Updated: 2026-11-10
The reference covers 641 codes from the factory tables of Mack, grouped by control module (MID).
A Mack code has three parts: the MID module number (for example 128 is the engine, 142 is the chassis and dash), the PID/SID parameter, and the FMI fault type. There are 641 codes by module, and on this page they are grouped by module. There is also a separate dealer table in OBD-II form, such as P0016, which is not linked to the MID or FMI.
| Code | Meaning |
|---|---|
| M128-P100.1 | Engine Oil Pressure |
| M128-P100.3 | Engine Oil Pressure |
| M128-P100.4 | Engine Oil Pressure |
| M128-P100.5 | Engine Oil Pressure |
| M128-P100.13 | Engine Oil Pressure – Out of Calibration |
| M128-P100.15 | Engine Oil Pressure |
| M128-P100.17 | Engine Oil Pressure |
| M128-P102.2 | Engine Intake Manifold 1 Pressure – Data Erratic, Intermittent, or Incorrect |
| M128-P102.3 | Boost Pressure |
| M128-P102.4 | Boost Pressure |
| M128-P102.5 | Engine Intake Manifold 1 Pressure |
| M128-P102.12 | Engine Intake Manifold 1 Pressure – Bad Intelligent Device or Component |
| M128-P102.13 | Engine Intake Manifold 1 Pressure – Out of Calibration |
| M128-P102.14 | Engine Intake Manifold 1 Pressure – Special Instructions |
| M128-P102.15 | Engine Intake Manifold 1 Pressure |
| M128-P102.17 | Engine Intake Manifold 1 Pressure |
| M128-P103.0 | Engine Turbocharger 1 Speed |
| M128-P103.1 | Engine Turbocharger 1 Speed |
| M128-P103.8 | Turbocharger Speed - Abnormal Freq., PW or T |
| M128-P103.9 | Engine Turbocharger 1 Speed – Abnormal Update Rate |
| M128-P103.15 | Engine Turbocharger 1 Speed |
| M128-P103.17 | Engine Turbocharger 1 Speed |
| M128-P105.0 | Engine Intake Manifold 1 Temperature |
| M128-P105.2 | Engine Intake Manifold 1 Temperature – Data Erratic, Intermittent, or Incorrect |
| M128-P105.3 | Intake Manifold Temp. |
| M128-P105.4 | Intake Manifold Temp. |
| M128-P105.5 | Intake Manifold Temp. |
| M128-P105.13 | Engine Intake Manifold 1 Temperature – Out of Calibration |
| M128-P105.17 | Engine Intake Manifold 1 Temperature |
| M128-P106.3 | Inlet Air Pressure |
| M128-P106.4 | Inlet Air Pressure |
| M128-P1072.1 | Engine Compression Brake Output #1 |
| M128-P1072.3 | Engine Compression Brake Output #1 |
| M128-P1072.4 | Engine Compression Brake Output #1 |
| M128-P1072.5 | Engine Compression Brake Output #1 |
| M128-P108.2 | Barometric Pressure – Data Erratic, Intermittent, or Incorrect |
| M128-P108.3 | Barometric Pressure |
| M128-P108.4 | Barometric Pressure |
| M128-P110.0 | Engine Coolant Temperature |
| M128-P110.2 | Engine Coolant Temperature – Data Erratic, Intermittent, or Incorrect |
| M128-P110.3 | Engine Coolant Temp. |
| M128-P110.4 | Engine Coolant Temp. |
| M128-P110.5 | Engine Coolant Temp. |
| M128-P110.10 | Engine Coolant Temp. - Abnormal Rate of Change |
| M128-P110.13 | Engine Coolant Temperature – Out of Calibration |
| M128-P110.16 | Engine Coolant Temperature |
| M128-P110.17 | Engine Coolant Temperature |
| M128-P111.1 | Engine Coolant Level |
| M128-P111.3 | Coolant Level |
| M128-P111.4 | Engine Coolant Level |
| M128-P111.5 | Coolant Level Add Sensor - High Voltage/Open |
| M128-P111.14 | Engine Coolant Level – Special Instructions |
| M128-P111.18 | Engine Coolant Level |
| M128-P1127.0 | Engine Turbocharger Intake Manifold Pressure (IMP) |
| M128-P1127.1 | Engine Turbocharger Intake Manifold Pressure (IMP) |
| M128-P1127.10 | Engine Turbocharger Intake Manifold Pressure (IMP) – Abnormal Rate of Change |
| M128-P1127.11 | Engine Turbocharger Intake Manifold Pressure (IMP) – Root Cause Not Known |
| M128-P1127.13 | Engine Turbocharger Intake Manifold Pressure (IMP) – Out of Calibration |
| M128-P1127.14 | Engine Turbocharger Intake Manifold Pressure (IMP) – Special Instructions |
| M128-P1127.16 | Engine Turbocharger Intake Manifold Pressure (IMP) |
| M128-P1127.18 | Engine Turbocharger Intake Manifold Pressure (IMP) |
| M128-P1136.4 | Engine Control Module (ECM) Temperature |
| M128-P1136.5 | Engine Control Module (ECM) Temperature |
| M128-P1198.2 | Anti-theft Random Number – Data Erratic, Intermittent, or Incorrect |
| M128-P1198.12 | Anti-theft Random Number – Bad Intelligent Device or Component |
| M128-P1231.2 | SAE J1939 Data Link 2 – Data Erratic, Intermittent, or Incorrect |
| M128-P1231.9 | SAE J1939 Data Link 2 – Abnormal Update Rate |
| M128-P1322.8 | Engine Misfire for Multiple Cylinders – Abnormal Frequency or Pulse Width or Period |
| M128-P1322.31 | Engine Misfire for Multiple Cylinders – Condition Exists |
| M128-P153.0 | Engine High Resolution Crankcase Pressure |
| M128-P153.2 | Engine High Resolution Crankcase Pressure – Data Erratic, Intermittent, or Incorrect |
| M128-P153.3 | Engine High Resolution Crankcase Pressure |
| M128-P153.5 | Engine High Resolution Crankcase Pressure |
| M128-P153.7 | Engine High Resolution Crankcase Pressure – Mechanical System Not Responding Properly or Out of Adjustment |
| M128-P153.13 | Engine High Resolution Crankcase Pressure – Out of Calibration |
| M128-P153.15 | Engine High Resolution Crankcase Pressure |
| M128-P153.17 | Engine High Resolution Crankcase Pressure |
| M128-P158.0 | Keyswitch Battery Potential |
| M128-P158.1 | Keyswitch Battery Potential |
| M128-P158.3 | Keyswitch Battery Potential |
| M128-P158.4 | Switched Voltage |
| M128-P158.16 | Keyswitch Battery Potential |
| M128-P158.18 | Keyswitch Battery Potential |
| M128-P1659.7 | Engine Coolant System Thermostat – Mechanical System Not Responding or Out of Adjustment |
| M128-P1659.12 | Engine Coolant System Thermostat – Bad Intelligent Device or Component |
| M128-P1677.0 | Aftertreatment DPF Auxiliary Heater Mode |
| M128-P1677.7 | Aftertreatment DPF Auxiliary Heater Mode – Mechanical System Not Responding or Out of Adjustment |
| M128-P1677.16 | Aftertreatment DPF Auxiliary Heater Mode |
| M128-P171.2 | Ambient Air Temperature – Data Erratic, Intermittent, or Incorrect |
| M128-P171.3 | Ambient Temperature |
| M128-P171.4 | Ambient Temperature |
| M128-P171.5 | Ambient Temperature |
| M128-P171.9 | Ambient Air Temperature – Abnormal Update Rate |
| M128-P171.10 | Ambient Air Temperature – Abnormal Rate of Change |
| M128-P171.12 | Ambient Air Temperature – Bad Intelligent Device or Component |
| M128-P171.13 | Ambient Air Temperature – Out of Calibration |
| M128-P171.14 | Ambient Air Temperature – Special Instructions |
| M128-P171.19 | Ambient Air Temperature – Received Network Data in Error |
| M128-P172.3 | Combustion Air Temperature |
| M128-P172.4 | Combustion Air Temperature |
| M128-P172.5 | Combustion Air Temperature |
| M128-P173.0 | Engine Exhaust Gas Temperature (EGT) |
| M128-P173.2 | Engine Exhaust Gas Temperature (EGT) – Data Erratic, Intermittent, or Incorrect |
| M128-P173.4 | Engine Exhaust Gas Temperature (EGT) |
| M128-P173.5 | Engine Exhaust Gas Temperature (EGT) |
| M128-P173.15 | Engine Exhaust Gas Temperature (EGT) |
| M128-P173.16 | Engine Exhaust Gas Temperature (EGT) |
| M128-P174.3 | Fuel Temperature |
| M128-P174.4 | Fuel Temperature |
| M128-P174.5 | Fuel Temperature |
| M128-P175.0 | Engine Oil Temperature 1 |
| M128-P175.2 | Engine Oil Temperature 1 – Data Erratic, Intermittent, or Incorrect |
| M128-P175.3 | Engine Oil Temperature |
| M128-P175.4 | Engine Oil Temperature |
| M128-P175.5 | Engine Oil Temperature |
| M128-P175.13 | Engine Oil Temperature 1 – Out of Calibration |
| M128-P175.16 | Engine Oil Temperature 1 |
| M128-P175.17 | Engine Oil Temperature 1 |
| M128-P1761.3 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Level |
| M128-P1761.5 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Level |
| M128-P1761.11 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Level – Root Cause Not Known |
| M128-P1761.14 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Level – Special Instructions |
| M128-P1761.18 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Level |
| M128-P177.0 | Transmission Oil Temperature |
| M128-P177.16 | Transmission Oil Temperature |
| M128-P188.0 | Engine Speed at Idle, Point 1 (Engine Configurations) |
| M128-P188.1 | Engine Speed at Idle, Point 1 (Engine Configurations) |
| M128-P190.0 | Engine Speed |
| M128-P190.2 | Redundant Engine Speed Mon. - Timing and position do not agree |
| M128-P2003.9 | Transmission Control Module (TCM) Status – Abnormal Update Rate |
| M128-P2017.9 | Cruise Control Status – Abnormal Update Rate |
| M128-P2029.8 | Invalid or Missing Data from Vehicle ECU – Abnormal Frequency or Pulse Width or Period |
| M128-P2029.9 | Invalid or Missing Data from Vehicle ECU – Abnormal Update Rate |
| M128-P228.9 | Speed Sensor Calibration – Abnormal Update Rate |
| M128-P228.11 | Speed Sensor Calibration – Failure Mode Not Identifiable |
| M128-P237.2 | Vehicle Identification Number – Data Erratic, Intermittent, or Incorrect |
| M128-P237.12 | Vehicle Identification Number – Bad Intelligent Device or Component |
| M128-P245.9 | Total Vehicle Distance – Abnormal Update Rate |
| M128-P251.2 | Time – Data Erratic, Intermittent, or Incorrect |
| M128-P251.9 | Time – Abnormal Update Rate |
| M128-P251.10 | Time – Abnormal Rate of Change |
| M128-P251.12 | Time – Bad Intelligent Device or Component |
| M128-P251.13 | Time – Out of Calibration |
| M128-P251.19 | Time – Received Network Data in Error |
| M128-P252.9 | Date – Abnormal Update Rate |
| M128-P26.0 | Estimated % Fan Speed |
| M128-P26.1 | Estimated % Fan Speed |
| M128-P2629.0 | Engine Turbocharger Compressor Outlet Temperature |
| M128-P2629.2 | Engine Turbocharger Compressor Outlet Temperature – Data Erratic, Intermittent, or Incorrect |
| M128-P2629.4 | Engine Turbocharger Compressor Outlet Temperature |
| M128-P2629.5 | Engine Turbocharger Compressor Outlet Temperature |
| M128-P2629.13 | Engine Turbocharger Compressor Outlet Temperature – Out of Calibration |
| M128-P2629.15 | Engine Turbocharger Compressor Outlet Temperature |
| M128-P2629.17 | Engine Turbocharger Compressor Outlet Temperature |
| M128-P2659.0 | Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate (J1587 ONLY) |
| M128-P2659.1 | Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate |
| M128-P2659.16 | Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate |
| M128-P2659.18 | Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate |
| M128-P2836.3 | Battery Potential / Switched Voltage |
| M128-P2836.4 | Battery Potential / Switched Voltage |
| M128-P3031.0 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Temperature |
| M128-P3031.4 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Temperature |
| M128-P3031.5 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Temperature |
| M128-P3031.8 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Temperature – Abnormal Frequency or Pulse Width or Period |
| M128-P3064.0 | Aftertreatment DPF System Monitor |
| M128-P3064.10 | Aftertreatment DPF System Monitor – Abnormal Rate of Change |
| M128-P3064.11 | Aftertreatment DPF System Monitor – Root Cause Not Known |
| M128-P3216.2 | Aftertreatment Intake NOx – Data Erratic, Intermittent, or Incorrect |
| M128-P3216.3 | Aftertreatment Intake NOx |
| M128-P3216.5 | Aftertreatment Intake NOx |
| M128-P3216.9 | Aftertreatment Intake NOx – Abnormal Update Rate |
| M128-P3216.11 | Aftertreatment Intake NOx – Root Cause Not Known |
| M128-P3216.12 | Aftertreatment Intake NOx – Bad Intelligent Device or Component |
| M128-P3216.13 | Aftertreatment Intake NOx – Out of Calibration |
| M128-P3216.14 | Aftertreatment Intake NOx – Special Instructions |
| M128-P3226.2 | Aftertreatment Outlet NOx – Data Erratic, Intermittent, or Incorrect |
| M128-P3226.3 | Aftertreatment Outlet NOx |
| M128-P3226.5 | Aftertreatment Outlet NOx |
| M128-P3226.9 | Aftertreatment Outlet NOx – Abnormal Update Rate |
| M128-P3226.11 | Aftertreatment Outlet NOx – Root Cause Not Known |
| M128-P3226.12 | Aftertreatment Outlet NOx – Bad Intelligent Device or Component |
| M128-P3226.13 | Aftertreatment Outlet NOx – Out of Calibration |
| M128-P3226.14 | Aftertreatment Outlet NOx – Special Instructions |
| M128-P3226.31 | Aftertreatment Outlet NOx – Condition Exists |
| M128-P3245.0 | Aftertreatment DPF Outlet Temperature |
| M128-P3245.2 | Aftertreatment DPF Outlet Temperature – Data Erratic, Intermittent, or Incorrect |
| M128-P3245.4 | Aftertreatment DPF Outlet Temperature |
| M128-P3245.5 | Aftertreatment DPF Outlet Temperature |
| M128-P3245.15 | Aftertreatment DPF Outlet Temperature |
| M128-P3249.2 | Aftertreatment DPF Intake Temperature – Data Erratic, Intermittent, or Incorrect |
| M128-P3249.4 | Aftertreatment DPF Intake Temperature |
| M128-P3249.5 | Aftertreatment DPF Intake Temperature |
| M128-P3249.15 | Aftertreatment DPF Intake Temperature |
| M128-P3250.1 | Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature |
| M128-P3250.2 | Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature – Data Erratic, Intermittent, or Incorrect |
| M128-P3250.3 | Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature |
| M128-P3250.5 | Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature |
| M128-P3250.9 | Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature – Abnormal Update Rate |
| M128-P3250.10 | Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature – Abnormal Rate of Change |
| M128-P3250.11 | Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature – Failure Mode Not Identifiable |
| M128-P3250.13 | Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature – Out of Calibration |
| M128-P3250.14 | Aftertreatment Diesel Particulate Filter (DPF) Intermediate Gas Temperature – Out of Calibration |
| M128-P3251.0 | Aftertreatment DPF Differential Pressure |
| M128-P3251.2 | Aftertreatment DPF Differential Pressure – Data Erratic, Intermittent, or Incorrect |
| M128-P3251.3 | Aftertreatment DPF Differential Pressure |
| M128-P3251.5 | Aftertreatment DPF Differential Pressure |
| M128-P3251.16 | Aftertreatment DPF Differential Pressure |
| M128-P3363.2 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Heater – Data Erratic, Intermittent, or Incorrect |
| M128-P3363.3 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Heater |
| M128-P3363.4 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Heater |
| M128-P3363.5 | Aftertreatment Diesel Exhaust Fluid (DEF) Tank Heater |
| M128-P3471.3 | Aftertreatment Fuel Pressure Control Actuator |
| M128-P3471.4 | Aftertreatment Fuel Pressure Control Actuator |
| M128-P3471.5 | Aftertreatment Fuel Pressure Control Actuator |
| M128-P3471.7 | Aftertreatment Fuel Pressure Control Actuator – Mechanical System Not Responding or Out of Adjustment |
| M128-P3471.12 | Aftertreatment Fuel Pressure Control Actuator – Bad Intelligent Device or Component |
| M128-P3471.14 | Aftertreatment Fuel Pressure Control Actuator – Special Instructions |
| M128-P3472.3 | Aftertreatment Diesel Particulate Filter (DPF) Air Pressure Control Actuator |
| M128-P3472.4 | Aftertreatment Diesel Particulate Filter (DPF) Air Pressure Control Actuator |
| M128-P3472.5 | Aftertreatment Diesel Particulate Filter (DPF) Air Pressure Control Actuator |
| M128-P3473.7 | Aftertreatment Failed to Ignite – Mechanical System Not Responding or Out of Adjustment |
| M128-P3473.14 | Aftertreatment Failed to Ignite – Special Instructions |
| M128-P3480.2 | Aftertreatment DPF Fuel Pressure – Data Erratic, Intermittent, or Incorrect |
| M128-P3480.3 | Aftertreatment DPF Fuel Pressure |
| M128-P3480.5 | Aftertreatment DPF Fuel Pressure |
| M128-P3480.7 | Aftertreatment DPF Fuel Pressure – Mechanical System Not Responding or Out of Adjustment |
| M128-P3480.10 | Aftertreatment DPF Fuel Pressure – Abnormal Rate of Change |
| M128-P3480.15 | Aftertreatment DPF Fuel Pressure |
| M128-P3482.3 | Aftertreatment Diesel Particulate Filter (DPF) Fuel Shutoff Valve |
| M128-P3482.4 | Aftertreatment Diesel Particulate Filter (DPF) Fuel Shutoff Valve |
| M128-P3482.5 | Aftertreatment Diesel Particulate Filter (DPF) Fuel Shutoff Valve |
| M128-P3482.7 | Aftertreatment Diesel Particulate Filter (DPF) Fuel Shutoff Valve – Mechanical System Not Responding or Out of Adjustment |
| M128-P3483.0 | Aftertreatment Regeneration Status |
| M128-P3483.1 | Aftertreatment Regeneration Status |
| M128-P3483.10 | Aftertreatment Regeneration Status – Abnormal Rate of Change |
| M128-P3483.12 | Aftertreatment Regeneration Status – Bad Intelligent Device or Component |
| M128-P3483.13 | Aftertreatment Regeneration Status – Out of Calibration |
| M128-P3483.15 | Aftertreatment Regeneration Status |
| M128-P3483.17 | Aftertreatment Regeneration Status |
| M128-P3483.31 | Aftertreatment Regeneration Status – Condition Exists |
| M128-P3484.0 | Aftertreatment Ignition |
| M128-P3484.1 | Aftertreatment Ignition |
| M128-P3484.2 | Aftertreatment Ignition – Data Erratic, Intermittent, or Incorrect |
| M128-P3484.3 | Aftertreatment Ignition |
| M128-P3484.4 | Aftertreatment Ignition |
| M128-P3484.5 | Aftertreatment Ignition |
| M128-P3485.2 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Pressure – Data Erratic, Intermittent, or Incorrect |
| M128-P3485.3 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Pressure |
| M128-P3485.5 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Pressure |
| M128-P3485.7 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Pressure – Mechanical System Not Responding or Out of Adjustment |
| M128-P3485.10 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Pressure – Abnormal Rate of Change |
| M128-P3485.14 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Pressure – Special Instructions |
| M128-P3489.2 | Aftertreatment Air Enable Actuator – Data Erratic, Intermittent, or Incorrect |
| M128-P3489.3 | Aftertreatment Air Enable Actuator |
| M128-P3489.4 | Aftertreatment Air Enable Actuator |
| M128-P3489.5 | Aftertreatment Air Enable Actuator |
| M128-P3491.3 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Actuator |
| M128-P3491.4 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Actuator |
| M128-P3491.5 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Actuator |
| M128-P3491.12 | Aftertreatment Diesel Particulate Filter (DPF) Atomization Air Actuator – Bad Intelligent Device or Component |
| M128-P3492.3 | Aftertreatment 1 Air System Relay |
| M128-P3492.4 | Aftertreatment 1 Air System Relay |
| M128-P3492.5 | Aftertreatment 1 Air System Relay |
| M128-P3511.3 | Sensor Supply Voltage 3 |
| M128-P3511.4 | Sensor Supply Voltage 3 |
| M128-P3512.3 | Sensor Supply Voltage 4 |
| M128-P3512.4 | Sensor Supply Voltage 4 |
| M128-P3522.0 | Aftertreatment Total Fuel Used |
| M128-P3522.1 | Aftertreatment Total Fuel Used |
| M128-P3522.16 | Aftertreatment Total Fuel Used |
| M128-P3522.18 | Aftertreatment Total Fuel Used |
| M128-P3556.3 | Aftertreatment Hydrocarbon Doser |
| M128-P3556.4 | Aftertreatment Hydrocarbon Doser |
| M128-P3556.5 | Aftertreatment Hydrocarbon Doser |
| M128-P3556.13 | Aftertreatment Hydrocarbon Doser – Out of Calibration |
| M128-P3556.14 | Aftertreatment Hydrocarbon Doser – Special Instructions |
| M128-P3597.3 | Aftertreatment Diesel Particulate Filter (DPF) Regeneration |
| M128-P3597.4 | Aftertreatment Diesel Particulate Filter (DPF) Regeneration |
| M128-P3597.5 | Aftertreatment Diesel Particulate Filter (DPF) Regeneration |
| M128-P3675.3 | Engine Turbocharger Compressor Bypass Valve Position |
| M128-P3675.4 | Engine Turbocharger Compressor Bypass Valve Position |
| M128-P3675.5 | Engine Turbocharger Compressor Bypass Valve Position |
| M128-P3675.7 | Engine Turbocharger Compressor Bypass Valve Position – Mechanical System Not Responding or Out of Adjustment |
| M128-P3695.9 | Aftertreatment Diesel Particulate Filter (DPF) Switch / MP8 Engine – Abnormal Update Rate |
| M128-P3720.0 | Aftertreatment DPF Ash Load Percent |
| M128-P3936.0 | Aftertreatment DPF System |
| M128-P3936.1 | Aftertreatment DPF System |
| M128-P4094.1 | NOx Limits Exceeded Due to Insufficient Diesel Exhaust Fluid (DEF) Quality |
| M128-P4094.14 | NOx Limits Exceeded Due to Insufficient Diesel Exhaust Fluid (DEF) Quality – Special Instructions |
| M128-P4094.18 | NOx Limits Exceeded Due to Insufficient Diesel Exhaust Fluid (DEF) Quality |
| M128-P4095.7 | NOx Limits Exceeded Due to Interrupted Diesel Exhaust Fluid (DEF) Dosing – Mechanical System Not Responding or Out of Adjustment |
| M128-P411.0 | Engine Exhaust Gas Recirculation Differential Pressure |
| M128-P411.1 | Engine Exhaust Gas Recirculation Differential Pressure |
| M128-P411.2 | Engine Exhaust Gas Recirculation Differential Pressure – Data Erratic, Intermittent, or Incorrect |
| M128-P411.3 | Engine Exhaust Gas Recirculation Differential Pressure |
| M128-P411.5 | Engine Exhaust Gas Recirculation Differential Pressure |
| M128-P411.7 | Engine Exhaust Gas Recirculation Differential Pressure – Mechanical System Not Responding or Out of Adjustment |
| M128-P412.0 | Engine Exhaust Gas Recirculation Temperature |
| M128-P412.2 | Engine Exhaust Gas Recirculation Temperature – Data Erratic, Intermittent, or Incorrect |
| M128-P412.4 | Engine Exhaust Gas Recirculation Temperature |
| M128-P412.5 | Engine Exhaust Gas Recirculation Temperature |
| M128-P412.13 | Engine Exhaust Gas Recirculation Temperature – Out of Calibration (Above Range) |
| M128-P412.15 | Engine Exhaust Gas Recirculation Temperature |
| M128-P412.16 | Engine Exhaust Gas Recirculation Temperature |
| M128-P412.17 | Engine Exhaust Gas Recirculation Temperature |
| M128-P4334.1 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Absolute Pressure |
| M128-P4334.4 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Absolute Pressure |
| M128-P4334.5 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Absolute Pressure |
| M128-P4339.0 | Aftertreatment SCR Feedback Control Status |
| M128-P4339.1 | Aftertreatment SCR Feedback Control Status |
| M128-P4339.10 | Aftertreatment SCR Feedback Control Status – Abnormal Rate of Change |
| M128-P4339.12 | Aftertreatment SCR Feedback Control Status – Bad Intelligent Device or Component |
| M128-P4354.3 | Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 1 |
| M128-P4354.4 | Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 1 |
| M128-P4354.5 | Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 1 |
| M128-P4356.3 | Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 3 |
| M128-P4356.4 | Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 3 |
| M128-P4356.5 | Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 3 |
| M128-P4374.1 | Aftertreatment Diesel Exhaust Fluid (DEF) Pump Motor Speed |
| M128-P4375.0 | Aftertreatment Diesel Exhaust Fluid Pump (DEF) Drive Percentage |
| M128-P4375.1 | Aftertreatment Diesel Exhaust Fluid Pump (DEF) Drive Percentage |
| M128-P4375.3 | Aftertreatment Diesel Exhaust Fluid Pump (DEF) Drive Percentage |
| M128-P4375.4 | Aftertreatment Diesel Exhaust Fluid Pump (DEF) Drive Percentage |
| M128-P4375.5 | Aftertreatment Diesel Exhaust Fluid Pump (DEF) Drive Percentage |
| M128-P4375.12 | Aftertreatment Diesel Exhaust Fluid Pump (DEF) Drive Percentage – Bad Intelligent Device or Component |
| M128-P4375.14 | Aftertreatment Diesel Exhaust Fluid Pump (DEF) Drive Percentage – Special Instructions |
| M128-P4376.3 | Aftertreatment Diesel Exhaust Fluid (DEF) Return Valve |
| M128-P4376.4 | Aftertreatment Diesel Exhaust Fluid (DEF) Return Valve |
| M128-P4376.5 | Aftertreatment Diesel Exhaust Fluid (DEF) Return Valve |
| M128-P4376.7 | Aftertreatment Diesel Exhaust Fluid (DEF) Return Valve – Mechanical System Not Responding or Out of Adjustment |
| M128-P439.3 | Boost Pressure Extended |
| M128-P439.4 | Boost Pressure Extended |
| M128-P4811.1 | Engine Piston Cooling Oil Pressure |
| M128-P4811.3 | Engine Piston Cooling Oil Pressure |
| M128-P4811.5 | Engine Piston Cooling Oil Pressure |
| M128-P4813.3 | Engine Oil Thermostat Bypass Valve Opening |
| M128-P4813.4 | Engine Oil Thermostat Bypass Valve Opening |
| M128-P4813.5 | Engine Oil Thermostat Bypass Valve Opening |
| M128-P4815.3 | Engine Cooling Fan Thermal Switch Position |
| M128-P4815.4 | Engine Cooling Fan Thermal Switch Position |
| M128-P4815.5 | Engine Cooling Fan Thermal Switch Position |
| M128-P5246.0 | Aftertreatment SCR Operator Inducement Severity |
| M128-P5246.15 | Aftertreatment SCR Operator Inducement Severity |
| M128-P5246.16 | Aftertreatment SCR Operator Inducement Severity |
| M128-P5285.7 | Charge Air Cooler (CAC) Temperature – Mechanical System Not Responding Properly |
| M128-P5285.18 | Charge Air Cooler (CAC) Temperature |
| M128-P5298.2 | Aftertreatment Diesel Oxidation Catalyst (DOC) Conversion Efficiency – Data Erratic, Intermittent, or Incorrect |
| M128-P5298.7 | Aftertreatment Diesel Oxidation Catalyst (DOC) Conversion Efficiency – Mechanical System Not Responding Properly |
| M128-P5298.18 | Aftertreatment Diesel Oxidation Catalyst (DOC) Conversion Efficiency |
| M128-P5392.7 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve Loss of Prime – Mechanical System Not Responding Properly |
| M128-P5392.31 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve Loss of Prime – Condition Exists |
| M128-P5394.0 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve |
| M128-P5394.1 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve |
| M128-P5394.3 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve |
| M128-P5394.4 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve |
| M128-P5394.5 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve |
| M128-P5394.14 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve – Special Instructions |
| M128-P5394.17 | Aftertreatment Diesel Exhaust Fluid (DEF) Dosing Valve |
| M128-P5443.2 | Aftertreatment 1 Hydrocarbon Dosing System – Fuel Pressure Fault |
| M128-P5443.7 | Aftertreatment 1 Hydrocarbon Dosing System – Mechanical System Not Responding Properly |
| M128-P5443.8 | Aftertreatment 1 Hydrocarbon Dosing System – Fuel Leakage |
| M128-P5443.10 | Aftertreatment 1 Hydrocarbon Dosing System – Abnormally Large Variations |
| M128-P5443.13 | Aftertreatment 1 Hydrocarbon Dosing System – Calibration Value Out of Range |
| M128-P5485.11 | Aftertreatment Diesel Exhaust Fluid (DEF) Pump Orifice – Root Cause Not Known |
| M128-P626.3 | Intake Air Heater (IAH) Relay |
| M128-P626.4 | Intake Air Heater (IAH) Relay |
| M128-P626.5 | Intake Air Heater (IAH) Relay |
| M128-P631.3 | Calibration Module |
| M128-P631.8 | Calibration Module – Abnormal Frequency or Pulse Width or Period |
| M128-P642.0 | Engine Variable Geometry Turbocharger (VGT) Actuator 2 |
| M128-P642.16 | Engine Variable Geometry Turbocharger (VGT) Actuator 2 |
| M128-P84.9 | Wheel-Based Vehicle Speed – Abnormal Update Rate |
| M128-P84.10 | Wheel-Based Vehicle Speed – Abnormal Rate of Change |
| M128-P84.13 | Wheel-Based Vehicle Speed – Out of Calibration |
| M128-P84.19 | Wheel-Based Vehicle Speed – Received Network Data in Error |
| M128-P91.9 | Accelerator Pedal Position 1 – Abnormal Rate of Change |
| M128-P91.10 | Accelerator Pedal Position 1 – Abnormal Rate of Change |
| M128-P91.13 | Accelerator Pedal Position 1 – Out of Calibration |
| M128-P91.19 | Accelerator Pedal Position 1 – Received Network Data in Error |
| M128-P94.3 | Engine Fuel Delivery Pressure |
| M128-P94.5 | Engine Fuel Delivery Pressure |
| M128-P94.7 | Engine Fuel Delivery Pressure – Mechanical System Not Responding Properly |
| M128-P94.13 | Engine Fuel Delivery Pressure – Out of Calibration |
| M128-P94.15 | Engine Fuel Delivery Pressure |
| M128-P94.17 | Engine Fuel Delivery Pressure |
| M128-P94.18 | Engine Fuel Delivery Pressure |
| M128-P97.0 | Water-In-Fuel Indicator |
| M128-P97.3 | Water-In-Fuel Indicator |
| M128-P97.4 | Water-In-Fuel Indicator |
| M128-P975.3 | Estimated Percent Fan Speed |
| M128-P98.3 | Engine Oil Level |
| M128-P98.4 | Engine Oil Level |
| M128-P98.5 | Engine Oil Level |
| M128-P98.18 | Engine Oil Level |
| M128-S1.2 | Injector #1 - Data Erratic |
| M128-S1.3 | Injector #1 |
| M128-S1.4 | Injector #1 |
| M128-S1.5 | Engine Injector Cylinder 1 |
| M128-S1.7 | Engine Injector Cylinder 1 – Mechanical System Not Responding Properly |
| M128-S1.8 | Injector #1 - Abnormal Freq., PW or T |
| M128-S1.13 | Engine Injector Cylinder 1 – Out of Calibration |
| M128-S1.31 | Engine Injector Cylinder 1 – Condition Exists |
| M128-S146.3 | Engine Exhaust Gas Recirculation (EGR) Valve Control |
| M128-S146.5 | Engine Exhaust Gas Recirculation (EGR) Valve Control |
| M128-S147.7 | VGT Position Sensor - Mech. System Not Resp. |
| M128-S151.3 | System Diagnostic - Solenoid Boost Voltage |
| M128-S151.4 | System Diagnostic - Solenoid Boost Voltage |
| M128-S18.3 | Engine Fuel Actuator 1 Control Command |
| M128-S18.4 | Engine Fuel Actuator 1 Control Command |
| M128-S18.5 | Engine Fuel Actuator 1 Control Command |
| M128-S2.2 | Injector #2 - Data Erratic |
| M128-S2.3 | Injector #2 |
| M128-S2.4 | Injector #2 |
| M128-S2.5 | Engine Injector Cylinder 2 |
| M128-S2.7 | Engine Injector Cylinder 2 – Mechanical System Not Responding Properly |
| M128-S2.8 | Injector #2 - Abnormal Freq., PW or T |
| M128-S2.13 | Engine Injector Cylinder 2 – Out of Calibration |
| M128-S2.31 | Engine Injector Cylinder 2 – Condition Exists |
| M128-S21.2 | Engine Position Sensor - Data Erratic/Incorrect |
| M128-S21.3 | Camshaft Position Sensor (CMP) |
| M128-S21.8 | Engine Position Sensor - Abnormal Freq., PW or T |
| M128-S211.3 | Sensor Supply Voltage 2 |
| M128-S211.4 | Sensor Supply Voltage 2 |
| M128-S22.2 | Engine Timing Sensor - Data Erratic/Incorrect |
| M128-S22.3 | Crankshaft Position Sensor (CKP) |
| M128-S22.8 | Engine Timing Sensor - Abnormal Freq., PW or T |
| M128-S230.3 | Accelerator Pedal 1 Idle Validation Switch |
| M128-S230.5 | Accelerator Pedal 1 Idle Validation Switch |
| M128-S231.2 | SAE J1939 Data Link 1 – Data Erratic, Intermittent, or Incorrect |
| M128-S231.8 | J1939 Link - Abnormal Freq., PW or T |
| M128-S232.3 | Sensor Supply Voltage 1 |
| M128-S232.4 | Sensor Supply Voltage 1 |
| M128-S233.12 | Fuel Control Module - Failed Device |
| M128-S236.2 | Power Relay - Data Erratic/Incorrect |
| M128-S240.2 | Program Memory – Data Erratic, Intermittent, or Incorrect |
| M128-S240.11 | Program Memory – Root Cause Not Known |
| M128-S240.12 | Program Memory – Bad Intelligent Device or Component |
| M128-S240.14 | Program Memory – Special Instructions |
| M128-S250.8 | J1708/J1587 Link - Abnormal Freq., PW or T |
| M128-S253.2 | Calibration Memory – Data Erratic, Intermittent, or Incorrect |
| M128-S253.12 | Calibration Memory – Bad Intelligent Device or Component |
| M128-S253.14 | Calibration Memory – Special Instructions |
| M128-S254.4 | Power reset without key switch |
| M128-S254.8 | All VECU Communications Lost - engine shutdown |
| M128-S254.12 | Electronic Control Unit (ECU) 1 – Bad Intelligent Device or Component |
| M128-S26.3 | Aux. Output Device Driver |
| M128-S26.4 | Aux. Output Device Driver |
| M128-S27.0 | Engine Variable Geometry Turbocharger (VGT) Actuator 1 |
| M128-S27.2 | Engine Variable Geometry Turbocharger (VGT) Actuator 1 – Data Erratic, Intermittent, or Incorrect |
| M128-S27.3 | Fan Clutch Output |
| M128-S27.4 | Fan Clutch Output |
| M128-S27.7 | Engine Variable Geometry Turbocharger (VGT) Actuator 1 – Mechanical System Not Responding or Out of Adjustment |
| M128-S27.9 | Engine Variable Geometry Turbocharger (VGT) Actuator 1 – Abnormal Update Rate |
| M128-S27.13 | Engine Variable Geometry Turbocharger (VGT) Actuator 1 – Out of Calibration |
| M128-S282.7 | Engine Exhaust Gas Recirculation (EGR) Cooler Efficiency – Mechanical System Not Responding or Out of Adjustment |
| M128-S3.2 | Injector #3 - Data Erratic |
| M128-S3.3 | Injector #3 |
| M128-S3.4 | Injector #3 |
| M128-S3.5 | Engine Injector Cylinder 3 |
| M128-S3.7 | Engine Injector Cylinder 3 – Mechanical System Not Responding Properly |
| M128-S3.8 | Injector #3 - Abnormal Freq., PW or T |
| M128-S3.13 | Engine Injector Cylinder 3 – Out of Calibration |
| M128-S3.31 | Engine Injector Cylinder 3 – Condition Exists |
| M128-S32.2 | Wastegate Output - Data Erratic |
| M128-S32.5 | Wastegate Output |
| M128-S32.7 | Wastegate Output - Mech. System Not Resp. |
| M128-S33.2 | Fan Clutch Output - Data Erratic |
| M128-S33.3 | Engine Fan Clutch Output Device Driver |
| M128-S33.4 | Engine Fan Clutch Output Device Driver |
| M128-S33.5 | Fan Clutch Output |
| M128-S39.0 | Engine Starter Mode |
| M128-S39.3 | Engine Starter Motor Relay |
| M128-S39.5 | Engine Starter Motor Relay |
| M128-S39.7 | Engine Starter Mode – Mechanical System Not Responding or Out of Adjustment |
| M128-S39.10 | Engine Starter Mode – Abnormal Rate of Change |
| M128-S39.14 | Engine Starter Mode – Special Instructions |
| M128-S4.2 | Injector #4 - Data Erratic |
| M128-S4.3 | Injector #4 |
| M128-S4.4 | Injector #4 |
| M128-S4.5 | Engine Injector Cylinder 4 |
| M128-S4.7 | Engine Injector Cylinder 4 – Mechanical System Not Responding Properly |
| M128-S4.8 | Injector #4 - Abnormal Freq., PW or T |
| M128-S4.13 | Engine Injector Cylinder 4 – Out of Calibration |
| M128-S4.31 | Engine Injector Cylinder 4 – Condition Exists |
| M128-S5.2 | Injector #5 - Data Erratic |
| M128-S5.3 | Injector #5 |
| M128-S5.4 | Injector #5 |
| M128-S5.5 | Engine Injector Cylinder 5 |
| M128-S5.7 | Engine Injector Cylinder 5 – Mechanical System Not Responding Properly |
| M128-S5.8 | Injector #5 - Abnormal Freq., PW or T |
| M128-S5.13 | Engine Injector Cylinder 5 – Out of Calibration |
| M128-S5.31 | Engine Injector Cylinder 5 – Condition Exists |
| M128-S6.2 | Injector #6 - Data Erratic |
| M128-S6.3 | Injector #6 |
| M128-S6.4 | Injector #6 |
| M128-S6.5 | Engine Injector Cylinder 6 |
| M128-S6.7 | Engine Injector Cylinder 6 – Mechanical System Not Responding Properly |
| M128-S6.8 | Injector #6 - Abnormal Freq., PW or T |
| M128-S6.13 | Engine Injector Cylinder 6 – Out of Calibration |
| M128-S6.31 | Engine Injector Cylinder 6 – Condition Exists |
| M128-S70.3 | Intake Air Heater (IAH) 1 |
| M128-S70.4 | Intake Air Heater (IAH) 1 |
| M128-S70.5 | Intake Air Heater (IAH) 1 |
| M128-S71.3 | Intake Air Heater (IAH) 2 |
| M128-S71.4 | Intake Air Heater (IAH) 2 |
| M128-S71.5 | Intake Air Heater (IAH) 2 |
| M128-S79.4 | Engine Brake Output #1 |
| M128-S79.5 | Engine Brake Output #1 - High Voltage/Open |
| M128-S80.4 | Engine Brake Output #2 |
| M128-S80.5 | Engine Brake Output #2 - High Voltage/Open |
| M128-S81.3 | Exhaust Brake Output |
| M128-S81.4 | Exhaust Brake Output |
| M128-S85.3 | Engine Piston Cooling Oil Pressure Actuator |
| M128-S85.4 | Engine Piston Cooling Oil Pressure Actuator |
| M128-S85.5 | Engine Piston Cooling Oil Pressure Actuator |
| Code | Meaning |
|---|---|
| M142-P100.1 | Engine Oil Pressure - Engine Oil Press. Low |
| M142-P110.0 | Engine Coolant Temp. - Engine Coolant Temp. Hi |
| M142-P167.0 | Alternator Voltage - High Voltage |
| M142-P167.1 | Alternator Voltage - Low Voltage |
| M142-P168.1 | Battery Voltage - Low Voltage |
| M142-P170.3 | Cab Interior Temperature |
| M142-P170.4 | Cab Interior Temperature |
| M142-P173.0 | Exhaust Temperature - Exhaust Temperature High |
| M142-P173.3 | Exhaust Temperature |
| M142-P173.4 | Exhaust Temperature |
| M142-P177.0 | Transmission Oil Temperature - Oil Temperature High |
| M142-P177.3 | Transmission Oil Temp. |
| M142-P177.4 | Transmission Oil Temp. |
| M142-P190.0 | Engine Speed - Engine Speed High |
| M142-P77.3 | F.R. Axle Oil Temperature |
| M142-P77.4 | F.R. Axle Oil Temperature |
| M142-P78.3 | R.R. Axle Oil Temperature |
| M142-P78.4 | R.R. Axle Oil Temperature |
| M142-P84.0 | Vehicle Speed - Vehicle Speed High |
| M142-P84.1 | Vehicle Speed |
| M142-P84.2 | Vehicle Speed - Data Invalid |
| M142-P84.3 | Vehicle Speed |
| M142-P84.4 | Vehicle Speed |
| M142-P84.5 | Vehicle Speed |
| M142-P84.8 | Vehicle Speed - Abnormal Freq., PW or T |
| M142-P84.11 | Vehicle Speed - Mode Not Identifiable |
| M142-P91.2 | Cummins Accel Pedal Position - Accel Pedal Invalid |
| M142-P91.3 | Accel. Pedal Position |
| M142-P91.4 | Accel. Pedal Position |
| M142-P91.7 | Cummins Idle Validation Switch - switch says idle, pedal not idle |
| M142-P91.14 | Cummins Idle Validation Switch - switch says not idle, pedal idle |
| M142-P96.3 | Fuel Level |
| M142-P96.4 | Fuel Level |
| M142-S10.3 | Aux. Output #1 |
| M142-S10.4 | Aux. Output #1 |
| M142-S11.3 | Aux. Output #2 |
| M142-S11.4 | Aux. Output #2 |
| M142-S12.3 | Spare Relay 3 |
| M142-S12.4 | Spare Relay 3 |
| M142-S151.0 | CDS (Cust Def Stat) Fault |
| M142-S151.1 | CDS (Cust Def Stat) Fault |
| M142-S151.8 | CDS (Cust Def Stat) Fault - Abnormal Freq., PW or T |
| M142-S152.7 | Transmission Splitter Position - Mech. System Not Resp. |
| M142-S152.8 | Transmission Splitter Position - Abnormal Freq., PW or T |
| M142-S216.12 | Possible J1939 Link - Other ECU failure Affecting Operation |
| M142-S224.3 | Driver Alarm |
| M142-S224.4 | Driver Alarm |
| M142-S231.8 | J1939 Link - Abnormal Freq., PW or T |
| M142-S231.14 | J1939 Link - Lost Contact with Tranny |
| M142-S232.3 | Vref Out of Range |
| M142-S232.4 | Vref Out of Range |
| M142-S235.3 | Parking Brake |
| M142-S237.3 | Starter Input |
| M142-S238.3 | Shutdown Lamp |
| M142-S238.4 | Shutdown Lamp |
| M142-S239.3 | Fault Lamp |
| M142-S239.4 | Fault Lamp |
| M142-S242.3 | Spd Cntl Resume Switch |
| M142-S243.3 | Spd Cntl Set Switch |
| M142-S246.4 | Service Brake |
| M142-S250.8 | J1708/J1587 Link - Abnormal Freq., PW or T |
| M142-S254.4 | Power reset without key switch |
| M142-S254.12 | Exhaust Temp Reference - Failed Device |
| M142-S254.14 | Transport Protocol - Table programming failure |
| M142-S6.3 | Tachometer Output |
| M142-S6.4 | Tachometer Output |
| M142-S7.3 | Speedometer Output |
| M142-S7.4 | Speedometer Output |
| Code | Meaning |
|---|---|
| M143-P100.3 | Engine Oil Pressure |
| M143-P100.4 | Engine Oil Pressure |
| M143-P102.3 | Boost Pressure |
| M143-P102.4 | Boost Pressure |
| M143-P105.3 | Intake Manifold Temp. |
| M143-P105.4 | Intake Manifold Temp. |
| M143-P105.5 | Intake Manifold Temp. |
| M143-P106.3 | Inlet Air Pressure |
| M143-P106.4 | Inlet Air Pressure |
| M143-P110.3 | Engine Coolant Temp. |
| M143-P110.4 | Engine Coolant Temp. |
| M143-P110.5 | Engine Coolant Temp. |
| M143-P111.3 | Coolant Level |
| M143-P158.4 | Switched Voltage |
| M143-P174.3 | Fuel Temperature |
| M143-P174.4 | Fuel Temperature |
| M143-P174.5 | Fuel Temperature |
| M143-P98.3 | Engine Oil Level |
| M143-P98.4 | Engine Oil Level |
| M143-S1.2 | Injector #1 - Data Erratic |
| M143-S1.3 | Injector #1 |
| M143-S1.4 | Injector #1 |
| M143-S1.8 | Injector #1 - Abnormal Freq., PW or T |
| M143-S2.2 | Injector #2 - Data Erratic |
| M143-S2.3 | Injector #2 |
| M143-S2.4 | Injector #2 |
| M143-S2.8 | Injector #2 - Abnormal Freq., PW or T |
| M143-S21.2 | Engine Position Sensor - Data Erratic/Incorrect |
| M143-S21.8 | Engine Position Sensor - Abnormal Freq., PW or T |
| M143-S22.2 | Engine Timing Sensor - Data Erratic/Incorrect |
| M143-S22.8 | Engine Timing Sensor - Abnormal Freq., PW or T |
| M143-S231.8 | J1939 Link - Abnormal Freq., PW or T |
| M143-S233.12 | Fuel Control Module - Failed Device |
| M143-S236.2 | Power Relay - Data Erratic/Incorrect |
| M143-S250.8 | J1708/J1587 Link - Abnormal Freq., PW or T |
| M143-S26.3 | Aux. Output Device Driver |
| M143-S26.4 | Aux. Output Device Driver |
| M143-S27.3 | Fan Clutch Output |
| M143-S27.4 | Fan Clutch Output |
| M143-S3.2 | Injector #3 - Data Erratic |
| M143-S3.3 | Injector #3 |
| M143-S3.4 | Injector #3 |
| M143-S3.8 | Injector #3 - Abnormal Freq., PW or T |
| M143-S30.3 | Exhaust Brake Output |
| M143-S30.4 | Exhaust Brake Output |
| M143-S33.2 | Fan Clutch Output - Data Erratic |
| M143-S4.2 | Injector #4 - Data Erratic |
| M143-S4.3 | Injector #4 |
| M143-S4.4 | Injector #4 |
| M143-S4.8 | Injector #4 - Abnormal Freq., PW or T |
| M143-S5.2 | Injector #5 - Data Erratic |
| M143-S5.3 | Injector #5 |
| M143-S5.4 | Injector #5 |
| M143-S5.8 | Injector #5 - Abnormal Freq., PW or T |
| M143-S6.2 | Injector #6 - Data Erratic |
| M143-S6.3 | Injector #6 |
| M143-S6.4 | Injector #6 |
| M143-S6.8 | Injector #6 - Abnormal Freq., PW or T |
A code has three parts: MID is which control unit reported it, PID/SID is which parameter or component is at fault, FMI is the type of fault (short circuit, open circuit, value out of range). On the scanner the code usually shows as MID-PID/SID-FMI, e.g. MID128 PID100 FMI4.
Know the code number? Type it into the search — or paste the whole list from the scanner and we will show which fault is the real one.