Factory Codes SPN 520509, 520513, 520514, 520515, 520516 by Make
Updated: 2026-11-13
What these codes are
SPN 520509, 520513, 520514, 520515 and 520516 are manufacturer numbers outside the standard J1939 table, so the same number means different things on different makes. For these five, three makes use each number: International, Meritor (ex-WABCO) and SITRAK (SPN 520516 has Meritor and SITRAK rows only). The same five SPNs belong to a wider block of numbers that carry the same three kinds of fault, so a neighbouring code such as 520510 or 520512 follows the same pattern. First find your make in the table, then read the line for your SPN.
- International: faults on channels of the RPM 4 module (overcurrent on an analog input, or a cab switch error).
- Meritor (ex-WABCO): wheel speed faults at an additional axle: permanent slip, jump down, impermissible tyre size.
- SITRAK: emissions and driver inducement faults: an EGR valve, or the DEF (urea) system. These can limit torque.
SPN by make
| SPN | International | Meritor (ex-WABCO) | SITRAK |
|---|---|---|---|
| 520509 | RPM 4 Channel 3 Overcurrent (FMI 6, 14, 19) | Wheel speed faults at axle 5 left (FMI 7, 9, 13, 14) | FMI 2: EGR valve blocked, driver inducement level 3 (P1069). Torque may be limited. |
| 520513 | RPM 4 Channel 5 Overcurrent (FMI 6, 14, 19) | Wheel speed faults at axle 7 left (FMI 7, 9, 13, 14) | FMI 2: DEF dosing interrupted, driver inducement warning (P106D). Torque limited, MIL on, power may drop to 60%. |
| 520514 | RPM 4 Channel 6 Cab Switch, switch error (FMI 2) | Wheel speed faults at axle 7 right (FMI 7, 9, 13, 14) | FMI 2: driver inducement override activated (P106E). Torque may be limited. |
| 520515 | RPM 4 Channel 6 Overcurrent (FMI 6, 14, 19) | Wheel speed faults at axle 8 left (FMI 7, 9, 13, 14) | FMI 2: low DEF tank level, driver inducement warning (P1070). Torque limited, MIL on, power may drop to 60%. |
| 520516 | no International row | Wheel speed faults at axle 8 right (FMI 7, 9, 13, 14) | FMI 2: DEF consumption deviation too large, driver inducement level 1 (P1071). Torque limited, MIL on, power may drop to 60%. |
FMI and what they mean
| FMI | J1939 meaning | Wording on these codes |
|---|---|---|
| 2 | Data erratic or intermittent | International cab switch error; every SITRAK line here is FMI 2. |
| 6 | Current above normal or grounded circuit | International: RPM 4 channel overcurrent. |
| 7 | Mechanical system not responding | Meritor: wheel speed permanent slip failure. |
| 9 | Abnormal update rate | Meritor: wheel speed jump down detection. |
| 13 | Calibration out of range | Meritor: impermissible tyre size detected. |
| 14 | Manufacturer-specific instructions | Meritor: impermissible deviation of tyre size detected. International: analog input data unavailable. |
| 19 | Error in received network data | International: analog input invalid data. |
How to read your code
- Identify the make. The same SPN, for example 520513, is an RPM 4 channel overcurrent on International, a wheel speed fault at axle 7 on Meritor and a DEF dosing fault on SITRAK.
- International: the number tells you which RPM 4 channel is involved (3, 5 or 6 here). The overcurrent lines come as FMI 6, with FMI 14 and 19 for the related analog input data lines.
- Meritor: the number gives the axle and side. SPN 520509 is axle 5 left, 520513 axle 7 left, 520514 axle 7 right, 520515 axle 8 left and 520516 axle 8 right. All four FMI (7, 9, 13, 14) are listed for each.
- SITRAK: each line carries a scan tool code (P1069, P106D, P106E, P1070, P1071) and a stated effect. Read the effect before deciding what to do.
No step-by-step repair is given for these codes, only the wording above. For the International and Meritor lines, the fault is described as electrical: an open, a short or a bad contact in the circuit, where the value being measured is most likely fine.
Can I keep driving?
The verdict differs by code, and the SITRAK effects are stricter than the general verdict text, so read both.
- SPN 520509, 520513, 520515: safe to drive, but watch it yourself. This is an electrical fault: an open, a short or a bad contact in the circuit, and the value it measures is most likely fine. You can drive, but until the circuit is repaired the system runs blind and cannot warn you about a real failure.
- SPN 520514, 520516: safe to drive until the next service. This is a standalone fault with no immediate consequences for driving. Show the codes at the next service, and if a second code from the same system appears, stop putting it off.
- SITRAK lines: the SITRAK text itself says torque may be limited, and on SPN 520513, 520515 and 520516 it says torque is limited, the MIL is on and power may drop to 60 percent. Plan the trip around that, and do not read the general verdict above as "no effect".
FAQ
Why does SPN 520513 have three different meanings?
It is a manufacturer number outside the standard J1939 table, so each make uses it for its own fault: International for an RPM 4 channel 5 overcurrent, Meritor for a wheel speed fault at axle 7 left, SITRAK for a DEF dosing interruption.
Which wheel is SPN 520514 on a Meritor system?
Axle 7, right side. The same system lists SPN 520513 as axle 7 left, and SPN 520515 and 520516 as axle 8 left and right.
What does power may drop to 60% mean on a SITRAK code?
It is the effect stated on the SITRAK lines for SPN 520513, 520515 and 520516: torque limited, MIL on, and power may drop to 60 percent.
What is the P106E on SPN 520514?
It is the scan tool code the SITRAK line gives for driver inducement override activated. The stated effect is that torque may be limited.
Is SPN 520516 on International trucks?
Only Meritor (ex-WABCO) and SITRAK are listed for SPN 520516. There is no International row.
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