| Source document | Controller | Fault pairs |
|---|---|---|
| MM0112 ABS/ESC E-version maintenance manual (05.2020) | ABS/ESC | 113 |
| MM1719 mBSP ABS/ESC maintenance manual (08.2018) | ABS/ESC | 448 |
| System | Fault pairs |
|---|---|
| Brakes/ABS | 437 |
| Electrical | 105 |
| Engine | 10 |
| Network | 8 |
| Instrument | 1 |
| Fault family | Fault pairs |
|---|---|
| Wheel-Speed Signal Erratic / Implausible | 141 |
| ECU EEPROM Parameter Group Checksum Fault | 72 |
| Wheel-Speed Sensor Circuit Fault | 61 |
| Configurable Auxiliary Output Solenoid Circuit | 46 |
| ESC Internal Safety-Monitor Cross-Check Fault | 43 |
| ABS Pressure Modulator Valve Solenoid | 34 |
| Yaw Rate / Lateral / Longitudinal Accelerometer Sensor | 27 |
| Wheel-Speed Sensor Air Gap / Wheel-End | 23 |
| Steering Angle Sensor (SAS) Circuit | 18 |
| ABS Modulator Valve Thermal Protection | 14 |
| FMI | Meaning | Fault pairs |
|---|---|---|
| 0 | Reading in-range but far too high | 15 |
| 1 | Reading in-range but far too low | 19 |
| 2 | Signal unstable, intermittent or implausible | 37 |
| 3 | Circuit voltage high / short to supply | 45 |
| 4 | Circuit voltage low / short to ground | 41 |
| 5 | Current too low; open circuit | 40 |
| 6 | Current too high; short to ground | 20 |
| 7 | Mechanical part not reacting or misadjusted | 38 |
| 8 | Wrong frequency, pulse width or period | 20 |
| 9 | Message not arriving at expected rate | 32 |
| 10 | Value changing implausibly fast or slow | 28 |
| 11 | Fault detected, cause undetermined | 17 |
| 12 | Smart device or component defective | 22 |
| 13 | Calibration data outside limits | 53 |
| 14 | See manufacturer-specific instructions | 34 |
| 15 | Slightly above normal range | 10 |
| 16 | Moderately above normal range | 2 |
| 17 | Slightly below normal range | 5 |
| 18 | Moderately below normal range | 4 |
| 19 | Network-received value flagged as error | 6 |
| 20 | Value has drifted upward over time | 3 |
| 21 | Value has drifted downward over time | 2 |
| 22 | Reserved by SAE; some OEMs assign proprietary meanings | 23 |
| 23 | Reserved by SAE; some OEMs assign proprietary meanings | 8 |
| 24 | Reserved by SAE; some OEMs assign proprietary meanings | 5 |
| 25 | Reserved by SAE; some OEMs assign proprietary meanings | 4 |
| 26 | Reserved by SAE; some OEMs assign proprietary meanings | 4 |
| 27 | Reserved by SAE; some OEMs assign proprietary meanings | 4 |
| 28 | Reserved by SAE; some OEMs assign proprietary meanings | 4 |
| 29 | Reserved by SAE; some OEMs assign proprietary meanings | 4 |
| 30 | Reserved by SAE; some OEMs assign proprietary meanings | 4 |
| 31 | Fault present; no further detail | 8 |
106 distinct SPNs appear in these pairs. 273 of the 561 pairs use SPNs that WABCO assigns itself (516,096 and above), named from its own documents; the rest use standard SPNs whose meaning is the same on every make.
Rows for this OEM from the free sample. The dataset adds the ordered procedures for every pair, with cost and labour estimates where known and a part name where one is mapped.
| SPN | FMI | OEM code | Description | Fault family |
|---|---|---|---|---|
| 704 | 4 | — | Trailer auxiliary output circuit (WABCO aux): circuit shorted to ground (voltage low) | Configurable Auxiliary Output Solenoid Circuit |
| 790 | 8 | — | Wheel speed sensor, steer axle right: signal frequency or pulse width wrong | Wheel-Speed Signal Erratic / Implausible |
| 792 | 6 | 4+3 | Sensor circuit shorted; check for corroded or damaged wiring (drive axle right) | Wheel-Speed Sensor Circuit Fault |
| 794 | 6 | — | Wheel speed sensor, additional axle right: circuit shorted to ground, current too high | Wheel-Speed Sensor Circuit Fault |
| 800 | 4 | — | ABS pressure modulator valve channel, additional axle right: circuit shorted to ground (voltage low) | ABS Pressure Modulator Valve Solenoid |
| 1807 | 7 | 8+6 | ESC disabled; steering ratio implausible, recalibrate SAS after steering/front-axle work | Steering Angle Sensor (SAS) Circuit |
| 520210 | 8 | — | ESC module CAN communication fault: message counter increments incorrectly | Generic J1939 Data Link Fault (Erratic, Slow or Misconfigured) |
| 520504 | 9 | — | Wheel-speed plausibility, axle 2 right: sudden downward jump in wheel-speed reading | Wheel-Speed Signal Erratic / Implausible |