Network
generic / SAE
U0292
Lost Communication With Drive Motor Control Module B
The vehicle bus reports loss of communication with drive motor control module B. Torque commands for the second EV/hybrid traction motor cannot be coordinated, forcing the powertrain into a degraded mode.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number2 / 92
Possible causes
- Bus wiring open or shorted high
- Module without power or ground medium
- Module failed medium
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–3500 €
- Estimated time: 1–6 h
- Component: drive motor control module b
- Component: vehicle bus wiring
- MIL / check engine light
- drive cycle required
- limp mode possible
Sources
References
sae:J2012