Network
generic / SAE
U0117
Lost Communication with Drive Motor Control Module 2
The Drive Motor Control Module 2 has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. The second drive-motor controller is silent, limiting electric drive on that axle. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number1 / 17
Possible causes
- Secondary drive motor module unpowered high
- CAN wiring to secondary drive motor broken medium
- Gateway module routing CAN messages incorrectly low
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: 200–3500 €
- Estimated time: 2–10 h
- Component: drive motor control module
- Component: can bus wiring
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012