DTC 54

DTC 54

Response (confirmation) from transmission guard not received
Tolerance time exceeded when torque reduction requested to the DME.

NOTE: The redundancy transistor is switched off. The setpoint values of the current regulator are set to 0 and all change-over valves are switched off. The control module is then in emergency operation. Minimal cycle is additionally activated.

Diagnosis conditions
- Ignition on
- No CAN bus fault
- No DME CAN fault

Possible fault cause
- Fault in the DME

Diagnosis/Troubleshooting