Control Unit Faulty

U0404

Diagnosis information - Selector lever

Control unit faulty

Diagnostic conditions
The control unit must be active in order to test internal function sequences and diagnosable inputs/outputs.
In the event of a fault, check whether the fault is permanently >present<. To perform the check, erase the fault memory, meet the diagnostic conditions and read out the fault memory again.

- Ignition on

Fault setting condition(s)
- Internal hardware fault in CAN controller
- Internal sensor voltage implausible
- Internal key-lock signal implausible