Software Monitoring, Implausible Calculation Of Positive Engine Torque Intervention

P189A

Diagnosis information - PDK

Software monitoring, implausible calculation of positive engine torque intervention

Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are then tested and any faults are stored.
- Ignition on

Possible fault causes
- PDK control unit faulty

Fault setting conditions
- Fault in calculation path for positive engine intervention

Fault effects
- Transmission limp-home indication in instrument cluster control unit
- Message counter stopped