2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 397
Fault effects
- Transmission limp-home indication in instrument cluster control unit
- Message counter stopped
Engine Torque Intervention Not Possible
P189C
Diagnosis information - PDK
Engine torque intervention not possible
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
- Fault in CAN bus
Fault setting conditions
- Torque intervention not possible
Fault effects
- Transmission limp-home indication in instrument cluster control unit
Software Monitoring, Reset Was Triggered By Operating System Monitoring A
P189C
Diagnosis information - PDK
Software monitoring, reset was triggered by operating system monitoring A
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
- Internal software monitoring reports fault
- Undervoltage
Fault effects
- No power transmission for reference speed < 5 km/h (3 mph) and valid transmission range
- Transmission limp-home indication in instrument cluster control unit
Software Monitoring, Implausible Calculation Of Positive Engine Torque Intervention
P189C
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