2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 695
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: Reset Was Triggered By Application Software Monitoring
P1991
Diagnosis information - PDK
Software monitoring: reset was triggered by application software monitoring
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
Fault effects
- No power transmission at speeds < 5 km/h (3 mph)
- Transmission limp-home indication in instrument cluster control unit
Diagnosis Information - PDK (Dual-Clutch Transmission)
P1991
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
P2088
P2088
Diagnosis information - Control unit DME (DFI)
Final stage Adjustment Intake camshaft Bank 1
Diagnostic conditions
- Period since engine was started > 10 Second(s)
- none of the following faults stored: P1556, P1557, P1558
