2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 231
- Complement error
Fault effects
- CAN alive counter freeze
- Engine speed limitation
- Transmission limp-home indication in instrument cluster control unit
Diagnosis Information - PDK (Dual-Clutch Transmission)
P18B4
Diagnosis information - PDK
Software monitoring, reset was triggered by application software 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
Fault effects
- No power transmission for reference speed < 5 km/h and valid transmission range
- Transmission limp-home indication in instrument cluster control unit
Software Monitoring, Calculation Of E-shift Position Implausible
P18B5
Diagnosis information - PDK
Software monitoring, calculation of E-shift position implausible
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
- Racing start status without driver request
- Power transmission without driver request
- No shift in spite of driver request
- Displayed position not same as engaged position
Fault effects
- Emergency hold function
- Transmission limp-home indication in instrument cluster control unit
Positive Engine Torque Intervention Not Possible
P18B5
Diagnosis information - PDK
Positive 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.