2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 91
Clutch 2 Cannot Be Opened During Shift Overlap
P17B4
Diagnosis information - PDK
Clutch 2 cannot be opened during shift overlap
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
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Tolerance value exceeded
Fault effects
- Transmission limp-home indication in instrument cluster control unit
Clutch 1, Implausible Control Pressure
P17B4
Diagnosis information - PDK
Clutch 1, implausible control pressure
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
- The following faults are not detected: P0841, P0843, P181A
Possible fault causes
- Shunt in wiring harness
- Clutch faulty
- Hydraulics faulty
Fault setting conditions
- Actual pressure at clutch 1 < touchpoint + offset (1 bar)
- Actual pressure at clutch 1 < prefilling pressure + offset (0.6 bar)
Fault effects
- Open clutches 1 and 2
- Disengage all gears
- Moving off in 2nd gear
- Only gears 2, 4 and 6 are possible
- Transmission limp-home indication in instrument cluster control unit
Clutch 2, Implausible Control Pressure
P17B4
Diagnosis information - PDK
Clutch 2, implausible control pressure
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
- The following faults are not detected: P0846, P0848, P181B
