2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 736
- Ignition on
- The following fault is not detected: P1832
- The following fault is not detected: P183A
Possible fault causes
- Line between pressure regulator 4 and PDK control unit, short circuit to ground
- Pressure regulator 4 faulty
- PDK control unit faulty
Fault setting conditions
- Internal current measurement, actuator solenoid R/P: current consumption = 0 mA
- Pressure regulator 4, internally measured control current = 0 mA
- Pressure regulator 4, measured voltage = 0 V
Fault effects
- Power supply switch-off for pressure regulators 4 to 6
- Power supply switch-off for solenoid valves 1 and 2
- Pressure regulator 4 switch-off
- Pressure regulator 5 switch-off
- Pressure regulator 6 switch-off
- Solenoid valve 1 switch-off
- Solenoid valve 2 switch-off
- Engaged gear is held until vehicle stops.
- Moving off possible in all gears
- Transmission limp-home indication in instrument cluster control unit
With P17AC
P2721
Diagnosis information - PDK
Electrical pressure adjuster 4, shunt
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 fault is not detected: P1832
- The following fault is not detected: P183A
- The following fault is not detected: P1842
Possible fault causes
- Shunt circuit in line between pressure regulator 4 and PDK control unit
- Pressure regulator 4 faulty
- PDK control unit faulty
Fault setting conditions
- Actual pressure regulator current < setpoint current (maximum deviation = 35 mA)
Fault effects
- Power supply switch-off, pressure regulator for system pressure and synchro selection
- Power supply switch-off, solenoid valves
- Pressure regulator for system pressure and synchro selection, switch-off
- Solenoid valves switch-off
- Last gear held
- Transmission limp-home indication in instrument cluster control unit
With P17A4
P2721
Diagnosis information - PDK
Electrical pressure adjuster 4, shunt
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.
