2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 384
Setpoint definitions
NOTE: The specified values and value ranges correspond to the OK state in each case.
Line test setpoints
Short circuit to B+:
- Setpoint voltage -0.5 V --> +0.5 V
Short circuit to ground:
- Setpoint resistance > 0.9 MOhm
Open circuit:
- Setpoint resistance < 2 Ohm
Diagnosis Information - PDK (Dual-Clutch Transmission)
P181B
Diagnostic information - PDK
Pressure sensor 2, short circuit to ground or open circuit
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.
- Engine running
- The following fault is not detected: P1706
- The following fault is not detected: P1707
Possible fault causes
- Short circuit to ground or open circuit in line between pressure sensors and PDK control unit
- Check sensor ground if the following faults are entered additionally:
P172F, P0711, P0712, P0841, P0843, P0846, P0848, P181A, check sensor ground
Fault setting conditions
- Measured pressure < threshold value (0.35 bar)
Fault effects
- Only gears 1, 3, 5 and 7 are possible
- Gear held and no pressure control
- Start enable only in position P
- No pressure control
- Clutch pressure < holding threshold 8.1 bar and torque limitation
- Transmission limp-home indication in instrument cluster control unit
Pressure Sensor Clutch 2, Signal Implausible
P181C
Diagnostic information - PDK
Pressure sensor clutch 2, signal 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
- Line between pressure sensor 2 and PDK control unit faulty
- Pressure sensor 2 faulty
- PDK control unit faulty
- Hydraulic control module faulty
Fault setting conditions
- Measured pressure deviates from the internal plausibility check. Permitted limit was exceeded.
