Diagnosis Information - PDK (Dual-Clutch Transmission)

P173E

Diagnosis information - PDK

Transmission input shaft speed sensor, clutch 2, short circuit to B+

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: P1824
- The following fault is not detected: P1825

Possible fault causes
- Line between speed sensor 2 and PDK control unit faulty
- Speed sensor for clutch 2 faulty
- PDK control unit faulty

Fault setting conditions
- Sensor voltage > threshold value (> 4.5 V)

Fault effects
- Electrical substitute value
- No gear pre-selection
- No R gear
- Transmission limp-home indication in instrument cluster control unit