P172F

P172F

Diagnosis Information - PDK

Transmission oil temperature sensor, 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
- Short circuit in line between oil temperature sensor and PDK control unit
- Oil temperature sensor faulty

Fault setting conditions
- Measured voltage > threshold value (2.35 V)

Fault effects
- Substitute value is used
- Clutch pressure < holding threshold 8.1 bar and torque limitation
- Transmission limp-home indication in instrument cluster control unit