With P1954

P17D0

Diagnosis information - PDK

Plausibility check of shift rods

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: P1731
- The following fault is not detected: P1732
- The following fault is not detected: P1733
- The following fault is not detected: P1734
- The following fault is not detected: P1706
- The following fault is not detected: P1707

Possible fault causes
- Hydraulic control unit faulty

Fault setting conditions
- No shift rod moves
- Incorrect shift rod moves by more than 1.5 mm

Fault effects
- Pressure regulator 5 switch-off
- Pressure regulator 6 switch-off
- Engaged gear is held until vehicle stops.
- Only gearshifts in D possible
- Transmission limp-home indication in instrument cluster control unit