Hydraulic Gear Selection: Shift Rod Was Moved Without Control Request

P17E2

Diagnosis information - PDK

Hydraulic gear selection: shift rod was moved without control request

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 faults are not detected: P1731, P1732, P1733, P1734

Possible fault causes
- Clutch faulty
- Hydraulics faulty

Fault setting conditions
- Shift rod moves by approx. 2 mm from neutral or end position without control request

Fault effects
- Gear held
- Pressure regulator for synchro selection unpressurised
- Speed limitation to overspeed in 1st gear
- Transmission limp-home indication in instrument cluster control unit