Hydraulic Gear Selection: Implausible Shift Rod Movement For Automatic Gearshift (Even Target Gear)

P17D9

Diagnosis information - PDK

Hydraulic gear selection: implausible shift rod movement for automatic gearshift (even target gear)

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

Fault effects
- Gear held
- Gears possible in D
- No gear preselection
- Transmission limp-home indication in instrument cluster control unit