P0931

P09310

Diagnostic information - Tiptronic

P0929/P0931/P0930/P072A/P072B Solenoid shiftlock

Diagnostic conditions
The control unit must be active in order to test internal function sequences and diagnosable inputs/outputs.
In the event of a fault, check whether the fault is permanently >present<. To perform the check, erase the fault memory, meet the diagnostic conditions and read out the fault memory again.
- Ignition on or engine running
- Tiptronic control unit, internal function test

Checking shiftlock function
Shiftlock prevents the selector lever shifting out of the positions [P] and [N] when the foot brake is not actuated. Shiftlock is enabled when switching on the ignition.

Possible fault causes
- Open circuit/short circuit to B+
- Short circuit to ground
- Solenoid for R/P interlock faulty
- Shiftlock solenoid faulty
- Tiptronic control unit faulty

Fault effects
- Fault display in multi-function display in instrument cluster
- Shiftlock solenoid does not function