Solenoid Valve 1, Open Circuit

P0974

Diagnosis information - PDK

Solenoid valve 1, open circuit

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: P1832
- The following fault is not detected: P183A
- Solenoid valve 1 active

Possible fault causes
- Line between solenoid valve 1 and PDK control unit faulty
- Solenoid valve 1 faulty
- PDK control unit faulty

Fault setting conditions
- Internal current measurement, solenoid valve 1: current consumption = 0 mA

Fault effects
- Solenoid valve 1 switch-off
- Engaged gear is held until vehicle stops.
- Moving off possible only in 3rd gear
- Transmission limp-home indication in instrument cluster