With P0604

P0706

Diagnosis information - PDK

PDK control unit, internal fault

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

Possible fault causes
- Control unit faulty

Fault setting conditions
- Internal diagnostic routine returns fault

Fault effects
- Power supply switch-off for pressure regulator
- Solenoid valve power supply switch-off
- Hydraulic control is switched off
- Start enable only in position P
- Limp-home message in instrument cluster