Tiptronic System G43

P1818

81, Pressure regulator 2

Diagnosis conditions
- Ignition on

Possible fault cause
- Short circuit to B+/ground/mutual short circuit or open circuit
- Pressure regulator is faulty
- Tiptronic control module is faulty

Affected pins
Pin 1, pin 52 and pin 53

Diagnosis/troubleshooting

Part 1:

Part 2:

Part 3:

Part 4: