What does P1633 mean?

This fault indicates a short circuit to ground in the drive circuit for the second actuator. This prevents the actuator from functioning correctly.

• Wiring short to ground in the actuator circuit
• The actuator coil is shorted internally
• Fault within the ECU controlling the actuator

Click steps to track your progress.

1. 1

   Examine the wiring connecting to actuator 2 for shorts to ground.

2. 2

   Test the actuator for internal resistance and shorts.

3. 3

   If the wiring and actuator seem fine, the ECU may have a fault.