There was initially no customer complaint, but concern arose that the engine might not start after refitting the Valvetronic motor during a valve cover seal replacement.

The engine failed to start after the incorrect removal and refitting of the Valvetronic servo motor. The technician unwound the motor, then wound it back off before fastening it, which caused incorrect engagement with the eccentric shaft. As a result, the Valvetronic worm gear broke {{pic1}}, and fault code 2A38 repeatedly returned.