Diagnostic Aids

Scan tester does not have the ability to help diagnose Code 41. If PCM is faulty and must be replaced, the new PCM must be reprogrammed. This requires special equipment.

Fig 1: Code 41 Schematic (3.4L (VIN S)) Cylinder Select Error

Fig 2: Code 41 Diagnostic Flow Chart (3.4L (VIN S)) Cylinder Select Error