VW Golf 5 2.0L Engine Stalls Immediately: Fault Codes P1637, P1570, U0146, U0164, U0155, P0071, P0408
Hi there. I own a VW Golf 5 with a 2.0L engine that repeatedly starts and then immediately shuts off. After scanning the vehicle, I'm seeing multiple fault codes: P1637, P1570, U0146, U0164, U0155, P0071, and P0409. The car does not start reliably under normal conditions. I've followed troubleshooting guides, but the issue persists. I suspect a communication failure between modules or an immobilizer-related problem. Possible causes include: - Incorrect or damaged key - Key improperly coded - Faulty Engine Control Module (ECM) - Immobilizer system malfunction Given that several of these codes relate to communication failures (U0146, U0155, U0164), I believe a thorough voltage and ground check on the relevant modules is essential. Additionally, I'm considering whether the issue stems from a key or ECM failure. Any insights or solutions for this combination of codes in a VW Golf 5 2.0L would be greatly appreciated.
The car starts and immediately cuts off. Fault code P1570 may indicate an immobilizer or key issue. Possible causes: - Incorrect or damaged key - Key improperly coded - Faulty Engine Control Module (ECM) - Immobilizer system failure Recommended next step: Perform a wiring schematic check for voltage and ground connections on all modules that are not communicating. Refer to this forum's troubleshooting section for detailed guidance on resolving these specific fault codes in VW Golf 5 models.