P0354 – BMW DTC

BMW DTC P0354 – Ignition Coil ‘D’ Primary Control Circuit/Open

DTC P0354 meaning on BMW

The Diagnostic Trouble Code (DTC) P0354 for BMW indicates an issue with the ignition coil ‘D’ primary control circuit having an open circuit. This means that there is a problem with the electrical circuit that controls the ignition coil for cylinder ‘D’. The Engine Control Module (ECM) detects this fault and triggers the DTC P0354.

BMW DTC P0354 symptoms

Symptoms of DTC P0354 on a BMW may include:

• Engine misfires
• Rough idling
• Lack of power
• Check Engine Light (CEL) illuminated on the dashboard

BMW DTC P0354 causes

The common causes of DTC P0354 on a BMW are:

• Faulty ignition coil for cylinder ‘D’
• Open or short circuit in the wiring harness connected to the ignition coil
• Loose or poor electrical connection at the ignition coil or ECM
• Defective ECM

BMW DTC P0354 seriousness

Ignoring DTC P0354 on a BMW can lead to potential engine performance issues, such as misfires and reduced fuel efficiency. Continued driving with this fault can also cause damage to the catalytic converter and other engine components.

How to diagnose DTC P0354 on BMW

To diagnose DTC P0354 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes from the ECM.
2. Inspect the wiring harness connected to the ignition coil ‘D’ for any signs of damage, open circuits, or shorts.
3. Check the electrical connections at the ignition coil and ECM for tightness and corrosion.
4. If necessary, test the ignition coil for proper resistance and functionality.
5. If all checks out, consider testing the ECM for any internal faults.

How to fix DTC P0354 on BMW

To fix DTC P0354 on a BMW, you can perform the following steps:

1. Replace the faulty ignition coil for cylinder ‘D’ with a new one.
2. Repair any damaged wiring harness or connectors related to the ignition coil.
3. Ensure all electrical connections are secure and free of corrosion.
4. If needed, replace the ECM with a new or refurbished unit.

How to erase DTC P0354 on BMW

To erase DTC P0354 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ECM’s memory. After performing the necessary repairs and ensuring the issue is resolved, you can reset the ECM by clearing the DTC P0354 code.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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