P0351 – BMW DTC

BMW DTC P0351 – Ignition Coil ‘A’ Primary Control Circuit/Open

DTC P0351 meaning on BMW

DTC P0351 on a BMW indicates a fault with the ignition coil ‘A’ primary control circuit. This fault code is triggered when the Engine Control Module (ECM) detects an open circuit or a high resistance in the primary control circuit of ignition coil ‘A’.

BMW DTC P0351 symptoms

Symptoms of DTC P0351 on a BMW may include:

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

BMW DTC P0351 causes

Common causes of DTC P0351 on a BMW include:

• Defective ignition coil ‘A’
• Open or short circuit in the wiring harness connected to ignition coil ‘A’
• Faulty Engine Control Module (ECM)

BMW DTC P0351 seriousness

Ignoring DTC P0351 on a BMW can lead to potential engine performance issues such as misfires, rough idling, and decreased fuel efficiency. It is important to address this fault code promptly to prevent further damage to the engine components.

How to diagnose DTC P0351 on BMW

To diagnose DTC P0351 on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and check for any additional codes present.
2. Inspect the wiring harness connected to ignition coil ‘A’ for any signs of damage or corrosion.
3. Test the resistance of the ignition coil ‘A’ primary control circuit using a multimeter.
4. Check the ignition coil ‘A’ for proper operation and replace if necessary.

How to fix DTC P0351 on BMW

To fix DTC P0351 on a BMW, follow these steps:

1. Replace the faulty ignition coil ‘A’ if it is determined to be the cause of the fault.
2. Repair any open or short circuits in the wiring harness connected to ignition coil ‘A’.
3. If the Engine Control Module (ECM) is faulty, replace it with a new one and program it to the vehicle.

How to erase DTC P0351 on BMW

To erase DTC P0351 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After fixing the underlying issue that caused the fault code, you can then erase it to reset the Check Engine Light (CEL) and ensure the repair was successful.

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

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.