P3307 – BMW DTC

BMW DTC P3307 – Ignition Coil Cylinder 4 Contact Resistance or High-Impedance

DTC P3307 meaning on BMW

The Diagnostic Trouble Code (DTC) P3307 for BMW indicates an issue with the ignition coil in cylinder 4. Specifically, it points to a problem with the contact resistance or high impedance in the ignition coil circuit for cylinder 4.

BMW DTC P3307 symptoms

Symptoms of DTC P3307 on a BMW may include:

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

BMW DTC P3307 causes

The common causes of DTC P3307 on a BMW are:

• Defective ignition coil in cylinder 4
• Wiring issues in the ignition coil circuit
• Poor electrical connections

BMW DTC P3307 seriousness

Ignoring DTC P3307 on a BMW can lead to further engine performance issues and potential damage. It is important to address this code promptly to prevent more severe problems.

How to diagnose DTC P3307 on BMW

To diagnose DTC P3307 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault code
2. Inspect the ignition coil in cylinder 4 for any visible damage
3. Check the wiring and connections in the ignition coil circuit
4. Perform a resistance test on the ignition coil

How to fix DTC P3307 on BMW

To fix DTC P3307 on a BMW, you can:

1. Replace the ignition coil in cylinder 4 if it is found to be faulty
2. Repair any damaged wiring or connections in the ignition coil circuit
3. Clear the fault code and test drive the vehicle to ensure the issue is resolved

How to erase DTC P3307 on BMW

To erase DTC P3307 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault code
2. Ensure that the underlying issue causing the fault code has been addressed
3. Perform a final check to confirm that the code has been successfully erased

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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