P0302 – BMW DTC

BMW DTC P0302 – Cylinder 2 Misfire Detected

DTC P0302 meaning on BMW

DTC P0302 for BMW indicates a misfire has been detected in cylinder 2 of the engine. The Engine Control Module (ECM) monitors the engine’s operation and when it detects a misfire in cylinder 2, it triggers this diagnostic trouble code.

BMW DTC P0302 symptoms

Symptoms of DTC P0302 in a BMW may include:

• Check Engine Light illuminated
• Engine running rough or vibrating
• Loss of power or acceleration
• Increased fuel consumption
• Engine may emit a rough idle or hesitation

BMW DTC P0302 causes

The common causes of DTC P0302 in a BMW include:

• Ignition system issues such as faulty spark plugs or ignition coils
• Fuel system problems like clogged fuel injectors or low fuel pressure
• Vacuum leaks in the intake system
• Compression issues in cylinder 2
• Engine timing problems

BMW DTC P0302 seriousness

Ignoring DTC P0302 in a BMW can lead to potential engine damage, reduced fuel efficiency, and increased emissions. It is important to address this issue promptly to prevent further complications.

How to diagnose DTC P0302 on BMW

To diagnose DTC P0302 on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the trouble codes and identify the misfiring cylinder.
2. Inspect the ignition system components such as spark plugs and ignition coils for wear or damage.
3. Check the fuel system for issues like clogged injectors or low fuel pressure.
4. Perform a compression test on cylinder 2 to check for any internal engine problems.
5. Inspect the intake system for vacuum leaks that could affect cylinder 2.

How to fix DTC P0302 on BMW

To fix DTC P0302 on a BMW, you can try the following solutions:

• Replace faulty spark plugs or ignition coils in cylinder 2.
• Clean or replace clogged fuel injectors.
• Address any vacuum leaks in the intake system.
• Adjust engine timing if necessary.
• Perform a compression test and repair any internal engine issues.

How to erase DTC P0302 on BMW

After fixing the underlying issue causing DTC P0302 on a BMW, you can erase the trouble code using a diagnostic scanner. Clearing the code will reset the Check Engine Light and allow you to monitor the vehicle for any recurring issues.

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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