P25E4 – BMW DTC

BMW DTC P25E4 – ‘B’ Camshaft Position – Unable to Achieve Locked Position Bank 1

DTC P25E4 meaning on BMW

The DTC P25E4 error code on a BMW indicates an issue with the ‘B’ camshaft position sensor on Bank 1. Specifically, it signifies that the camshaft is unable to achieve the locked position as expected.

BMW DTC P25E4 symptoms

Symptoms of the BMW DTC P25E4 code may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Engine running rough or misfiring
• Reduced engine performance
• Difficulty starting the engine

BMW DTC P25E4 causes

Common causes of the BMW DTC P25E4 code include:

• Malfunctioning camshaft position sensor
• Wiring or connector issues related to the camshaft position sensor
• Timing chain or belt problems
• Engine mechanical issues

BMW DTC P25E4 seriousness

The BMW DTC P25E4 code should not be ignored, as it can lead to potential engine performance issues and further damage if left unresolved. It is recommended to address this issue promptly to prevent any long-term problems.

How to diagnose DTC P25E4 on BMW

To diagnose the DTC P25E4 code on a BMW, you can perform the following steps:

1. Use an OBD-II scanner to retrieve the specific fault code
2. Inspect the camshaft position sensor and its wiring for any visible damage
3. Check the timing chain or belt for proper alignment
4. Perform a visual inspection of the engine components related to the camshaft

How to fix DTC P25E4 on BMW

To fix the DTC P25E4 code on a BMW, you may need to:

1. Replace the faulty camshaft position sensor
2. Repair or replace any damaged wiring or connectors
3. Inspect and potentially replace the timing chain or belt if necessary
4. Address any underlying engine mechanical issues

How to erase DTC P25E4 on BMW

To erase the DTC P25E4 code on a BMW, you can:

1. Use an OBD-II scanner to clear the fault code
2. After fixing the underlying issue, reset the Check Engine Light by clearing the code
3. Ensure that the repair has been successful by monitoring 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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