P1371 – BMW DTC

BMW DTC P1371 – Ionic Current Signal Amplification Control Circuit High (Bank 1)

DTC P1371 meaning on BMW

The Diagnostic Trouble Code (DTC) P1371 for BMW refers to the Ionic Current Signal Amplification Control Circuit High on Bank 1. This code indicates that there is a high voltage condition detected in the circuit responsible for amplifying the ionic current signal in the engine control module.

BMW DTC P1371 symptoms

Symptoms of DTC P1371 on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Engine running rough or misfiring
• Reduced engine performance
• Potential stalling or difficulty starting the engine

BMW DTC P1371 causes

Common causes of DTC P1371 on a BMW include:

• Faulty ionic current module
• Wiring or connection issues in the amplification control circuit
• Defective engine control module (ECM)
• Corrosion or damage to electrical components

BMW DTC P1371 seriousness

DTC P1371 should not be ignored as it can lead to poor engine performance and potential drivability issues. Ignoring this code may result in further damage to engine components over time.

How to diagnose DTC P1371 on BMW

To diagnose DTC P1371 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the ECM
2. Inspect the wiring and connections in the amplification control circuit for any damage or corrosion
3. Test the ionic current module for proper functionality
4. Check the ECM for any signs of malfunction

How to fix DTC P1371 on BMW

To fix DTC P1371 on a BMW, you may need to:

1. Replace the faulty ionic current module
2. Repair or replace any damaged wiring or connections in the circuit
3. If the ECM is faulty, it may need to be reprogrammed or replaced
4. Clear the fault codes and perform a test drive to ensure the issue is resolved

How to erase DTC P1371 on BMW

To erase DTC P1371 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes stored in the ECM
2. After fixing the underlying issue, reset the ECM by disconnecting the battery for a few minutes
3. Perform a final scan to ensure 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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