P3187 – BMW DTC

BMW DTC P3187 – Intake Air Temperature Sensor Circuit High (Bank 2)

DTC P3187 meaning on BMW

The Diagnostic Trouble Code (DTC) P3187 for BMW indicates a fault in the Intake Air Temperature Sensor Circuit on Bank 2. This code is triggered when the Engine Control Module (ECM) detects a high voltage signal from the intake air temperature sensor on Bank 2, which is typically associated with a circuit malfunction or sensor failure.

BMW DTC P3187 symptoms

Symptoms of DTC P3187 on a BMW may include:

• Check Engine Light illuminated on the dashboard
• Reduced engine performance
• Potential decrease in fuel efficiency
• Engine stalling or rough idling

BMW DTC P3187 causes

Common causes of DTC P3187 on a BMW include:

• Faulty intake air temperature sensor
• Wiring or connector issues in the intake air temperature sensor circuit
• ECM software or hardware problems

BMW DTC P3187 seriousness

While DTC P3187 may not cause immediate drivability issues, it is important to address this fault promptly to prevent potential engine performance problems and ensure optimal fuel efficiency. Ignoring this code could lead to further damage to engine components over time.

How to diagnose DTC P3187 on BMW

To diagnose DTC P3187 on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the intake air temperature sensor and its wiring for any visible damage or corrosion
3. Test the intake air temperature sensor using a multimeter to check for proper resistance values
4. Check the ECM for any stored codes related to the intake air temperature sensor circuit

How to fix DTC P3187 on BMW

To fix DTC P3187 on a BMW, you can try the following solutions:

1. Replace the intake air temperature sensor if it is found to be faulty
2. Repair any damaged wiring or connectors in the intake air temperature sensor circuit
3. Clear the fault code and reset the ECM by disconnecting the battery for a few minutes
4. If the issue persists, seek professional help for further diagnosis and repair

How to erase DTC P3187 on BMW

To erase DTC P3187 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to clear the fault code from the ECM memory
2. Ensure that the underlying issue causing the fault code has been resolved
3. Perform a test drive to confirm that the Check Engine Light does not reappear

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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