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P0544 – BMW DTC

BMW DTC P0544 – Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 1)

DTC P0544 meaning on BMW

DTC P0544 on a BMW indicates a fault with the Exhaust Gas Temperature (EGT) Sensor Circuit for Bank 1 Sensor 1. This code is triggered when the Engine Control Module (ECM) detects a voltage signal outside the normal range from the EGT sensor.

BMW DTC P0544 symptoms

Symptoms of DTC P0544 on a BMW may include:

  • Check Engine Light illuminated
  • Reduced engine performance
  • Increased fuel consumption
  • Possible engine misfires

BMW DTC P0544 causes

Common causes of DTC P0544 on a BMW include:

  • Defective EGT sensor
  • Wiring or connector issues in the EGT sensor circuit
  • ECM software or hardware problems

BMW DTC P0544 seriousness

While DTC P0544 may not always result in immediate drivability issues, it is important to address this fault promptly to prevent potential damage to the engine or emissions system.

How to diagnose DTC P0544 on BMW

To diagnose DTC P0544 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 wiring and connectors related to the EGT sensor
  3. Test the EGT sensor for proper resistance and voltage output
  4. Check for any ECM software updates or reprogramming

How to fix DTC P0544 on BMW

To fix DTC P0544 on a BMW, you may need to:

  1. Replace the faulty EGT sensor
  2. Repair any damaged wiring or connectors in the EGT sensor circuit
  3. Update the ECM software if necessary

How to erase DTC P0544 on BMW

To erase DTC P0544 on a BMW, you can use a diagnostic scanner to clear the fault code after the underlying issue has been resolved. This will reset the Check Engine Light and turn off the code.

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

← All BMW Diagnostic Trouble Codes

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