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P26A2 – BMW DTC

BMW DTC P26A2 – Exhaust Aftertreatment Glow Plug Circuit High

DTC P26A2 meaning on BMW

DTC P26A2 for BMW refers to the Exhaust Aftertreatment Glow Plug Circuit High. This diagnostic trouble code indicates that the engine control module (ECM) has detected a high voltage condition in the glow plug circuit of the exhaust aftertreatment system.

BMW DTC P26A2 symptoms

Symptoms of BMW DTC P26A2 may include:

  • Check Engine Light (CEL) illuminated on the dashboard
  • Reduced engine performance
  • Increased fuel consumption
  • Possible exhaust system issues

BMW DTC P26A2 causes

Common causes of BMW DTC P26A2 include:

  • Faulty glow plug
  • Wiring or connection issues in the glow plug circuit
  • Defective engine control module (ECM)
  • Software glitches

BMW DTC P26A2 seriousness

The seriousness of BMW DTC P26A2 lies in the potential impact on engine performance and emissions. Ignoring this fault code can lead to increased fuel consumption, reduced engine efficiency, and potential damage to the exhaust aftertreatment system.

How to diagnose DTC P26A2 on BMW

To diagnose BMW DTC P26A2, follow these steps:

  1. Use a diagnostic scanner to retrieve the fault codes stored in the ECM.
  2. Inspect the glow plug circuit for any visible damage or loose connections.
  3. Test the glow plug resistance to determine if it is functioning correctly.
  4. Check the ECM for any software updates or glitches.

How to fix DTC P26A2 on BMW

To fix BMW DTC P26A2, consider the following:

  1. Replace any faulty glow plugs in the exhaust aftertreatment system.
  2. Repair or replace any damaged wiring or connections in the glow plug circuit.
  3. If the ECM is faulty, consider replacing it with a new unit.
  4. Ensure that the ECM software is up to date and functioning correctly.

How to erase DTC P26A2 on BMW

To erase BMW DTC P26A2, follow these steps:

  1. Use a diagnostic scanner to clear the fault codes stored in the ECM.
  2. After clearing the codes, perform a test drive to ensure the issue does not reoccur.
  3. If the fault code persists, further diagnosis may be required to address the underlying issue.

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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