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P1AEF – BMW DTC

BMW DTC P1AEF – Drive Motor ‘B’ High Voltage Circuit High

DTC P1AEF meaning on BMW

DTC P1AEF for BMW refers to the Drive Motor ‘B’ High Voltage Circuit High. This diagnostic trouble code indicates that there is a high voltage condition detected in the drive motor ‘B’ circuit of the vehicle.

BMW DTC P1AEF symptoms

Symptoms of BMW DTC P1AEF may include:

  • Check Engine Light illuminated
  • Reduced power or performance
  • Vehicle may go into a reduced power mode

BMW DTC P1AEF causes

Possible causes of BMW DTC P1AEF include:

  • Faulty drive motor ‘B’
  • High voltage wiring issues
  • Issues with the drive motor control module

BMW DTC P1AEF seriousness

The seriousness of BMW DTC P1AEF lies in the potential for reduced power and performance of the vehicle. Ignoring this DTC can lead to further damage to the drive motor system.

How to diagnose DTC P1AEF on BMW

To diagnose DTC P1AEF on a BMW, a mechanic may perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault codes
  2. Inspect the drive motor ‘B’ and associated wiring for any visible damage
  3. Check the drive motor control module for proper operation

How to fix DTC P1AEF on BMW

To fix DTC P1AEF on a BMW, the following steps may be taken:

  1. Repair or replace any damaged wiring in the drive motor ‘B’ circuit
  2. Replace the faulty drive motor ‘B’ if necessary
  3. Address any issues with the drive motor control module

How to erase DTC P1AEF on BMW

To erase DTC P1AEF on a BMW, the fault codes can be cleared using a diagnostic scanner. After the necessary repairs have been made, the codes can be reset to see if the issue has been resolved.

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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