P27A2 – BMW DTC

BMW DTC P27A2 – Electric/Auxiliary Transmission Fluid Pump ‘B’ Control Circuit/Open

DTC P27A2 meaning on BMW

DTC P27A2 indicates an issue with the Electric/Auxiliary Transmission Fluid Pump ‘B’ Control Circuit being open on a BMW vehicle. This means that there is a malfunction in the control circuit that manages the operation of the auxiliary transmission fluid pump.

BMW DTC P27A2 symptoms

Symptoms of DTC P27A2 on a BMW may include:

• Transmission shifting issues
• Transmission slipping
• Transmission overheating
• Check Engine Light illuminated

BMW DTC P27A2 causes

Common causes of DTC P27A2 on a BMW include:

• Faulty electric/auxiliary transmission fluid pump
• Wiring or connector issues in the control circuit
• Low transmission fluid level
• Internal transmission problems

BMW DTC P27A2 seriousness

Ignoring DTC P27A2 on a BMW can lead to serious transmission problems and potential damage. It is important to address this issue promptly to prevent further damage to the transmission system.

How to diagnose DTC P27A2 on BMW

To diagnose DTC P27A2 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes
2. Inspect the electric/auxiliary transmission fluid pump and its wiring for any visible damage
3. Check the transmission fluid level and condition
4. Perform a thorough inspection of the transmission system for any other related issues

How to fix DTC P27A2 on BMW

To fix DTC P27A2 on a BMW, you may need to:

1. Replace the faulty electric/auxiliary transmission fluid pump
2. Repair or replace any damaged wiring or connectors in the control circuit
3. Ensure the transmission fluid level is correct and top up if necessary
4. Address any other underlying transmission issues that may have contributed to the fault code

How to erase DTC P27A2 on BMW

To erase DTC P27A2 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes
2. After fixing the underlying issue, perform a test drive to ensure the fault code does not return

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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