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P157E – BMW DTC

BMW DTC P157E – Throttle Valve Enable Line Circuit High (Bank 2)

DTC P157E meaning on BMW

The DTC P157E error code on a BMW indicates an issue with the Throttle Valve Enable Line Circuit High in Bank 2. This means that there is a high voltage condition detected in the circuit responsible for enabling the throttle valve in the second bank of the engine.

BMW DTC P157E symptoms

Symptoms of the BMW DTC P157E error code may include:

  • Check Engine Light illuminated on the dashboard
  • Reduced engine performance
  • Engine stalling or hesitation
  • Difficulty accelerating

BMW DTC P157E causes

Common causes of the BMW DTC P157E error code include:

  • Faulty throttle valve position sensor
  • Short circuit or open circuit in the throttle valve enable line
  • Corrosion or poor connection in the throttle valve circuit
  • Issues with the engine control module (ECM)

BMW DTC P157E seriousness

The DTC P157E error code should be addressed promptly as it can lead to drivability issues and potential engine damage if left unresolved. Ignoring this code may result in poor engine performance and increased fuel consumption.

How to diagnose DTC P157E on BMW

To diagnose the DTC P157E error code on a BMW, you can perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault codes stored in the ECM
  2. Inspect the throttle valve enable line for any visible damage or corrosion
  3. Check the throttle valve position sensor for proper operation
  4. Test the throttle valve circuit for continuity and voltage levels

How to fix DTC P157E on BMW

To fix the DTC P157E error code on a BMW, you may need to:

  1. Replace the faulty throttle valve position sensor
  2. Repair any short circuits or open circuits in the throttle valve enable line
  3. Clean or repair any corroded connections in the throttle valve circuit
  4. Reset the ECM and clear the fault codes

How to erase DTC P157E on BMW

To erase the DTC P157E error code on a BMW, you can:

  1. Use a diagnostic scanner to clear the fault codes stored in the ECM
  2. Ensure that the underlying issue causing the fault code has been resolved
  3. Perform a test drive to confirm that the code 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

← All BMW Diagnostic Trouble Codes

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