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U1151 – BMW DTC

BMW DTC U1151 – Lost Communication With Throttle Actuator (Bank 2)

DTC U1151 meaning on BMW

DTC U1151 on a BMW indicates a communication error between the Engine Control Module (ECM) and the Throttle Actuator Control Module for Bank 2. This error code signifies that the ECM has lost communication with the throttle actuator on Bank 2, which can lead to various drivability issues.

BMW DTC U1151 symptoms

Symptoms of DTC U1151 on a BMW may include:

  • Reduced engine power
  • Engine stalling
  • Difficulty accelerating
  • Check Engine Light (CEL) illuminated

BMW DTC U1151 causes

The possible causes of DTC U1151 on a BMW include:

  • Faulty throttle actuator
  • Wiring or connection issues between the ECM and throttle actuator
  • ECM software or hardware problems

BMW DTC U1151 seriousness

DTC U1151 should be addressed promptly as it can lead to drivability issues and potential safety concerns. Ignoring this fault code may result in further damage to engine components or unsafe driving conditions.

How to diagnose DTC U1151 on BMW

To diagnose DTC U1151 on a BMW, a mechanic would typically perform the following steps:

  1. Use a diagnostic scanner to retrieve the fault codes
  2. Inspect the wiring and connections between the ECM and throttle actuator
  3. Test the throttle actuator for proper operation
  4. Check for any software updates for the ECM

How to fix DTC U1151 on BMW

To fix DTC U1151 on a BMW, the following steps may be taken:

  1. Repair or replace any damaged wiring or connectors
  2. Replace the faulty throttle actuator if necessary
  3. Update the ECM software if applicable
  4. Clear the fault codes and perform a test drive to ensure the issue is resolved

How to erase DTC U1151 on BMW

To erase DTC U1151 on a BMW, follow these steps:

  1. Use a diagnostic scanner to clear the fault codes
  2. Perform a test drive to confirm that the code has been successfully erased

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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