U0552 – BMW DTC

BMW DTC U0552 – Invalid Data Received From Running Board Control Module ‘B’

DTC U0552 meaning on BMW

DTC U0552 on a BMW indicates that the Engine Control Module (ECM) has detected invalid data from the Running Board Control Module ‘B’. This means that there is a communication error between the ECM and the running board control module, leading to the ECM receiving data that it cannot interpret or use.

BMW DTC U0552 symptoms

Symptoms of DTC U0552 on a BMW may include:

• Malfunction indicator light (MIL) or check engine light illuminated on the dashboard
• Running board not deploying or retracting properly
• Loss of communication with the running board control module

BMW DTC U0552 causes

The common causes of DTC U0552 on a BMW include:

• Faulty running board control module ‘B’
• Wiring or connection issues between the ECM and the running board control module
• Software glitches or programming errors

BMW DTC U0552 seriousness

While DTC U0552 may not directly affect the drivability of the vehicle, it is important to address this issue promptly. Ignoring communication errors between modules can lead to further electrical problems and potentially affect the overall performance of the vehicle.

How to diagnose DTC U0552 on BMW

To diagnose DTC U0552 on a BMW, follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the ECM.
2. Check the wiring and connections between the ECM and the running board control module for any visible damage or loose connections.
3. Perform a communication test using a diagnostic tool to verify the data exchange between the modules.

How to fix DTC U0552 on BMW

To fix DTC U0552 on a BMW, consider the following solutions:

1. Inspect and repair any damaged wiring or connections between the ECM and the running board control module.
2. Replace the faulty running board control module ‘B’ if necessary.
3. Update the software of the modules to the latest version to address any programming errors.

How to erase DTC U0552 on BMW

To erase DTC U0552 on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault codes stored in the ECM.
2. After fixing the underlying issue causing the fault code, perform a test drive to ensure 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

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