BMW DTC C0551 – Longitudinal Acceleration Sensor Circuit/Open
DTC C0551 meaning on BMW
DTC C0551 on a BMW refers to a fault with the Longitudinal Acceleration Sensor Circuit being open or having a poor connection. The Longitudinal Acceleration Sensor is responsible for measuring the vehicle’s acceleration in the forward or backward direction.
BMW DTC C0551 symptoms
Symptoms of DTC C0551 on a BMW may include:
- ABS warning light illuminated on the dashboard
- Traction control system malfunction
- Stability control system not functioning properly
BMW DTC C0551 causes
Common causes of DTC C0551 on a BMW include:
- Loose or damaged wiring in the Longitudinal Acceleration Sensor circuit
- Corrosion or poor connections in the sensor circuit
- Faulty Longitudinal Acceleration Sensor
BMW DTC C0551 seriousness
The seriousness of DTC C0551 on a BMW lies in the potential compromise of the vehicle’s safety systems. Issues with the Longitudinal Acceleration Sensor can affect the proper functioning of the ABS, traction control, and stability control systems, leading to reduced vehicle stability and control.
How to diagnose DTC C0551 on BMW
To diagnose DTC C0551 on a BMW, follow these steps:
- Use a diagnostic scanner to retrieve the fault codes from the vehicle’s computer
- Inspect the wiring and connections in the Longitudinal Acceleration Sensor circuit for any damage or corrosion
- Test the Longitudinal Acceleration Sensor for proper functionality
How to fix DTC C0551 on BMW
To fix DTC C0551 on a BMW, you can:
- Repair or replace any damaged wiring in the Longitudinal Acceleration Sensor circuit
- Clean or repair any corroded connections in the sensor circuit
- Replace the Longitudinal Acceleration Sensor if it is found to be faulty
How to erase DTC C0551 on BMW
To erase DTC C0551 on a BMW, you can:
- Use a diagnostic scanner to clear the fault codes from the vehicle’s computer
- Ensure that the underlying issue causing the fault code has been resolved
- Perform a test drive to confirm that the fault 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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