P0551 – BMW DTC

BMW DTC P0551 – Power Steering Pressure Sensor/Switch Circuit Range/Performance

DTC P0551 meaning on BMW

The Diagnostic Trouble Code (DTC) P0551 for BMW refers to an issue with the Power Steering Pressure Sensor/Switch Circuit Range/Performance. This code is triggered when the power steering pressure sensor or switch circuit is operating outside the expected range or performance parameters.

BMW DTC P0551 symptoms

Symptoms of DTC P0551 on a BMW may include:

• Difficulty steering
• Power steering failure
• Unusual noises coming from the power steering system
• Warning lights on the dashboard, such as the power steering warning light

BMW DTC P0551 causes

The common causes of DTC P0551 on a BMW include:

• Faulty power steering pressure sensor or switch
• Wiring or connector issues in the power steering pressure sensor circuit
• Low power steering fluid level
• Power steering pump failure

BMW DTC P0551 seriousness

DTC P0551 should be addressed promptly as it can lead to power steering failure, making the vehicle difficult or unsafe to drive. Ignoring this issue can result in further damage to the power steering system and compromise the vehicle’s handling and safety.

How to diagnose DTC P0551 on BMW

To diagnose DTC P0551 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault codes stored in the vehicle’s computer.
2. Inspect the power steering pressure sensor and its wiring for any visible damage or corrosion.
3. Check the power steering fluid level and condition.
4. Perform a power steering system pressure test to verify sensor readings.

How to fix DTC P0551 on BMW

To fix DTC P0551 on a BMW, you can try the following solutions:

1. Replace the faulty power steering pressure sensor or switch.
2. Repair or replace any damaged wiring or connectors in the power steering pressure sensor circuit.
3. Ensure the power steering fluid level is adequate and top up if necessary.
4. If the power steering pump is faulty, replace it with a new one.

How to erase DTC P0551 on BMW

To erase DTC P0551 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the vehicle’s computer. After fixing the underlying issue causing the code, you can reset the system to see if the code reappears. If the problem has been successfully resolved, the code should 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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