BMW DTC P0550 – Power Steering Pressure Sensor/Switch Circuit
DTC P0550 meaning on BMW
DTC P0550 on a BMW indicates an issue with the power steering pressure sensor/switch circuit. This diagnostic trouble code is triggered when the powertrain control module (PCM) detects a malfunction in the sensor or its associated circuit.
BMW DTC P0550 symptoms
Symptoms of DTC P0550 in a BMW may include:
- Loss of power steering assistance
- Stiff or heavy steering
- Power steering warning light on the dashboard
BMW DTC P0550 causes
Common causes of DTC P0550 in a BMW include:
- Failed power steering pressure sensor
- Wiring or connector issues in the sensor circuit
- Low power steering fluid level
BMW DTC P0550 seriousness
DTC P0550 should be addressed promptly as it can lead to a loss of power steering assistance, making the vehicle difficult to steer. Driving with this issue can compromise safety and control, especially at lower speeds or during parking maneuvers.
How to diagnose DTC P0550 on BMW
To diagnose DTC P0550 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the power steering pressure sensor and its wiring for any visible damage
- Test the sensor’s resistance and voltage output
- Check the power steering fluid level and condition
How to fix DTC P0550 on BMW
To fix DTC P0550 on a BMW, the following steps may be taken:
- Replace the faulty power steering pressure sensor
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Ensure the power steering fluid level is adequate and top up if necessary
How to erase DTC P0550 on BMW
After addressing the underlying issue causing DTC P0550 on a BMW, the fault codes can be cleared using a diagnostic scanner. This will reset the system and turn off the warning light on the dashboard.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.