P0551 Fault Code
P0551 OBD-II Trouble Code Short Description
Power Steering Pressure Sensor Circuit Range/Performance
What does trouble code P0551 mean?
The P0551 fault code indicates an issue with the power steering pressure sensor circuit, specifically related to the range or performance of the sensor. This sensor plays a crucial role in providing feedback about the hydraulic pressure in the power steering system, which is necessary for optimal steering function. When the sensor detects out-of-range readings, it triggers a warning light on the dashboard and may affect the vehicle's steering responsiveness.
Symptoms
What are the symptoms of the P0551 code?
- Illuminated check engine light
- Increased steering effort or stiffness
- Poor steering response or control
- Unusual noises from the steering system
- Fluctuating power steering assist pressure
Causes
What causes the P0551 code?
- Faulty power steering pressure sensor
- Damaged wiring or connectors in the sensor circuit
- Power steering fluid leaks affecting pressure readings
- Faulty power steering pump
- Engine control module (ECM) issues
Possible Solutions
How to fix P0551?
- Inspect and replace the power steering pressure sensor if it is faulty
- Check and repair any damaged wiring or connectors in the circuit
- Ensure that there are no fluid leaks in the power steering system
- Test the power steering pump for proper function and replace if necessary
- Reprogram or replace the engine control module if it is malfunctioning