P0551: Power Steering Pressure Sensor Circuit Range/Performance
What does P0551 mean?
P0551 is a diagnostic trouble code indicating "Power Steering Pressure Sensor Circuit Range/Performance". The sensor or component is providing readings, but they fall outside the expected operating range. The part may be degraded, contaminated, or experiencing intermittent issues affecting idle control performance.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Intermittent warning lights
- Erratic gauge readings
Estimated repair cost
Typical range in Australia (parts + labour)
Common causes
- Worn or contaminated idle control component
- Vacuum leak or intake air leak
- Clogged filter or restricted flow
- Intermittent electrical connection issue
What should you do?
This code sits in the steering system. Power assistance can cut out without warning, which makes the wheel go heavy, usually worst at parking and low speeds. Steering itself does not disappear, but the effort changes suddenly. Get it diagnosed before driving.
Get a diagnosis for YOUR car
Code P0551 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.