P0551Low urgency
Power Steering Pressure Sensor Circuit Range/Performance
Chassis · Power Steering
✅ Steering still works. Idle may drop slightly when turning at low speed. Service within a few weeks.
What this means
The power steering pressure sensor signal is not changing correctly in response to steering input. The ECU uses this sensor to raise idle speed when power steering load increases.
Likely causes
- Failed power steering pressure sensorMost common
- Low power steering fluid pressureCommon
- Sensor wiring faultCommon
Estimated repair cost
Power steering pressure sensor$30 – $120
Power steering fluid and inspection$30 – $100
Wiring repair$80 – $200
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Frequently asked questions about P0551
What does P0551 mean?
The power steering pressure sensor signal is not changing correctly in response to steering input. The ECU uses this sensor to raise idle speed when power steering load increases.
Is P0551 serious?
Steering still works. Idle may drop slightly when turning at low speed. Service within a few weeks.
How much does it cost to fix P0551?
Repair costs for P0551 range from $30 – $120 depending on the root cause and your vehicle.
Can I drive with P0551?
Yes, the vehicle is safe to drive. Schedule a repair at your convenience.