P0551

Power Steering Pressure Sensor/Switch Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Increased steering effort
Check Engine Light Illuminates
Floating or uneven idle speed
Unstable power steering operation

Causes

Power steering pressure sensor malfunction
Open or short circuit in the sensor wiring harness
Poor contact in the sensor connector
Low power steering fluid level
Power steering pump malfunction

How to Fix

Check power steering fluid level
Visually inspect the wiring harness and sensor connectors
Check resistance and voltage at power steering pressure sensor
Replace power steering pressure sensor if necessary
Clear error memory and check system

Related codes

P0550 P0552 P0553