KlaroFault codeP0552
MODERATEPower Steering Pressure Sensor Circuit Low Input
What this code means
Power Steering Pressure Sensor Circuit Low Input.
P0552 is a generic code: it means the same thing on every make. P0552 belongs to family P05xx — Idle speed and vehicle speed control. Its page explains how to read a code and groups all its codes by part.
Type of fault
The control unit reads a voltage on this circuit below its expected range. Usual causes: a wire shorted to ground or broken, a corroded or loose connector, or the component itself. Check the wiring and connector before replacing the part — that is where many of these faults turn out to be.
Power steering pressure sensor
On hydraulic power steering, this sensor or switch detects the pressure when you turn the wheel. The control unit raises the idle speed slightly to compensate for the load of the pump.
What you notice
Idle speed dipping or the engine stalling when turning the wheel at low speed, during parking.
How to check it
Check the power steering fluid level and look for leaks, then the sensor's connector on the high-pressure pipe. In Klaro, turning the wheel at idle should make the engine speed dip briefly and recover.
What to do
Have it checked this week. The car remains usable, but the fault will not clear itself and will fail the roadworthiness test.
Clearing a code switches the light off but repairs nothing: if the fault remains, the code comes back. Clearing a fault code yourself →
How to read this code
- PPowertrain
- 0standardised code
- 5Idle speed and vehicle speed control
- 52P0552
