P0551 Volvo Power Steering Pressure Sensor Circuit Range/Performance

P0551 Volvo Power Steering Pressure Sensor Circuit Range/Performance

Possible causes
– Faulty Power Steering Pressure Sensor
– Power Steering Pressure Sensor harness is open or shorted
– Power Steering Pressure Sensor circuit poor electrical connection
What about the obd code?
An out of range voltage from the Power Steering Pressure Sensor is sent to Engine Control Module (ECM).
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Power steering inoperative
P0551 Volvo Description

Power steering pressure (PSP) sensor is installed to the power steering high-pressure tube and detects a power steering load. This sensor is a potentiometer which transforms the power steering load into output voltage, and emits the voltage signal to the Engine Control Module (ECM). The ECM controls the electric throttle control actuator and adjusts the throttle valve opening angle to increase the engine speed and adjusts the idle speed for the increased load.

Volvo Vehicle:Volvo C70,Volvo S40,Volvo XC90,Volvo XC70,Volvo XC60,Volvo V70,Volvo V50,Volvo V40,Volvo S90,Volvo S80,Volvo S60
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