VOLVO
ECM-0551 - Power steering. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerS40 (1996–2004), V40 (1996–2004)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
The engine control module monitors the pressure sensor in the power steering. If the signal is too low when the steering wheel is turned at high engine speed and high engine load for a set time, the fault is set. The cause may be a signal wire shorted to ground, or a defective pressure sensor.
Mulige årsaker
- Signal wire short-circuited to ground
- Defective power steering pressure sensor
Hva du kan gjøre
- 1Read out the fault code, erase it and road-test with the steering wheel turned to different positions to see whether it returns
- 2If you have a diagnostic tool, read the pressure sensor value in live data with the engine idling and check that it changes when the wheel is turned
- 3Switch off the ignition and check the sensor connector for looseness, contact resistance and oxidation
- 4On cars with hydraulic power steering, check that the fluid level is correct and look for leaks at the pump and hoses
- 5Because steering is a safety function, have a workshop check the pressure sensor and its signal wire if the fault remains
Symptomer du kan merke1
- The malfunction indicator lamp (MIL) is lit
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