T8 / P0551 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: No load compensation for power steering.
Higher idling speed.
Power Steering Pressure Switch Performance Problem
Fault symptom
No load compensation for power steering.
Higher idling speed.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Battery voltage must be between 11 - 16 V. |
Fault criteria:
| Status change for the power steering pressure switch has occurred for a duration of 600 s when vehicle speed has been higher than 50 km/h (31 mph). |
Dependent:
System reaction to a fault:
| Control module continues working with the higher idling function. |
OK report:
| Status change for the power steering pressure switch has occurred. |
Fault handling:
| Type III without Check Engine. |
| (See section Fault handling III, "Other emission-related components and functions" for more information.) |
Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.
Diagnostic help
Diagnosis regards:
| Electrical fault in connecting leads or component. |
Functions in the diagnostic tool related to the fault:
| • | Power Steering Pressure Switch |
| (See also description of readings/activations in diagnostic tool) |
