P0551low severityPowertrain
Power Steering Pressure Sensor Circuit Range/Performance
on 2000 BMW X5 4.4i E53 4.4L V8 M62 · AWD
What this code means
The power steering pressure sensor signal is outside its expected range. This sensor informs the PCM about steering load so it can adjust idle speed.
Symptoms
- Idle fluctuation when steering
- Check engine light on
- Rough idle at low speed
Common causes
- Faulty power steering pressure sensor
- Low or contaminated power steering fluid
- Wiring or connector fault
- Restricted power steering hose
Diagnostic steps
- Read sensor data with scan tool
- Compare signal to steering load
- Check fluid level and condition
- Inspect wiring and connector
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Other Powertrain codes on this vehicle
29CC
Misfire Cylinder 1
29CD
Misfire Cylinder 2
29CE
Misfire Cylinder 3
29CF
Misfire Cylinder 4
29D0
Misfire Cylinder 5
29D1
Misfire Cylinder 6
29D2
Misfire Cylinder 7
29E0
Lambda Additive/Idle Adaptation Limit, Bank 1
29E1
Lambda Additive/Idle Adaptation Limit, Bank 2
29E2
Lambda Multiplicative Part-Load Adaptation Limit, Bank 1