P0552low severityPowertrain
Power Steering Pressure Sensor Circuit Low Input
on 2011 Audi Q7 3.0L Supercharged V6 · AWD
What this code means
The PCM detected a low voltage signal from the power steering pressure sensor. This sensor helps adjust idle when the steering system loads the engine.
Symptoms
- Rough idle when turning
- Check engine light on
- Possible stalling
Common causes
- Short to ground in sensor wiring
- Faulty power steering pressure sensor
- Corroded connector
- Failed PCM input circuit
Diagnostic steps
- Read sensor voltage with scan tool
- Inspect wiring for shorts to ground
- Check connector for corrosion
- Test sensor with known good reference
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