P0554low severityPowertrain
Power Steering Pressure Sensor Circuit Intermittent
on 2017 Audi S5 3.0L Supercharged V6 · AWD
What this code means
The PCM detected an intermittent fault in the power steering pressure sensor circuit. The signal drops out occasionally, affecting idle adjustment during steering.
Symptoms
- Occasional rough idle when turning
- Intermittent check engine light
- Erratic idle behavior
Common causes
- Loose or corroded connector
- Intermittent wiring fault
- Faulty power steering pressure sensor
- Failed PCM input circuit
Diagnostic steps
- Read sensor data and monitor for dropouts
- Wiggle test wiring and connector
- Inspect for corrosion or loose pins
- Test sensor signal stability
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