P0393moderate severityPowertrain
Camshaft Position Sensor B Circuit High Input (Bank 2)
on 2022 Audi SQ7 4.0L Twin-Turbo V8 · AWD
What this code means
The PCM reads an abnormally high voltage from the Bank 2 camshaft position sensor B. This often points to a short to voltage or an open ground.
Symptoms
- Hard starting
- Rough running
- MIL illuminated
Common causes
- Short to voltage in wiring
- Faulty camshaft position sensor
- Open sensor ground
- Corroded connector
Diagnostic steps
- Retrieve codes and freeze frame
- Measure sensor signal voltage
- Inspect for short to power and ground integrity
- Replace sensor or repair harness
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