P0510moderate severityPowertrain
Closed Throttle Position Switch
on 2017 Audi S5 3.0L Supercharged V6 · AWD
What this code means
The closed throttle position switch is not reading correctly. The PCM can't verify when the throttle is fully closed at idle.
Symptoms
- Check engine light on
- Rough or unstable idle
- Poor throttle response
Common causes
- Faulty closed throttle position switch
- Dirty or worn throttle body
- Wiring or connector fault
- Misadjusted throttle switch
Diagnostic steps
- Scan throttle position data
- Inspect throttle switch and connector
- Verify closed throttle signal at idle
- Test switch wiring for opens or shorts
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