P1545high severityPowertrain
Throttle Position Control Malfunction
on 2009 Audi TT 3.2L V6 · AWD
What this code means
The ECU detected that the electronic throttle body is not achieving the commanded position. The actual throttle opening deviates from the target by more than the allowable tolerance.
Symptoms
- Check Engine Light
- Reduced power mode
- Throttle response sluggish
- Engine may stall
- EPC warning light on
Common causes
- Carbon buildup on throttle plate
- Faulty throttle body motor
- Throttle position sensor fault
- Wiring issue
- ECU throttle driver failure
Diagnostic steps
- Perform throttle body adaptation/basic setting
- Clean throttle body
- Test throttle motor by commanding positions
- Check wiring and connector
- Monitor commanded vs actual throttle position
Repair notes
Clean throttle body and perform adaptation; replace if motor has failed.
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