P0507: Leerlaufregelung — Drehzahl höher als Sollwert
Leerlaufregelung — Drehzahl höher als Sollwert: Warm curb idle speed remains >150–200 RPM above target despite closed throttle.
| Trouble Code (DTC) | P0507 |
|---|---|
| Official SAE Definition | Leerlaufregelung — Drehzahl höher als Sollwert |
| Vehicle Subsystem | powertrain |
| Driving Severity | LOW |
Observable Symptoms
- High idle speed (950–1,300 RPM when warm)
- Harsh engagement when shifting from Park to Drive
Most Probable Root Causes
- Unmetered vacuum leak downstream of throttle body
- Carbon build-up holding electronic throttle plate slightly open
- Aftermarket throttle body cleaning without electronic idle relearn
Step-by-Step Diagnostic Procedure
- Perform electronic throttle body idle air volume relearn procedure
- Smoke-test intake manifold for vacuum leaks