Measured idle RPM is higher than the commanded idle.
SYMPTOMS
- Check-engine light
- High idle
- Poor idle quality
LIKELY CAUSES
- Vacuum/intake leak
- Stuck or dirty throttle body
- Faulty throttle body
DIAGNOSIS STEPS
- Smoke-test the intake for leaks
- Inspect/clean the throttle body
- Check idle adaptation in live data
RELATED PARTS
- Throttle body (drive-by-wire)