BMW P0507 Code — Idle Speed Too High (Diagnosis and Fix)
The P0507 code on your BMW means the idle speed is higher than expected.
What It Means
The engine is getting too much air or idle control is incorrect.
👉 Result:
- high idle RPM
- unstable engine
- increased fuel consumption
Common Causes
1. Vacuum Leak
Most common cause.
2. Dirty Throttle Body
3. Idle Control Valve Issues
- stuck
- malfunctioning
4. Faulty TPS Sensor
- incorrect readings
- unstable signal
5. ECU Issues
- adaptation problems
- reset needed
DIAGNOSIS
1. Vacuum Leak Test
2. Throttle Body Inspection
- clean if dirty
- perform adaptation
3. TPS Test (Multimeter)
- ~0.5V idle
- ~4.5V full throttle
4. OBD2 Monitoring
- idle RPM
- throttle position
5. ECU Reset
- reset adaptations
- relearn throttle