BMW Engine Fault Codes
Idle, throttle adaptation, general engine running issues.
3 codes in this category.
P0507Idle Air Control RPM Higher Than ExpectedIdle RPM too high - vacuum leak or stuck throttle plate.low274CThrottle Valve Adaptation Lower LimitThrottle body not closing fully - usually carbon buildup.moderate274DThrottle Valve Adaptation Upper LimitThrottle plate stuck open - similar to 274C.moderate