This bulletin applies to 2012 Acura RDX models. If the throttle body was recently cleaned or replaced, DTC P2279 (intake air system leak) or P0507 (idle control system rpm higher than expected) and a fluctuating idle exists, it’s likely that the throttle plate is now in a different position from the one that the PCM/ECM had previously learned. To fix the problem, the ECM/PCM must be relearned to the new throttle plate position.
Honda Needs Schooling
If, after cleaning or replacing the throttle body on a 2013 Honda Odyssey, you now have a fluctuating idle, MIL on with DTC P2279 (intake air system leak) or MIL on with P0507 (idle control system rpm higher than expected), the condition is likely caused by the throttle plate being in a different position from the position that the ECM/PCM had previously learned.