P1078 OBD Code Definition:
P1078 Intake Manifold Runner Control Valve Long Stuck
P1078 OBD Code Description:
Possible causes
– Faulty Intake Manifold Runner Control (IMRC) Valve
– IMRC Valve harness is open or shorted
– IMRC Valve circuit poor electrical connection
– IMRC Valve harness is open or shorted
– IMRC Valve circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)