Diagnostic Aids

Intermittent DTCs P0251, P0370 and P1216 may be caused by air entering fuel system when fuel level is less than 1/8 tank while performing hard acceleration or turning maneuvers. If vehicle runs out of fuel, DTCs P0251, P0370 and P1216 will set. If vehicle has been operating under these conditions, bleed air from fuel system and test drive vehicle. If any other DTCs are set with DTC P1216, diagnose other DTCs first. If vehicle is running close to DTC setting closure time, vehicle should be checked during cold start-ups and during hot conditions.