When the engine is started for the first time after parking the vehicle overnight in cold conditions (below 32 degrees Fahrenheit/0 degrees Celsious). Some vehicles may exhibit a rough idle and/or the check engine light on with any of the following DTC(s) stored in memory. *P0300 - Random misfire detected *P0301-Cylinder No.1 misfire detected *P0302 Cylinder No.2 misfire detected *P0303-Cylinder No.3 misfire detected *P0304 Cynlinder No.4 misfire Detected This may be caused by frozen water accumulated in the main silencer, restricting exhaust flow. Customers having this cocern should have their vehicle repaired using the ffollowifng repair procedure.
