Some vehicles may exhibit an engine misfire during acceleration with the check engine light flashing and the following DTC(s). P0302:00 - Cylinder No.2 misfire detected and/or P0303:00 - Cylinder No.3 misfire detected NOTE: Even if a misfire occurred, the DTCs may not be stored because they are set after the continuous misfire occurred for 2 drive cycles. In this case, check if the following information is available to verify if the vehicle is applicable to this Service Information. The customer states that the misfire occurred and at the same time the check engine light started flashing. DTC U0401:00 ((ABS) Signal error from PCM) is detected.This concern may be caused if the exhaust manifold variable valve shaft (1) is out of alignment and/or the exhaust manifold variable valve housing (2) is out of shape. The exhaust manifold variable valve (3) then interferes with the housing and becomes stuck closed when the engine is hot. To eliminate this concern in the future, the production processes and controls have been improved.
