DTCS P0300, P0301, P0302, P0303, P0304, P0305 Or P0306: Misfire Detected: Condition

WARNING: This page is about a different car, the 2003 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0300 sets when misfire which causes catalyst to overheat during 200 crankshaft revolutions is detected at 2 or more cylinders (MIL flashes as long as misfire occurs). When ECM detects a misfire (misfire rate per 1000 revolutions) which will not cause damage to TWC, but could cause exhaust emission deterioration. ECM will illuminate MIL when it detects malfunction during 2 consecutive drive cycles.

DTC P0301, P0302, P0303, P0304, P0305 or P0306 sets when misfire which causes catalyst to overheat during 200 crankshaft revolutions is detected at any individual cylinder (MIL flashes as long as misfire occurs). When ECM detects a misfire (misfire rate per 1000 revolutions) which will not cause damage to TWC, but could cause exhaust emission deterioration. ECM will illuminate MIL when it detects malfunction during 2 consecutive drive cycles.