DTC P0300, DTC P0301, DTC P0302, DTC P0303, DTC P0304, DTC P0305 Or DTC P0306: Condition

WARNING: This page is about a different car, the 2002 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 individua1 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.