DTC Parameters

WARNING: This page is about a different car, the 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Engine speed of 540 RPM has been reached at least once and six combustion events have passed.
Engine speed is 520-6520 RPM.
IAT is greater than -22°F (-30°C).
Engine speed change is less than 1200-3300 RPM/s depending on engine load.
ABS stop is not active.
Fuel cutoff is not active.
Rough road is not detected.
Traction control is not active.
No CAM, CKP, EVAP purge solenoid or TP sensor DTCs have been set.

DTC sets if specific or random cylinder misfires have been detected after a 1000 revolution test(s) when the sum of the misfire counts are greater than 34 in the first 1000 engine revolution test; or greater than 34 misfire counts in four different 1000 revolution tests throughout the drive cycle after the first 1000 engine revolutions have passed.

NOTE: ECM must complete the entire 1000 revolutions before DTC P0300 will set.