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 running for more than 200 seconds.
Engine speed is 2350-3000 RPM for M/T or 1800-2300 RPM for A/T.
ECT more than 158°F (70°C).
TP angle 15-50 percent.
System in closed-loop.
EVAP purge is commanded to 80 percent or greater.
Fuel level is more than 10 percent.
No CKP, ECT, EVAP, fuel injector, fuel tank pressure, fuel trim, IAT, idle speed, MAP, misfire, ECM internal fault or TP sensor DTCs are set.

DTC sets when average response time of lean to rich switches is more than 730 milliseconds (A/T), 625 milliseconds (M/T); or average response time of rich to lean switches is more than 1200 milliseconds (A/T) or 975 milliseconds (M/T): or sum of the lean-to-rich and rich-to-lean average response times is greater than 1200 ms (A/T), or 975 ms (M/T). Condition exists for longer than 30 seconds.