Conditions For Running DTC

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0016, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0125, P0128, P0315, P0335, P0336, P0341, P0502, P0503, P1114, P1115, or P1121 are not set.
Then engine speed is between 450-5000 RPM.
The ignition voltage is between 10-18 volts.
The Engine Coolant Temperature (ECT) is between 19-266° F (-7-130° C).
The fuel level is more than 10 percent.
The throttle angle is steady within 1 percent.
The Anti-Lock Brake System (ABS) and the Traction Control System (TCS) are not active.
The transmission is not changing gears.
The A/C clutch is not changing states.
The PCM is not in fuel shut-off or decel fuel cut-off mode.
The PCM is not receiving a rough road signal.