P0140 - Regular Test (2) Chevrolet Uplander I

1. During the regular test, the HO2S 2 voltage is between 390-520 mV for at least 1,080 out of 1,200 samples.
2. Each sample is 100 ms during both tests.
3. This diagnostic runs once per trip.

Action Taken When the DTC Sets

1. The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
2. The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.