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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 101 (Engine Control System Self-Diagnostics - 3.4L) >> Diagnostic Tests >> DTC P0030: Ho2S Heater Control Circuit (Sensor 1) >> Conditions For Clearing MIL/DTC

Conditions For Clearing MIL/DTC

WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, 2002 Chevrolet Monte Carlo, and 2002 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

The PCM turns OFF the MIL lamp after 3 consecutive ignition cycles that the diagnostic runs and passes. A current, DTC last test fails, clears when the diagnostic runs and passes. A DTC stored in history clears after 40 warm-up cycles, if no failures are reported by this or any other emission related diagnostic. A scan tool can be used to clear the DTC.

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