Diagnostic Aids

Check and repair plugged sensor air vent hole. If multiple DTCs are set, reference voltage circuit may be open or shorted, or ground circuit may be open.

An intermittent malfunction may be caused by a poor connection, rubbed-through wire insulation, or a wire broken inside insulation. Inspect harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, or poor terminal-to-wire connections before component replacement.