Test Description

WARNING: This page is about a different car, the 1995 Oldsmobile Ninety-Eight and 1995 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Test numbers refer to numbers on diagnostic chart.

If conditions necessary to set Code P0132 exist, system will not go into closed loop.
This will determine if sensor or wiring is cause of Code P0134.
This test checks continuity in reference circuit.

Fig 1: Code P0134 Schematic (3.8L) Heated Oxygen Sensor Open Circuit

Fig 2: Code P0134 Flow Chart (3.8L) Heated Oxygen Sensor Open Circuit