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Home >> Buick >> 1995 >> LeSabre Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM/Pcm Code Charts >> DTC P0134: Heated Oxygen Sensor Open Circuit >> Test Description
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Test Description

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. If conditions necessary to set Code P0132 exist, system will not go into closed loop.
  2. This will determine if sensor or wiring is cause of Code P0134.
  3. This test checks continuity in reference circuit.
Fig 1: Code P0134 Schematic (3.8L) Heated Oxygen Sensor Open Circuit
G95C13815
Fig 2: Code P0134 Flow Chart (3.8L) Heated Oxygen Sensor Open Circuit
G95F13818