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Home/Isuzu/Oasis/Isuzu Oasis I (1995-1999)/Repair manual/Testing & Diagnostics/DTC P0132 - PRIMARY HO2S-1 SENSOR HIGH VOLTAGE
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DTC P0132 - PRIMARY HO2S-1 SENSOR HIGH VOLTAGE Isuzu Oasis I

Testing & Diagnostics ~245 words
  1. Perform PCM reset procedure. See «TESTS W/CODES - INTRODUCTION»(ref-16345) article. Start engine and run at 3000 RPM with no loads and transmission in Park or Neutral until radiator fan comes on. Road test vehicle with transmission in "2" position (A/T). Using OBD-II scan tool, check HO2S-1 output voltage during deceleration using fully closed throttle. If voltage stays at one volt or more, go to next step. If voltage does not stay at one volt or more, problem is intermittent. System is okay at this time. Check for poor connections or loose wires between HO2S-1 and PCM connectors.
  2. Turn ignition off. Disconnect HO2S-1, 4-pin connector. Connect a fused jumper wire between HO2S-1 harness connector terminals No. 1 (White wire) and No. 2 (Green/Black wire). (Схема №8) Turn ignition on. Using OBD-II scan tool, check HO2S-1 output voltage. If output voltage is one volt or more, go to next step. If output voltage is not one volt or more, replace HO2S-1.
  3. Turn ignition off. Connect a fused jumper wire between PCM 31-pin connector "C" terminal C16 (White wire) and terminal C18 (Green/Black wire). Turn ignition on. Using OBD-II scan tool, check HO2S-1 output voltage. If output voltage is one volt or more, repair open in White wire between PCM and HO2S-1. See WIRING DIAGRAMS article. If output voltage is not one volt or more, substitute a known-good PCM and recheck. If symptom or indication goes away, replace original PCM.

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