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Home >> Toyota >> 1996 >> RAV4 2D Utility, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Tests W/Codes >> Circuit Tests >> DTC P0136 - Oxygen Sensor Circuit (Sensor No. 2) >> Diagnosis & Repair
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Diagnosis & Repair

  1. If any other codes are displayed other than DTC P0136, diagnose and repair those codes first. If only DTC P0136 is displayed, inspect circuits between ECM and sensor for opens or shorts. See appropriate wiring diagram in WIRING DIAGRAMS article. Repair as necessary.
  2. If all circuits are okay, connect scan tester. See Figure. Start and warm engine to normal operating temperature. Monitor sensor No. 2 output voltage. Snap accelerate engine 3 times. Voltage should fluctuate from .4-.5 volt or more.
  3. If voltage responds correctly, inspect harness connection. Problem may be intermittent. If voltage does not respond correctly, replace sensor and retest.
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