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DTC P0138, P0158 HO2S2 EC-849 < SERVICE INFORMATION > [VK45DE] C D E F G H I J K L M A EC N P O 2. Disconnect heated oxygen sensor 2 harness connector. 3. Disconnect ECM harness connector. 4. Check harness continuity between HO2S2 terminal 4 and ECM terminal 78. 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check harness continuity between ECM terminal and HO2S2 terminal as follows. 2. Check harness continuity between the following terminals and ground. 3. Also check harness for short to power. OK or NG OK >> GO TO 5. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 5. CHECK HEATED OXYGEN SENSOR 2 EC-850, "Component Inspection" OK or NG OK >> GO TO 6. NG >> Replace malfunctioning heated oxygen sensor 2. 6. CHECK INTERMITTENT INCIDENT Continuity should exist. PBIB1534E DTC Terminals Bank ECM Sensor P0138 55 1 1 P0158 74 1 2 Continuity should exist. DTC Terminals Bank ECM Sensor P0138 55 1 1 P0158 74 1 2 Continuity should not exist. |