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6E2–215 RODEO 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS f DTC P0161 can be cleared by using the Tech 2 “Clear Diagnostic Aids Check for the following conditions: f Poor connection at PCM – Inspect harness connectors f Damaged harness – Inspect the wiring harness for Reviewing the Failure Records vehicle mileage since the Test Description Number(s) below refer to the step number(s) on the 2. The HO2S should be allowed to cool before performing this test. If the HO2S heater is 4. This ensures that the ignition feed circuit to the HO2S is not open or shorted. The test light should 5. This checks the HO2S heater ground circuit. 6. This checks for an open or shorted HO2S heater element. 11.An open HO2S signal or low circuit can cause the HO2S heater to appear faulty. Check these circuits DTC P0161 –HO2S Heater Circuit Bank 2 Sensor 2
Step Action Value(s) Yes No 1 Was the “On-Board Diagnostic (OBD) System Check” — Go to Step 2 Go to OBD System Check 2 NOTE: If the engine has just been operating, allow the 1. Remove the fuel pump relay. socket, between the battery positive at the relay and 3. Ignition “OFF.” minutes. Did the HO2S voltage go from bias voltage to above or Above 650 mV or Below 250 mV Refer to Diagnostic Aids Go to Step 3 3 Inspect the fuse for the Bank 2 HO2S 2 ignition feed. Is the fuse open? — Go to Step 15 Go to Step 4 4 1. Ignition “OFF.” (do not use Bank 2 HO2S 2 heater ground or Bank 2 Does the test light illuminate? — Go to Step 5 Go to Step 7 |