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6E–146 ENGINE DRIVEABILITY AND EMISSIONS indicates a signal line shorted to ground or signal lines D Intermittent test – With the Ignition “ON,” monitor the Test Description Number(s) below refer to the step number(s) on the Records conditions are being duplicated, an Reviewing the Failure Records vehicle mileage since the DTC P0134 –HO2S Circuit Insufficient Activity Bank 1 Sensor 1
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 1. Install Tech 2. minutes. Does Tech 2 indicate Bank 1 HO2S 1 voltage varying 400-500 mV Go to Step 3 Go to Step 4 3 1. Ignition “ON,” engine “OFF,” review and record Tech 2 Failure Records data and note parameters. 2. Operate the vehicle within Failure Records conditions as noted. 3. Using Tech 2, monitor “Specific DTC” info for DTC P0134 until the DTC P0134 test runs. 4. Note the test result. Does Tech 2 indicate DTC P0134 failed this ignition? — Go to Step 4 Refer to Diagnostic Aids 4 Check for a damaged harness. Was a problem found? — Verify repair Go to Step 5 5 Check for poor Bank 1 HO2S 1 high and low circuit Did any terminals require replacement? — Verify repair Go to Step 6 6 Check for poor Bank 1 HO2S 1 high and low circuit Did any terminals require replacement? — Verify repair Go to Step 7 7 1. Ignition “OFF.” Bank 1 HO2S 1 high circuit. 3. If the Bank 1 HO2S 1 high circuit measures over 5.0 ohms, repair open or poor connection as necessary. Was a Bank 1 HO2S 1 high circuit problem found and — Verify repair Go to Step 8 |