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6E–356 6VE1 3.5 ENGINE DRIVEABILITY AND EMISSIONS Diagnostic Aids A malfunction in the HO2S heater ignition feed or ground Test Description Number(s) below refer to the step number(s) on the 3. A condition that affects other heated oxygen sensors indicates probable contamination. To avoid 5. This step checks for conditions which may cause the heated oxygen sensor to appear faulty. Correct any 11.To avoid damaging replacement sensors, correct the condition which caused the contamination before DTC P1133 – HO2S Insufficient Switching 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 IMPORTANT: If any DTCs are set (except P1153 or 1. Engine idling at operating temperature. under “Conditions for Setting the DTC” criteria 3. Using a Tech 2, monitor “DTC” info for DTC P1133 until the DTC P1133 test runs. 4. Note the test result. Does the Tech 2 indicate DTC P1133 failed this — Go to Step 3 Check the Procedure Refer to Diagnostic Aids 3 Did the Tech 2 also indicate that the P1153 or P1154 — Go to Step 20 Go to Step 4 4 Check for leaks at the exhaust pipe joints. Are the joints leaking? — Go to Step 5 Go to Step 6 5 Tighten the bolt/nuts at the leaking joints. Is your action complete? — Go to Step 2 — 6 Check for gaskets that are damaged or improperly Are there damaged or misaligned gaskets? — Go to Step 7 Go to Step 8 7 1. Replace the damaged gaskets. Is your action complete? — Go to Step 2 — 8 Check for loose exhaust flange connections. Are the flange connections loose? — Go to Step 9 Go to Step 10 9 Tighten the stud nuts or bolts to specifications. Is your action complete? — Go to Step 2 — 10 Check for burned or corroded exhaust pipes. Are the exhaust pipes burned or corroded? — Go to Step 11 Go to Step 12 |