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6E–242 ENGINE DRIVEABILITY AND EMISSIONS the condition that caused the DTC to be set occurs. This Test Description Number(s) below refer to the step number(s) on the indicates probable contamination. To avoid 5. This step checks for conditions which may cause the heated oxygen sensor to appear faulty. Correct any 8. To avoid damaging replacement sensors, correct the condition which caused the contamination before DTC P1154 – HO2S Transition Time Ratio Bank 2 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 other DTCs are set (except P1133 1. Idle the engine at operating temperature. under “Conditions for Setting the DTC” criteria 3. Using a Tech 2, monitor “Specific DTC” info for DTC P1154 until the DTC P1154 test runs. Note the test result. Does Tech 2 indicate DTC failed this ignition? — Go to Step 3 Refer to Diagnostic Aids 3 Did Tech 2 also indicate P1133, and/or P1134 test — Go to Step 17 Go to Step 4 4 Check for leaks at the pipe joints. Are the joints leaking? — Go to Step 5 Go to Step 6 5 Tighten the U-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 11 Replace the exhaust pipes, as required. Is your action complete? — Go to Step 2 — |