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2001 > Engine > [G6BA] 2.7 DOHC MFI > P1167 O2 Sensor System - Lambda Controller at the Limit (Bank 2) > Inspection/Repair > System Inspection >
System Inspection
Check Intake/Exhaust System for Restriction or Leakage
1.Visually/physically inspect the air leakage in intake/exhaust system as following items.
A.for splits, kinks and improper connections.
B.Throttle body .
C.Gasket between intake manifold and cylinder head.3
D.Seals between intake manifold and fuel injectors.
E.Exhaust system between HO2S and Three way catalyst for air leakage.
2.Visually/physically inspect the restriction in intake/exhaust system as following items.
A.Air cleaner filter element for excessive dirt or for any foreign objects.
B. inlet for damage or for any foreign objects.
C.Throttle bore, throttle plate and the IAC passages for chocking and for any foreign objects.
D.Restricted exhaust system.
3.Was a problem found in any of the above areas? YES ? Replace or repair as necessary and go to "Verification of Vehicle Repair" procedure. NO ? Go to " Check the engine oil contamination " procedure.
Check the Engine Oil Contamination
1.Check the engine oil level. The oil level should be between the min. and max. marking. Fill to the correct oil level.
2.Warm up the engine to normal operating temperature.
3.Connect Scantool and note the "SHORT TERM FUEL-B2" parameter on the Scantool data list.
4.Disconnect and plug the positive crankcase ventilation.
5.Monitor the "SHORT TERM FUEL-B2" parameter on the Scantool data list once again. Specification : The value should remain more or less unchanged.
6.Is the displayed value within the specified value? YES ? Go to "Sensor Contamination Inspection" procedure. NO ? The engine oil is diluted with fuel. Chang the oil and oil filter and go to "Verification of Vehicle Repair" procedure.
Sensor Contamination Inspection
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