Checking the components and wiring
Check the intake system for air leakage.
Check the exhaust system for air leakage.
Checking fuel and residual pressure.
Check the compression of the engine.
Remedy as necessary.
NOTE:
Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.
Other information
- See Check for air leaks in the intake system
- See Checking for air leakage in the exhaust system
- See Checking fuel and residual pressures
- See Cylinder leakage test
- For B5xx4T -2004, see Replacing the three-way catalytic converter (TWC)
- For B5xx4T 2005-, see Three-way catalytic converter (TWC), replacing
- For B6xx4S 1999-, see Three-way catalytic converter (TWC), replacing
- For B6xx4S 2000-, see Three-way catalytic converter (TWC), replacing
- For B6xx4T -2001, see Three-way catalytic converter (TWC), replacing
- For B6xx4T 2002-, see Three-way catalytic converter (TWC), replacing .
- Continue
Refer to Verification