Monday, April 30, 2012

2001 Toyota Camry:Catalyst System Efficiency Below Threshold Bank 1?

This is indication Detail for Error Code P0420.

The P0420 code means that the catalytic converter is below the threshold that the factory needs to see in order to meet the environmental requirements. This is not a sensor related issue. Do not allow anyone to talk you into buying oxygen sensors or air fuel ratio sensors. This is strictly a catalytic converter failure. If you do not require an emissions test in order to renew your license plates you can get by with ignoring the check engine light and continuing to drive. This will not harm the engine in any way. It is just a chemical breakdown in the catalytic converter to convert the gases to the required emissions exiting the tailpipe. Some refer to this as the catalytic converters inability to store oxygen. In this cases mostly  the catalytic converter will need to be replaced. Depending on your production and whether it is California emissions are not there are two converters one in the manifold and one in the front pipe.

This details will help.

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