Code P0420.
Mar 26, 2022 at 4:44 AM
Code P0420, where is the Oxygen sensor located?
2006 CHEVROLET MALIBU
ANTHONY WOODWORTH
- MEMBER
- 1 POST
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P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
These drawings show the locations of the two oxygen sensors for the 2.2L engine.
Be aware to set fault code P420 requires two properly working sensors. They're just messengers. You won't fix anything by replacing them. If I can help you further, please let me know, and provide some details or observations, or let me know if you solve the problem. Most likely the catalytic converter will need to be replaced.
These drawings show the locations of the two oxygen sensors for the 2.2L engine.
Be aware to set fault code P420 requires two properly working sensors. They're just messengers. You won't fix anything by replacing them. If I can help you further, please let me know, and provide some details or observations, or let me know if you solve the problem. Most likely the catalytic converter will need to be replaced.
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Professional Diagram for 2CarPros Members
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Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Click here to log in and view diagram.
Mar 26, 2022 at 6:37 AM
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