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Subjects>Auto>Asian Cars

How do you repair code p0420?

Anonymous

∙ 13y ago

Updated: 10/20/2022

Fix any exhaust leaks, test/replace the oxygen sensors, replace the catalytic converter.

Wiki User

∙ 13y ago

What else can I help you with?

Related Questions

How do you repair a P0420 trouble code?

For 1996 and newer Trouble code P0420 means:Catalyst system efficiency below threshold (bank 1)

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Trouble code P0420 means:Catalyst system efficiency below threshold

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Trouble code P0420 means:Catalyst system efficiency below threshold

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Trouble code P0420 means:Catalyst system efficiency below threshold

My F0rd F150 truck failed inspection with this code P0420. What does this code-P0420 mean?

Catalytic converter efficiency failure.

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