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I have a 2005 pt cruiser with the check engine light on. I…

I have a 2005...

I have a 2005 pt cruiser with the check engine light on. I found on youtube how to get the error code which is P0420. What does the error code mean?

Mechanic's Assistant: Does the light stay on, or does it blink?

Stays on

Mechanic's Assistant: Are you fixing your PT Cruiser yourself? What have you tried so far?

Have tried nothing. It failed an inspection cuz of the check engine light. I would like to know why the light is on.

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Answered in 5 minutes by:
12/14/2017
Mike V.v
Mike V.v, Technician
Category: Chrysler
Satisfied Customers: 27,773
Experience: 25 years automotive experience all makes and models, Subaru and Nissan factory trained.
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This code means the catalytic converter is not cleaning the exhaust as well as it should. Most of the time it means the converter needs to be replaced. It's also possible the car is not burning as clean as it should and needs a tune-up or that the rear O2 sensor isn't reading properly. In most cases however, it takes a new converter to resolve the code.

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Experience: 25 years automotive experience all makes and models, Subaru and Nissan factory trained.
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