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Roger
Dodge Dakota
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7/13/2005
21:00:07

Subject: Code 420
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I just found out my computer code is P0420. What does catalyst inefficient #1 mean? Do I have to take it into the dealer or will the vehicle run fine doing nothing? I just spent $4100 on a valve problem and I really dont want to spend more money on the vehicle if the problem wont hurt the engine.




Moe
Dodge Dakota
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7/13/2005
23:10:21

RE: Code 420
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Well, depending upon which engine and what year it is, P0420 could mean a bad driver's side downstream O2 sensor, or that the driver's side catalytic converter is no longer functional.
Could mean other things, too.
Depends on engine and year.



Roger
Dodge Dakota
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7/14/2005
01:27:08

RE: Code 420
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Thanks for the info Moe. The vehicle is a 2000 Dodge Durango with the largest V8 available. Any help would be greatly appreciated.



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