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Ford Sable O2 sensor issue

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emqz
New User

Mar 25, 2013, 1:20 PM

Post #1 of 4 (1250 views)
Ford Sable O2 sensor issue Sign In
I had a code checker hooked up to my car and it came back with a P0420 code that also read "catalyst system efficiency bellow threshold Bank 1" after researching this I found that this is usually caused by having a bad O2 sensor. I just wanted to make sure that this is most likely the issue. The code reader did not say anything about a bank 2 lean which I assume means that there is a leak in the lines and is drawing air from somewhere else. Could anyone please advise?

(This post was edited by emqz on Mar 25, 2013, 1:24 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 25, 2013, 1:35 PM

Post #2 of 4 (1239 views)
Re: Ford Sable O2 sensor issue Sign In
No, it's not caused by a bad 0/2 sensor. 99% of the time it is a used up Catalytic Converter.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Mar 25, 2013, 1:41 PM

Post #3 of 4 (1229 views)
Re: Ford Sable O2 sensor issue Sign In
Ford Sable? Which year? OHV or OHC?



Quote
The code reader did not say anything about a bank 2 lean which I assume means that there is a leak in the lines and is drawing air from somewhere else.
Did it or did it not? Bank 2 lean would be P0174





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Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 25, 2013, 1:50 PM

Post #4 of 4 (1216 views)
Re: Ford Sable O2 sensor issue Sign In
P0420 is a Bank 1 code anyway.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.






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