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Hi All

I have had the engine light on for some time and i went to get a smog check today.
the guy check the codes and gave me a printout of the above codes that are causing the engine light.

Can someone help give me any feedback or help as to whether the first and last are related?
any tips on fixing it? what they mean?

P0141: Manf Specific code
P0457: EVAP control system leak detected (fuel cap)
P0171: System too lean (Bank 1)

any help would be greatly appreciated.


2002 Ford Focus ZX5
 

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Fix the 457 code and then see what shows up after that, it will answer your question. Either first or second code can cause the last and the 141 can even be a standalone issue.
 
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