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I ran a check engine test and got 2 codes.

P0171 & P0174
Bank 1 & 2 lean
Do i need to clean or replace my mass air flow sensor? Please help, Thank you.
Are we expected to guess what vehicle and engine comvination you have?

Also a copy of a scan log would be a great help.
 

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Registered
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117 Posts
I ran a check engine test and got 2 codes.

P0171 & P0174
Bank 1 & 2 lean
Do i need to clean or replace my mass air flow sensor? Please help, Thank you.
As said, a post of the scan and vehicle details would be helpful. MAF is a "no brainer" because it costs nothing and is easy to try (make sure you use a proper MAF cleaner), other than this it could be a number of things from a clogged fuel filter all the way up to dodgy injectors or a failing high presure fuel pump.
 
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