P0171 code bank 1 running lean...

[frosst421]

So I've been getting my 04 DTR up to show quality and havnt driven it in a whial then the other day I decided to take a leisurely stroll in er and everything went to ****... engine started running very rough,the check engine light came on with this code

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[fastblackmerc]

So I've been getting my 04 DTR up to show quality and havnt driven it in a whial then the other day I decided to take a leisurely stroll in er and everything went to ****... engine started running very rough,the check engine light came on with this code

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You obviously have access to the internet..... lookup the code.

HINT: search for "ford P0171"

[RubberCtyRauder]

Unfortunately, the code does not pinpoint a specific cause, could be anything from, dirty maf,to bad injector,to vacuum leak, bad 02 sensor, fuel rail pressure, and more.

[93Cobra#2771]

Lean bank one typically indicates a vacuum leak. That's where I'd start.


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[fastblackmerc]

Unfortunately, the code does not pinpoint a specific cause, could be anything from, dirty maf,to bad injector,to vacuum leak, bad 02 sensor, fuel rail pressure, and more.

Correct and the OP can check each of them out.

[RubberCtyRauder]

bank 1 is passenger side do would check boots at pcv, they get brittle and crack causing vac. leak

[Mr. Man]

bank 1 is passenger side do would check boots at pcv, they get brittle and crack causing vac. leak
This is a good place to start.