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codes from OBD2 scanner for 03 ford f150


armin922

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ok so my buddies truck which is an 03 ford f150 V6 check engine light came on. We go to autozone to get it scanned and 2 codes came up. P1151 and P1131. This is what came up on the receipt from autozone when they printed this out for us. Im going to try to clean his MAF with MAF cleaner and see if it will clean it bc im thinking it may be dirty. His truck has 60k miles on it. And also check for vaccum leaks. If those dont work maybe the 2 upper o2 sensors on each header needs to be replaced?

 

P1151-Lack of 02 switches-bank 2 sensor 1. Could not adjust fuel trim because of lean or rich condition

 

Probable cause:

fuel pressure high or low

MAF sensor dirty/defective

Vaccum Leak on engine

Leaking fuel injector or fuel pressure regulator

 

P1131 lack of bank 1 o2 transitions-lean. detected bank 1 o2 at its lean limit.

 

Probable cause:

misfire on bank 1

Vaccum Leak affecting bank 1 only

Fuel Injector problem bank 1

Engine mechanical condition

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check fuel pressure, check for vacuum leaks.

 

plus autozones code reader, wont pull out all the codes. just went thru this the other day. when pulling codes from a ford, there are several ways it need to be done.

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auto zone dont have any thing more then a cheap scanner.

 

 

is there no valve on the fuel rail(its rather small) to hook up a pressure gauge too?

 

and on that one, you can read fuel pressure in the data stream on a good scan tool

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