jster28

So my engine check light came on. I had the code read at autozone and it was P0171/ air fuel metering. What is that? is it my MAF or is my intake moving to much air. Helpp.

vtaero

I am not sure what exactly could be causing this code, however I looked it up in my scan tool and it said "System too Lean (Bank 1)". Someone else more familiar with it will have to answer why. Hope that helps a little.

dewey

Possible causes:

Misfire
HO2S (front) deterioration
HO2S (front) heater malfunction
PRC solenoid valve malfunciton
pressure regulator malfunction
fuel pump malfunction
fuel filter clogged or restricted
fuel leakage on fuel line from fuel delivery pipe and fuel pump
fuel return hose clogged
leakage from exhaust system
purge solenoid valve malfunction
purge solenoid hoses improper connection
insufficient compression


Diagnostic actions:

inspect air intake ducting from filter to throttle body
replace MAF sensor
check fuel pressure
check vacuum hoses
inspect fuel lines
inspect fuel injectors

macdaddyslomo

more than likely your MAF is bad...should be warranteed tho...mazda extended the factory warranty on 1.6L Maf's