P0171 Code??? Help

[dewalt25]

Well i hooked my car up to the COMP. and it ran a P0171 code (to lean) BANK1,
what does this mean and where could it come from???? any advice would be great also what can running to lean do to your car?

[dewalt25]

AIR FLOW SENSOR is clean and no access air getting in and it says between 40 and 45 lb/m.

[dewalt25]

Some One Any One Help Me

[mvp8839]

Originally Posted by dewalt25

Some One Any One Help Me

Do you have an exhaust leak? also you said the MAF is clean Did you clean it or does it just look clean? also try cleaning your throttle body.

In the vast majority of cases, simply cleaning the MAF sensor does the trick. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect all vacuum and PCV hoses, replace if necessary
Check for a dirty fuel filter and proper fuel pressure The proprt fuel pressure thisng is the last thing id check.

[dewalt25]

my TB was just cleaned and it looks clean ill tryin cleaning it though! well my car has 16k on it and i never had changed the fuel filter yet

[thedubsack85]

if you have a k and n intake and everything is clean and no leak's with good fuel pressure. its the MAF fail frequency.. with this intake the MAF goes outta the 12k range when WOT.. so retune your car if possible.. raise the MAF fail frequency level to 15k..

[mvp8839]

Originally Posted by dewalt25

my TB was just cleaned and it looks clean ill tryin cleaning it though! well my car has 16k on it and i never had changed the fuel filter yet

shit if your car only has 16K on the clock id take it into the dealership... what mods do you have on the car?

[dewalt25]

anyone who might have any other ideas

[SilverRedLine04]

give us some more info.

do you have the K+n drop in?

aem?

k+n CAI?

i would get that code along with limp mode with my k+n drop in.

it was accociated with free reving the engine or a burn out.

once i went AEM, and stopped needlessly reving, no problems at all.

[04Redline0124]

plug ur maf sensor in lol...it mite be lose....ask DarkmanX on here...he got the code a couple weeks back and fixed it