Evolved X

When going on a 300mi + drive I have sometimes thrown these codes: P0137, P0513, P0171. I have a cobb ap and know what the codes stand for but I'd like to know what they mean, what could maybe be the problem, if they are "common," and how to fix it? Thanks for ANY input!
Also, I have had the P0171 pop up a lot and have tried cleaning the MAF and putting in some fuel injector cleaner in and it still comes on occasionally. It's random when it comes back on though. Doesn't seem consistent. Could I possibly have a bad o2 sensor? Rear or front? Any way to test them?

plan:b

iTrader: (3)

What are your mods? P0137 is common w/ test pipes. List your mods so we can help you more.

Evolved X

Apexi RS Catback | Perrin DP w/HFC | AMS Intake | Forge Wastegate Actuator | AEM Tru Boost | ETS 3.5" Black Anodized FMIC, UICP & LICP

No test pipe.

wrxnevox

iTrader: (6)

i think you need a cel fix and that P0171 is from your ams intake everytime you hit 3500 rpm or higher the ses light will appear just get it tune

Evolved X

I have a cel fix on. I'm tuned also.

evo 1768

iTrader: (1)

https://www.evolutionm.net/forums/ev...c-codes-p0098-