willyd465

i got a check engine light last night when i left my car idlein, and i checked it with my tuner and it said: P0174 System Too Lean - Bank No. 2. what can i do for this, my mods are off road h, hps hardball'r intake, brenspeed 93 tune..

8banger

Afew things you can do..Check for exhaust leaks ahead of your upstream o2 ....Vaccum leak of sort(small)...A partially clogged injector...Change the fuel filter lately?...Check fuel pressure....

willyd465

i just put new injectors in, i'll change the fuel filter tomorrow, and no exhaust leaks, just went through and got everything squared away on that end. im gunna reset the code and see if it comes back or if i just got it for some dumb reason.

LetThePoniesRunFree

You may also want to check that your MAF sensor is clean and not malfunctioning. I've taken the MAF off and sprayed it with electronics cleaner before with no ill effects. Just make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling. In the vast majority of cases, simply cleaning the MAF sensor does the trick when the ECM throws a P0174 or a P0171. Hope that's the problem as it's an easy fix.