drivin along today on my way to work, engine light comes on, car doesnt seem any diffrent, so i just kinda keep babying her to work. get here friend comes with an obd2 reader and pulls a code p0171 and it says something about running lean. wondering if anyone can give me some insite on whats actually wrong and what i need to do.

anyone? happened again today.

year and engine?

__________________
01.5 2.8qm: Custom CAI, 18" Hp Lightning on 245/40/18 Kuhmo Ecsta MX, CC mod, tinted tails, 2x 12" Jensen sub with a 300 watt Bazooka Amp, Asian driver....

woops, sorry 2001 1.8T Quattro 5 spd

Check for vacuum leaks.

__________________
2001 A4 1.8T Q Casablanca White, Tip, ESP, Xenon and Premium

no leaks i can find. after i erase the code car runs fine.