dds02400

2010 GT3, i was driving with close to empty gas tank on the way to gas station, then run into a moderate "dip" on the road. Then the engine light out and i ran the code and given P2402 upper limite value exceeded. i tried the new gas lid trick, it doesnt work. any idea?

flat6fan18

Does it come back when you clear it? My car comes up with random codes that never come back when I’m running near empty….

dds02400

yea it keeps coming back after i cleared it

RAudi Driver

You filled up, cleared code, drove it and it came back?

dds02400

thats exactly what i did, still come back

Spyerx

Replace the leak detection pump as a first step. Could also be the canister, or a leak, but the most common failure point is the pump. They aren’t too $. It’s in the frunk area, under the cowl. If thats not it you might have to have the system leak tested. See page 201-30 in the PET. Part 11. 99760512501

On the 997 GT3, the evap vent goes into the oil tank IIRC, there is a check valve back there. On other cars like the carrera and turbo there is a solenoid. GT3 doesn’t have that.

https://www.suncoastparts.com/product/95860510700.html

dds02400

thanks so much Spyerx. i will go ahead order the 99760512501.