jimi

CEL came on today. ODB trouble code read 'P 1457(unable to pull vacuum in tank)' Not sure if my gas cap was loose. Any one know this code?
Thanks

Slows2k

It's not a gas cap, you'd have a different DTC.

Evaporative emmisions troubleshooting is pretty involved, I'd suggest a trip to the dealer to have it looked at.

s2kBryan916

Ya i was thinking the same thing when i was reading over the DTC flow chart.

jimi

Thanks guys. Should this be sooner than later? I dread going to the dealer. Won't be able to get there till sat.

Slows2k

It can wait. It's not an engine performance issue, and the problem won't get any worse.

gomarlins3

That code comes up as "Manufacturer Contrl Auxiliary Emmissions Controls" in my code software. **EDITED** I think I was wrong. Thanks SlowS2k.

Do you think the return tube could come lose from the purge tank?

jimi

Appreciated

Slows2k

P1457= Evaporative emmisions leak canister side of system. The Evap system is connected to the fuel tank. It's purpose is to recover, store and purge fuel vapor.

Wisconsin S2k

Slows2k is right. Listen to him on this. Remember, he works on S2000's for a living.

Squeezer

i had that code (or p1456) can't remember which. i took out my driver seat and when I was putting it back in, i guess i banged it on the carpet somehow and one of the seat rails cut a wire under the carpet throwing that code because it powered a valve. a quick continuity test showed my problem, pealed back the carpet and fixed the cut wire.