anyone know anything about obd2 evap.. mine threw a code 90 and it said something about the evap canister and fuel tank... anyone know what might have cause this or how to fix it?

 

Your gas tank, filler neck, lots of hoses, charcoal EVAP canister, some more hoses, & a whole bunch of solenoid valves work together to control evaporation from the gas tank. All that stuff has to be airtight. Code 90 says something isn't airtight. You could go to AutoZone & read the OBD-2 code (either P1456 or P1457) to narrow it down.

P1456 includes the gas tank & filler neck. You get this one if you forget to tighten the gas cap. But it also includes several hoses or even a leak in the tank itself.

P1457 includes the EVAP canister, along with a bunch of other hoses & valves.

What car is this? The details will be different depending on model & year.

 

yeah the car is a 99 gsr!

 

OK, I had to dig into that on a '98 Accord. I suppose the Integra is sorta similar, but maybe the way they split up the system might be different. There's all kinds of detail in the Helm shop manual.

https://honda-tech.com/zero...63913
Look down where I posted about that. But remember the details of which valve is supposed to be normally closed or normally open, or where each valve is physically mounted, will be different.

 

it could be something as simple as your gas cap isnt on tight or its leaking.. check it out first.. make sure its tight then reset tha ecu..