hi all, there are a code what i found:
P1457 Evaporative Emissions (EVAP) Control System Leakage (EVAP Canister System)
&
P0420 Catalyst System Efficiency Below Threshold

What sould i do next? anything need to be change or replace? i have no idea...

Thanks all~!

 

what year and model

 

98 LX
4cyl vtec

thanks!

 

Try this .zip file
http://members.troublecodes.ne...7.zip
It's real close to your system.
The cat code should wait till you fix the evap problem first..then clear the codes and go thru 2 drive cycles......then go get a new cat.