Upon the recommendation by several Disco owners I've installed the Ultra-Gauge which is phenomenal. It's reading two codes right now that deal with the evap system and I could use some help figuring them out. The first is a P1451 and the second a P1481; I'm replacing the fuel cap on it tonight when I get home because I noticed it didn't seal too well. What other things should I inspect to verify so I'm not jist changing random parts. Any help is greatly appreciated!!!

 

If your fuel cap wasn’t sealing well, you probably found your problem.

 

I replaced the fuel cap anda still getting the two codes. Also, there's the smell of it burning rich; I have a purge valve coming in and plan on crawling underneath it tomorrow to check the wiring and solenoids at the charcoal canister on the frame rail.

 

You will have the codes until they are cleared. Does the UltraGuage allow that?

 

You can clear codes with the Ultragauge.