SOURCE: Check Engine Light - Code numbers P1486 & P0455
Found on my jeep that the high quality vac line to the evap bottle had split on the under side.
SOURCE: code p0455 evap emission (large)
have the gas cap tested or just replace it, then disconnect the battery for 5 minutes to reset the code, then drive it for a few miles and see if problem comes back, if it does a trip to the dealer is in order, as this may be covered by your emission warranty which is good for 70,000 miles.
SOURCE: Code Scan Reads P0455 Evap. Emissions Leak, Large
large leek is usually the gas cap. just had the same problem
SOURCE: Jeep comes up with EVAP Emission Control System code- please help
YES A CAP FROM THE DEALER WILL MOST LIKELY SOLVE THIS ISSUE...SOME OF THE AFTERMARKET CAPS ARE NOT MADE TO THE PROPER SPECS TO MAINTAIN PROPER PRESSURE/VACUUM ON THE SYSTEM WHEN THE EVAP TEST BY THE COMPUTER OCCURS
Testimonial: "Thank you- I'll try that."
SOURCE: p0455 evap emission control system leak (large) on
EVAP evaporative emissions systems monitoring
This system includes the on-board refueling vapor recovery (OVRV) system with leak detection (LDP) pump.
The ORVR system filters fuel vapor through the EVAP canister to prevent vapor escaping directly into the atmosphere.
The engine Control Module (ECM) determines when appropriate conditions are met and activates the LDP to pump a small amount of air pressure into the fuel tank and lines. The pump runs until a pre-determined pressure or time is reached. If the system does not hold the pressure, a fault or DTC is stored in the ECM.
The area this is located is behind the right plastic rear wheel liner cover. You will see the fuel filler neck from there and the rest of the EVAP system. Visual check for cracks on all the hoses specially the hose clamps. There are 3 lines connected to the Activated charcoal canister (EVAP canister fastened to body) that are detachable and use O-rings for secured sealing. Check if O-rings, if damaged, replace.
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