P1486 code where is the Eva pinch hose

Vacuum leak , IAC valve - idle air control , Go to your tube an check out videos on checking for vacuum leaks an how to test IAC valve an cleaning throttle plate an IAC - air passages ! Eva codes ? what code # ?

code p 0497 refers to evaporative emission system ---low purge flow====causes ---wiring---EVAP valve ---hoses blocked ---mechanical fault

Check codes--may be unrelated to EVA system.

The code P1486 mean EGRA Circuit Malfunction

obd2 scan tool

P1486 is not a code that usually is mentioned, but according to sifferent sources, it can mean a problem with the thermostat range (performance problem).Good luck.

I have a P0300 code and it marks htr & eva how can fix I
those

Found on my jeep that the high quality vac line to the evap bottle had split on the under side.

P0442, P0455 AND P0456 are all evaporative leak monitor test failures (small, medium and large leaks). These codes appear anytime the integrity of the air space above the fuel or the lines to/from the vapor canister or purge valve. If there is no damage to the canister, check the lines that run under the van from the fuel tank and canister to the purge valve (under the hood). Also, check to make sure that the hoses are not split or disconnected where they connect to the purge valve. The P1684 is abit more confusing. This is not a valid DTC for your vehicle. It's possible the scanner the shop you went to is an OTC scanner that is reporting a false code. It's also possible they wrote it down incorrectly. The closest thing that makes any sense is a P1486 which would indicate a pinched hose in the same monitor system as the other 3 codes. Best of luck!