2000 Dodge Intrepid with PO455 code and stalling.

You have a large Evap leak.
Fuel cap not fitted ... that'll do it.

its a evap code could be from a bad gas cap to a cracked vapor line or a bad sensor

Hi.

The DTC PO455 means "Evaporative System Emission Leak". The evaporative system is where gases evaporating from tank are collected and directed to the engine where they get mixed with fuel from pump and air.

P0455 is often caused by a defective fuel cap. The fuel system in your Beetle is pressurized. If the cap is defective it will allow gases and air out triggering the code.

Change the cap first.

If the fuel cap does not fix the problem then there is effectively a leak. That is usually caused by a broken evap system hose. In that case the parts in the evaporative system must be tested. The repair should not be expensive.

Regards.

Ginko

PO455-EVAP Contol System Leak Detected

Gas Cap
EVAP canister purge valve stuck closed
Loose hoses
Vent solenoid stuck open
Fuel tank pressure sensor
Etc

That should keep you busy for awhile

Best take it to a shop with an EVAP Smoke Machine and Professional Scanner

There is a pretty good emissions leak somewhere.

Hi:
These codes are part of your evaporative emissions system, and can be a real challenge to troubleshoot and repair. Most people start with a new gas cap, but end up checking hoses, charcoal canister, and evap control solenoid before all is well.

I know this isn't the answer you were looking for, but at least some direction!

po442 is evap emission control system leak (small) 1 of the lines for emissions is leaking. po455 is-- emission control system leak (large). turn off light with code scanner after it is fixed.

"po455 large leak" means that you are not maintaining positive pressure in your fuel system. Have a mechanic do a "smoke test" on the fuel system. Could be as simple as a loose gas cap...

The problem is most likely to be with your vacuum line they put cheap rubber hose for this purpose. You should find a diagram at the front of the vehicle trace the hoses by this diagram. You most likely will find a bad piece of hose.

hi !the three codes po353,351 and355 refer to the ignition coil po455 refers to evap emission control leak [LARGE} HOPE THIS HELPS