What can i do po455 code

SOURCE: 2005chevy colorado check engine light on code code

This is an EVAP system code. There is a good chance that you just didn't put your gas cap on tight enough the last time you got gas. Check your gas cap and make sure it clicks at least two times after tightening it. If after doing this and driving for a while, the code doesn't go away, you will need to have further diagnosis done as another component in the evaporative emissions control system could have failed.

capt_sacto

• 24 Answers
• Posted on Sep 29, 2009

SOURCE: What does diagnostic code PO455

A code p0455 most likely means one or more of the following has happened:

• A loose or improperly affixed gas cap
• A non-conforming gas cap (i.e. not factory/original brand)
• Other leak or damaged piece in EVAP system

• Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
• Otherwise, replace the gas cap, and/or
• Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary.

SOURCE: Code PO442 & PO455 on a 2003 Dodge Caravan with 3.3 engine

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.

SOURCE: check engine light comes on

"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...

Ronny Bennett Sr.

• 6988 Answers
• Posted on Apr 14, 2010

SOURCE: engine light on. Codes PO455 and PO442?

There is a pretty good emissions leak somewhere.