What is p 0455 mean? - 2004 Suzuki Forenza

https://www.obd-codes.com/p0455

http://www.obd-codes.com/p0455

03 VIT
no engine option stated. hard.
0455 is classic EVAP. failure.
99.9% are loose gas cap or bad gas cap.
tighten it, reset the DTC and drive, comes back, then its real.

EVAP is the fuel tanks , venting system. its a Closed system.
now.
the code means it has leak.
in the smog station the first test is the cap is removed
and a pressure test cap inserted on the filler neck. and
we do the classic, leak down rate test.
if it fails you fail.
not surprising, if the cap is tight and new, and you fail evap
we do that test too, first. omg it does leak.
i then hold a 1/2 rubber hose to my ear and find the leak.
we use pressure at 1-2 psi on the filler neck (shop air and reg)
to apply air, and test the system for leaks.
we use dry nitrogen, for safety but if frisky?, real air works too.

if not up to all that, you can inspect every inch of the system
and might find a cracked or hose that fell off the vents.
and friends.

P0455 will not cause a no start. P0455 is leak in the fuel vapor recovery system, it will never cause any type of drive related issue. Have the fuel pressure checked and see that you have spark, my bet is the fuel pump has gone out. A defective electric fuel pump will not set any code.

this obd2 trouble code table can help you understand the meaning of code, for these codes, you can try,
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, or
Inspect the EVAP system for cuts/holes in tubes/hoses.

Have you Gotten Gas Lately ? A code 0455 on chrysler is usually a loose gas cap. it could be bad as well . Try taking off and putting back on.

P0455, large evaporative emissions leak, was the gas cap left off? is it loose?

code CODE PO455 fuel tank large leak.replace it .dont cost much.if that not it you have a evaporative leak.

There is a leak somewhere in the evaporative emission control system. The best way to test that is have a smoke test done on it to find out where the leak is. You'll have to call around to see if any repair shops have a smoke machine, or call a dealer.

Most common problem for 0449, and 0455 on this truck is dust in evap vent valve causing valve to stick open and resulting in 0455
need to replace evap vent valve and clean dust from vent hoses