P0455 - what now?

wonj · May 24, 2011

I have a 2002 Ford Focus ZX3 with Zetec engine...close to 170,000 miles. Last week, the check engine light comes on. I take it to the dealership...they say it's the vapor management valve...and replace it to the tune of $600 freaking dollars.

Today, the light comes on again. I found out a friend has one of those engine code reader things. It's throwing the same freaking code!!! P0455! Few questions...

1) Can I get the dealership to fix this at no additional cost? Or will I have to pay above the $600 I already paid?

2) I'm guessing they checked simple things like gas cap and hose lines. What else could it be? Could I do it myself? (The stupid VMV looks like 2 bolts and a few connections...should have taken them 30 minutes tops...$400+ in labor my arse.)

3) How important is this system? Can I ignore it?

Thanks!

shiftdrift06 · May 25, 2011

Have you tried a new gas cap?

wonj · May 25, 2011

shiftdrift06 said:
Have you tried a new gas cap?

I have not. I just assumed the dealership would have checked simple, cheap things like that first. No?

TXFO · May 29, 2011

the evap system can be complicated to troubleshoot. what you are mainly looking for is leaks. whats needed here is a smoke machine. It could be anything from the vent valve not closing to a bad fuel pump seal. usually its a rotten hose. I assume the VMV they are talking about was the purge valve. Thats what you sell when you cant find the leak, I usually throw in a fuel cap too. :lol:

you are tightening the cap 3 clicks right?

sea93 · Mar 21, 2012

I was getting that after a major repair job and it turned out to be a small missing vacuum (coontrol)line on the Evap control valve on the firewall.

P0455 - what now?

wonj

shiftdrift06

wonj

TXFO

sea93

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