P0442 Code fun

blacknome · Post by **blacknome** » Wed Mar 14, 2012 2:49 pm

I have been battling a P0442 code in wifeys Impala for a year now. I changed the Evap Valve with a used unit then a new one. Changed the gas cap and the code always returns.

Now the van has been tripping the P0442 code as well. All I have done so far is replaced the gas cap and re-set the code ( it returns within 30 mins of driving ). I looked at the fuel overflow and it looks solid enough

Any suggestions for either vehicle ?? I need to run it thru emissions testing before July and they won't pass it with any emissions trouble codes

Post by **MountainManJoe** » Wed Mar 14, 2012 7:37 pm

http://www.obd-codes.com/p0442

Read under "Causes"

LiftedAWDAstro · Post by **LiftedAWDAstro** » Thu Mar 15, 2012 10:08 am

You could also take it to a a shop that has a smoke injector machine. They can find the leak with that. We had to do it on our 2005 Trailblazer we had.

blacknome · Post by **blacknome** » Fri Mar 16, 2012 7:47 am

yeah, I will have to do something. What are the chances that the 2 vehicles that require emissions testing both have the same fault codes and that it's something I can't figure out ?

Chevy & GMC Vans

Chevy & GMC Vans

P0442 Code fun

P0442 Code fun

Re: P0442 Code fun

Re: P0442 Code fun

Re: P0442 Code fun