Code: P0442 (EVAP)
Thread Starter
Pro
Joined: Apr 2001
Posts: 686
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From: Arizona by way of Ohio,USA
Code: P0442 (EVAP)
FIXED:
I have a code "P0442" if I read that right it's a small leak in the EVAP system.
Does anyone have an rough idea if tracking this down and eliminating it is closer to an hours work or a weeks work for an average non-ASE person (me)?
If not, by chance does anyone have an estimate of what to expect dollar wise at the dealership to correct P0442?
The car is an '02 Z06 with 26K on the odometer.
Thanks,
Mike
I have a code "P0442" if I read that right it's a small leak in the EVAP system.
Does anyone have an rough idea if tracking this down and eliminating it is closer to an hours work or a weeks work for an average non-ASE person (me)?
If not, by chance does anyone have an estimate of what to expect dollar wise at the dealership to correct P0442?
The car is an '02 Z06 with 26K on the odometer.
Thanks,
Mike
Last edited by ReddyZ06; Nov 18, 2014 at 02:06 PM.
Race Director
Joined: May 2012
Posts: 15,765
Likes: 3,282
From: Phoenix area, AZ
I have a code "P0442" if I read that right it's a small leak in the EVAP system.
Does anyone have an rough idea if tracking this down and eliminating it is closer to an hours work or a weeks work for an average non-ASE person (me)?
If not, by chance does anyone have an estimate of what to expect dollar wise at the dealership to correct P0442?
The car is an '02 Z06 with 26K on the odometer.
Thanks,
Mike
Does anyone have an rough idea if tracking this down and eliminating it is closer to an hours work or a weeks work for an average non-ASE person (me)?
If not, by chance does anyone have an estimate of what to expect dollar wise at the dealership to correct P0442?
The car is an '02 Z06 with 26K on the odometer.
Thanks,
Mike
Drifting
Joined: Sep 2009
Posts: 1,719
Likes: 4
From: cinnaminson n.j.
St. Jude Donor '14
Is the 442 current or history? If current the best case scenario is stated above. If the seal is cracked or squished, replace it and clear the code. Drive it and recheck for codes after about 100 miles, include some steady interstate cruising. If it's not set stop at your local parts store and have them check the obdII monitors. If the evap has run and passed your good. They can take a while to complete.
The other way to check is to use a scanner that you can check dtc status. Punch in p0442 and see if it passed.
If it's not the cap, you can PM me. I'm very familiar with evap problems
The other way to check is to use a scanner that you can check dtc status. Punch in p0442 and see if it passed.
If it's not the cap, you can PM me. I'm very familiar with evap problems
Thread Starter
Pro
Joined: Apr 2001
Posts: 686
Likes: 45
From: Arizona by way of Ohio,USA
Is the 442 current or history? If current the best case scenario is stated above. If the seal is cracked or squished, replace it and clear the code. Drive it and recheck for codes after about 100 miles, include some steady interstate cruising. If it's not set stop at your local parts store and have them check the obdII monitors. If the evap has run and passed your good. They can take a while to complete.
The other way to check is to use a scanner that you can check dtc status. Punch in p0442 and see if it passed.
If it's not the cap, you can PM me. I'm very familiar with evap problems
The other way to check is to use a scanner that you can check dtc status. Punch in p0442 and see if it passed.
If it's not the cap, you can PM me. I'm very familiar with evap problems
Thanks the code reads P0442 H C so I think that means current. The cap and seal look good with no cracks, but a 13 year old seal might just be squished as you said.
I'll go visit Chevy for a new cap and try it out. Thanks for the ideas!
Mike
p.s. dbgoodwin, No smell of gasoline at all, but thanks for that suggestion. I got under the car too and no signs of leaks there either.
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2020 Corvette of the Year Finalist (performance mods)
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you might also check the lines at the firewall and driver side of the intake that go to the evap solenoid... make sure they didn't pop off and you can also remove them, plug one end with your finger, and blow in the other end, if there are any holes in the line you should he able to tell
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Thread Starter
Pro
Joined: Apr 2001
Posts: 686
Likes: 45
From: Arizona by way of Ohio,USA
you might also check the lines at the firewall and driver side of the intake that go to the evap solenoid... make sure they didn't pop off and you can also remove them, plug one end with your finger, and blow in the other end, if there are any holes in the line you should he able to tell
Thanks I'll check before going to the dealer for the cap.
Mike
Thread Starter
Pro
Joined: Apr 2001
Posts: 686
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From: Arizona by way of Ohio,USA
Fixed:
Thanks everyone for the great suggestions.
It was the gas cap. It looked great but must have had too many years on the seal. Went to Chevrolet bought a new cap for under $25. Put the cap on and cleared the codes as suggested above, it'a all good now.
Thanks again!
Mike
Thanks everyone for the great suggestions.
It was the gas cap. It looked great but must have had too many years on the seal. Went to Chevrolet bought a new cap for under $25. Put the cap on and cleared the codes as suggested above, it'a all good now.
Thanks again!
Mike
Race Director
Joined: May 2012
Posts: 15,765
Likes: 3,282
From: Phoenix area, AZ
Fixed:
Thanks everyone for the great suggestions.
It was the gas cap. It looked great but must have had too many years on the seal. Went to Chevrolet bought a new cap for under $25. Put the cap on and cleared the codes as suggested above, it'a all good now.
Thanks again!
Mike
Thanks everyone for the great suggestions.
It was the gas cap. It looked great but must have had too many years on the seal. Went to Chevrolet bought a new cap for under $25. Put the cap on and cleared the codes as suggested above, it'a all good now.
Thanks again!
Mike
Thanks for coming back and posting the fix. This will help someone else in the future.
Melting Slicks
Joined: Jul 2012
Posts: 2,507
Likes: 9
You won't know for a while if it's fixed, the evap system doesn't run all the time! Typically the evap system runs at 1/2 tank or so to pull the fumes out of the tank. Run the tank low and see it it returns. The cheap actron scanners will tell you if/when the EVAP I/M monitor ran.
Thread Starter
Pro
Joined: Apr 2001
Posts: 686
Likes: 45
From: Arizona by way of Ohio,USA
You won't know for a while if it's fixed, the evap system doesn't run all the time! Typically the evap system runs at 1/2 tank or so to pull the fumes out of the tank. Run the tank low and see it it returns. The cheap actron scanners will tell you if/when the EVAP I/M monitor ran.
The check engine light and code started during some heal/toe downshifts with minimal fuel in the tank. Right before putting the new gas cap on, I put 14.9+ gallons in the tank. So I'll see if it returns when the gauge reads low again.
Mike
Burning Brakes
Joined: Jun 2012
Posts: 803
Likes: 42
From: Destin Florida
If it does many shops now have diagnostic scanners that can actuate every part of the EVAP system. They are a step above using smoke through the EVAP port to check for leaks. Only a big deal if you live in an emissions testing part of the country.
Thread Starter
Pro
Joined: Apr 2001
Posts: 686
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From: Arizona by way of Ohio,USA
Mike