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#4593051 - 12/03/17 01:29 PM Will code P0440 reset after problem fixed??
fozzdesy2001 Offline


Registered: 11/22/13
Posts: 60
Loc: York, Pa
I hope someone can tell me if evap code P0440 will reset without clearing all the OBDII ready codes first? My vapor canister vent valve/solenoid had a broken wire at the connector so wasn't getting power, this threw a "service engine soon light" of course. I would really like to avoid the complete drive cycle ritual if possible. The vehicle is a 1999 Isuzu Hombre (same as a Chevy S-10), 2.2, 5-speed, RWD, Pickup. I can reset the computer if I have to but it takes looong time with a lot of driving to get everything ready to test the evap part.
_________________________
2001 Subaru Forester S
Replaced with a 2006 Forester

2004 Subaru Forester XT
Death by deer. Replaced with 2003 Impreza Outback Sport (beater)

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#4593055 - 12/03/17 01:32 PM Re: Will code P0440 reset after problem fixed?? [Re: fozzdesy2001]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Yes, the computer will eventually turn the light off and erase the code if the issue has been corrected.

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#4593083 - 12/03/17 02:06 PM Re: Will code P0440 reset after problem fixed?? [Re: fozzdesy2001]
eljefino Offline


Registered: 06/15/03
Posts: 32635
Loc: ME
If you leave it alone, when the light goes out you'll say "aaaaah".

If you clear the code, you'll be obsessively checking your scan tool to see if the I/Ms clicked in yet.

Keep the tank between 1/4 and 3/4, that does more to help it than anything else.

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#4593109 - 12/03/17 02:32 PM Re: Will code P0440 reset after problem fixed?? [Re: fozzdesy2001]
fozzdesy2001 Offline


Registered: 11/22/13
Posts: 60
Loc: York, Pa
Thanks, this is exactly what I wanted here. Awesome site!!
_________________________
2001 Subaru Forester S
Replaced with a 2006 Forester

2004 Subaru Forester XT
Death by deer. Replaced with 2003 Impreza Outback Sport (beater)

Top
#4593166 - 12/03/17 03:43 PM Re: Will code P0440 reset after problem fixed?? [Re: eljefino]
fozzdesy2001 Offline


Registered: 11/22/13
Posts: 60
Loc: York, Pa
WOW, that was fast! One cold start and one lukewarm start for a total of 10 miles and the light is OFF! YESSSSSS!!!!


Edited by fozzdesy2001 (12/03/17 03:45 PM)
_________________________
2001 Subaru Forester S
Replaced with a 2006 Forester

2004 Subaru Forester XT
Death by deer. Replaced with 2003 Impreza Outback Sport (beater)

Top