OBD II scanner port problem? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

nitrojunkie383 · 10-18-2010, 03:38 PM

The other day, my wife's '04 Suburban "check engine" light came on. Over the weekend, I went to my local AutoZone to have the computer scanned to find out what the problem is. The guy plug the scanner in and it was not responsive. The scanner would not even come on. AutoZone guy thought that it was a computer problem or a bad OBD II port connector problem.

Has anyone else had this problem...or know what the problem is?

Thanks

GCncsuHD · 10-18-2010, 03:50 PM

Does your cig lighter work? I believe they share the same fuse in 03+, scanner won't read unless that fuse is good.

nitrojunkie383 · 10-18-2010, 03:59 PM

Quote:

Originally Posted by GCncsuHD

Does your cig lighter work? I believe they share the same fuse in 03+, scanner won't read unless that fuse is good.

I will check that, I want to say it does because we use some of the outlets to power things like GPS, phone charger, etc., but there might be one that itsnt working.
Thanks for the advice.

**truckdude239** · 10-18-2010, 07:48 PM

change out teh cigar fuse under the hood the cig ligter and obd2 share the same fuse on just aboute very vechile but the gms are bad about blowing that fuse

nitrojunkie383 · 10-19-2010, 07:58 AM

Quote:

Originally Posted by truckdude239

change out teh cigar fuse under the hood the cig ligter and obd2 share the same fuse on just aboute very vechile but the gms are bad about blowing that fuse

truckdude239....you answered my next question without even asking it. I checked the cig lighter and it is not working. So I looked for the blown fuse on the driver's side of the dash and couldnt find it.....and thats why, its under the hood.

Thanks for your help.

bumslie75 · 10-19-2010, 12:18 PM

so did that fix the problem for you what was the code or was it the fuse going out

nitrojunkie383 · 10-26-2010, 06:38 AM

I have fixed one problem and now know what the other problem is. Changing out the blown 15amp fuse under the hood fixed the cigarette lighter and the OBD port as well. Hooked up a scanner to it, and everything functions like it should.
Now for the check engine light. The scanner code is "P0442". It also said that it was an "emissions leak". So I am guessing that its refering to the "evaporated emissions leak" deal where it could be several things, one of them being the "loose gas cap".
I have cleared the code, and checked the gas cap and for now, all is well.

Thanks for the help everyone.

spudz · 10-28-2010, 10:11 PM

Quote:

Originally Posted by nitrojunkie383

I have fixed one problem and now know what the other problem is. Changing out the blown 15amp fuse under the hood fixed the cigarette lighter and the OBD port as well. Hooked up a scanner to it, and everything functions like it should.
Now for the check engine light. The scanner code is "P0442". It also said that it was an "emissions leak". So I am guessing that its refering to the "evaporated emissions leak" deal where it could be several things, one of them being the "loose gas cap".
I have cleared the code, and checked the gas cap and for now, all is well.

Thanks for the help everyone.

90 times out of 100, p0442 is because of a evap canister vent solenoid. I musta replaced 855493 of them at work. ALSO if you are in the habbit of over fueling the truck. It will saturate the evap canister too and if thats the case replace the charcoal canister and vent solenolid. its not the gas cap... if it was a faulty or loose cap you would get a p0440 code....trust me....

nitrojunkie383 · 10-29-2010, 08:18 AM

Quote:

Originally Posted by spudz

90 times out of 100, p0442 is because of a evap canister vent solenoid. I musta replaced 855493 of them at work. ALSO if you are in the habbit of over fueling the truck. It will saturate the evap canister too and if thats the case replace the charcoal canister and vent solenolid. its not the gas cap... if it was a faulty or loose cap you would get a p0440 code....trust me....

Thanks for the info Spudz!

We haven't been overfilling the tank...it's hard enough to keep a half tank in a suburban!

Not to say that the PO didnt overfill it. We have had the burb for almost a year now, so I am learning about the truck as problems arise.

So far the light hasn't come back on, but then again, its only been a few days.

Do you have the GM part #'s for the solenoid and canister handy? Not a big deal if you don't.

spudz · 10-29-2010, 09:39 AM

pm me your vin number and I will get you the part numbers. no problem. then just order them from gm parts direct... They sell the parts to public for what the dealership gets them for plus shipping. If you have had it a year and never overfilled it. I would just put the updated vent solenoid in it.. I can fax you instructions on installation. Basicly you just run the vents filter along the frame rail to on top the transmission. It keeps the dust out that ruins the solenoid in the first place. But if the code doesnt reset, your good to go! It usually takes a few days and a few warm up cycles.

mikewayne · 01-31-2011, 07:53 AM

Probably just couldn't get the port to fit well. its a tight fit. And check the cig ltr fuse.

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**truckdude239** · 01-31-2011, 08:14 AM

Quote:

Originally Posted by nitrojunkie383

. Changing out the blown 15amp fuse under the hood fixed the cigarette lighter and the OBD port as well. Hooked up a scanner to it, and everything functions like it should.

Thanks for the help everyone.

he said the fuse was blown and he replaced it and it works now

andrewmp6 · 02-08-2011, 07:59 AM

I don't get why they put the two on one fuse,Look how much people use the cig lighter for power.

10-18-2010, 03:38 PM	#1
nitrojunkie383 Registered User Join Date: May 2006 Location: Athens, GA Posts: 79	OBD II scanner port problem? The other day, my wife's '04 Suburban "check engine" light came on. Over the weekend, I went to my local AutoZone to have the computer scanned to find out what the problem is. The guy plug the scanner in and it was not responsive. The scanner would not even come on. AutoZone guy thought that it was a computer problem or a bad OBD II port connector problem. Has anyone else had this problem...or know what the problem is? Thanks __________________ ’67 C10 Custom LWB Fleetside, 283 bored to 301, 3 on the tree ’04 Suburban, 5.3L Vortec Last edited by nitrojunkie383; 10-26-2010 at 06:38 AM.

10-18-2010, 03:50 PM	#2
GCncsuHD Charlie Daniels w/ a Tq Wrench Join Date: May 2009 Location: Statesville, NC Posts: 1,570	Re: OBD II scanner port problem? Does your cig lighter work? I believe they share the same fuse in 03+, scanner won't read unless that fuse is good. __________________ ΜΟΛΩΝ ΛΑΒΕ 67 C10 Shortbed "Great Grandpa's Truck" I6 3 on the Tree 71k original miles 5.3 swap in the works 69 K5 Blazer-Family Beach Cruiser Project 78 K30 Dually Semi-Retired Fire Truck 350/SM465 35"s SOLD01 2500HD ECSB 6.0 4x4 5.13's 8" lift 38"s Last edited by GCncsuHD; 10-18-2010 at 03:50 PM.

10-18-2010, 07:48 PM	#4
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: OBD II scanner port problem? change out teh cigar fuse under the hood the cig ligter and obd2 share the same fuse on just aboute very vechile but the gms are bad about blowing that fuse __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

10-19-2010, 12:18 PM	#6
bumslie75 Registered User Join Date: Apr 2009 Location: Reedley Ca Posts: 360	Re: OBD II scanner port problem? so did that fix the problem for you what was the code or was it the fuse going out __________________ "There he goes. One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die." Last edited by bumslie75; 10-19-2010 at 12:19 PM.

10-26-2010, 06:38 AM	#7
nitrojunkie383 Registered User Join Date: May 2006 Location: Athens, GA Posts: 79	Re: OBD II scanner port problem? I have fixed one problem and now know what the other problem is. Changing out the blown 15amp fuse under the hood fixed the cigarette lighter and the OBD port as well. Hooked up a scanner to it, and everything functions like it should. Now for the check engine light. The scanner code is "P0442". It also said that it was an "emissions leak". So I am guessing that its refering to the "evaporated emissions leak" deal where it could be several things, one of them being the "loose gas cap". I have cleared the code, and checked the gas cap and for now, all is well. Thanks for the help everyone. __________________ ’67 C10 Custom LWB Fleetside, 283 bored to 301, 3 on the tree ’04 Suburban, 5.3L Vortec

10-29-2010, 09:39 AM	#10
spudz Registered User Join Date: Oct 2005 Location: Branchville SC Posts: 1,647	Re: OBD II scanner port problem? pm me your vin number and I will get you the part numbers. no problem. then just order them from gm parts direct... They sell the parts to public for what the dealership gets them for plus shipping. If you have had it a year and never overfilled it. I would just put the updated vent solenoid in it.. I can fax you instructions on installation. Basicly you just run the vents filter along the frame rail to on top the transmission. It keeps the dust out that ruins the solenoid in the first place. But if the code doesnt reset, your good to go! It usually takes a few days and a few warm up cycles. __________________ 2004 z71, 96 z71 on 38s, 88 Chevy k5 blazer, 4in lift. 84 swb project, 82 SWB project , 84 chevy 4x4 lwb project, 88 Jimmy beater/highschool ride. 79 c30. 99 tahoe 4x4 project. and a bunch of parts trucks..

01-31-2011, 07:53 AM	#11
mikewayne Registered User Join Date: Dec 2010 Location: Newyork, Newyork Posts: 29	Re: OBD II scanner port problem? Probably just couldn't get the port to fit well. its a tight fit. And check the cig ltr fuse. _____________________ cars for sale classic cars for sale

02-08-2011, 07:59 AM	#13
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: OBD II scanner port problem? I don't get why they put the two on one fuse,Look how much people use the cig lighter for power.



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