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Unread 02-10-2012, 12:36 PM   #1
jonesy311c
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2001 XJ Cherokee 
 
Join Date: Jan 2012
Location: Brick, NJ
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Failed inspection for OBD need some help!

I took my 2001 XJ in for NJ inspection today and I failed. I failed for the following reasons:
Overall Readiness Result: Fail
Catalytic Converters: Not Ready
Evaporative System: Not Ready
Oxygen Sensors: Not Ready
Oxygen Sensors - Heaters: Not Ready

They gave me a little explanation that said:
"Based on information obtained from the On-Board Diagnostic (OBD) system, the system is not ready to determine the status of the pollution control system on this vehicle. To continue with the inspection process, the vehicle's OBD system must be ready for testing upon reinspection. See the owner's manual for information on "OBD/Readiness Driving Procedures" or contact your vehicle service provider."

It passed for everything else. I'm not getting any codes, and everything seems to be working fine. The only light I have on is for the airbag. I spoke with my friend that is a mechanic and he's got no clue. Any help would be appreciated

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Unread 02-10-2012, 12:43 PM   #2
CJ7-Tim
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Fix the airbag issue. A short circuit in the airbag clock spring can back-feed 12 volts into your 5 volts engine computer. That will mess with the computer readiness, and can possibly wreck the computer completely.
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Unread 02-10-2012, 01:12 PM   #3
captainmorgan44
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2000 XJ Cherokee 
 
Join Date: Dec 2011
Location: Commerce Twp/ White Lake, Michigan
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jeeps sure are sensative creatures arent they, i blame chrysler
but on a more serious note, i can second that note get the airbag light fixed
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Unread 02-10-2012, 01:33 PM   #4
xGArfx
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1999 XJ Cherokee 
 
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My airbag light has been on for almost 2 years.... i passed inspection in NJ just recently, sorry I have no input on how to fix your issues though.
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Unread 02-10-2012, 01:55 PM   #5
dcampone
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Location: Bloomingdale, il
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Quote:
Originally Posted by jonesy311c View Post
I took my 2001 XJ in for NJ inspection today and I failed. I failed for the following reasons:
Overall Readiness Result: Fail
Catalytic Converters: Not Ready
Evaporative System: Not Ready
Oxygen Sensors: Not Ready
Oxygen Sensors - Heaters: Not Ready

They gave me a little explanation that said:
"Based on information obtained from the On-Board Diagnostic (OBD) system, the system is not ready to determine the status of the pollution control system on this vehicle. To continue with the inspection process, the vehicle's OBD system must be ready for testing upon reinspection. See the owner's manual for information on "OBD/Readiness Driving Procedures" or contact your vehicle service provider."

It passed for everything else. I'm not getting any codes, and everything seems to be working fine. The only light I have on is for the airbag. I spoke with my friend that is a mechanic and he's got no clue. Any help would be appreciated
Have you disconnected your battery lately? That will reset your OBD stuff and you will have to drive the minimum amount of distance for it to have enough info to give you the OK.

My car failed for emissions related stuff in Illinois just a month ago. Of course mine was a "fail" and not a "not enough info." I replaced a cracked emissions hose; unhooked and rehooked the battery to turn off the check engine light, drove for 400 miles just to be safe, brought it back and it passed. My airbag light is also on, btw.

If you haven't accidentally(or on purpose) reset the check engine light recently, then it's probably some quirky computer issue that needs to be looked at by a dealer.

I am by no means an expert, btw.
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Unread 02-10-2012, 01:57 PM   #6
jasonmason147
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Location: Asheboro, NC
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Same here, airbag light been on for years. No problems passing inspection....yet.
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Unread 02-10-2012, 01:57 PM   #7
Azzy
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Yep, if you cleared a light, you will have to go some distance for the computer to re-learn its emissions protocols and settings based on 02 sensor input.

At least that is what i was told by an inspection shop.
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Unread 02-10-2012, 01:58 PM   #8
jonesy311c
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2001 XJ Cherokee 
 
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As for the air bag, I know I gotta get that fixed. I should've noted that it came on after I got water in the truck, so I think I fried that computer.
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Unread 02-11-2012, 08:19 PM   #9
jonesy311c
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Location: Brick, NJ
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I hooked it to the scan tool today and I got a P0455 code. Put a new stant gas cap, and I'm still getting a code. I dont have any loose hoses or anything in the evap that I can see or hear. any clues?
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Unread 02-11-2012, 09:25 PM   #10
filluptrk
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2000 XJ Cherokee 
 
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Posts: 1,203
You have a leak in the EVAP system. Check all the tubing under the hood, and around to the purge solenoid over on firewall pass side. It is next to the accumulator for the A/C. There is a connector to the intake manifold, that can go bad. Check also the canister under the jeep on drivers side rear wheel area. Check the tubing there and up to gas tank. The 0455 is a large leak so it may be easier to find.
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Tags
catalytic converter , evap , OBD II , oxygen sensor

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