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Check eng. lite/how to check for codes?
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=6150		 Page 1 of 1
Author:  labman1 [ Sat Feb 25, 2006 5:33 pm ]
Post subject:  Check eng. lite/how to check for codes?
Well the check engine lite came on while my wife was driving the other day. She filled the tank and the next day it was off (probabally nothing to do with it). Its been off for over a week and today I was driving it and it came on again :? . My question is: is there a way to check the computer for codes and if so is there a list of codes? There is no loss of power or anything out of the ordinary so what the heck is goin on!
Thanks-Dave.
Author:  Taz [ Sat Feb 25, 2006 6:08 pm ]
Post subject: 
If the fault went away when you filled up with fuel, I would check the gas cap, sometimes they do not vent properly and the computer will throw codes, make sure it is tight, take it off and bang it a little bit, put it back on see if it helps, if it seems related to the cap and keeps returning, get a new cap.
Author:  labman1 [ Sat Feb 25, 2006 6:28 pm ]
Post subject: 
Shouldnt be the cap, Erie county in PA now has emissions testing they charge us a min of $35 to put our caps on $10000 machine to see if they leak any fumes :x , but I'll duble check it....... any other ideas? Oh by the way I filled up again today, and still on.
Author:  2003KJ [ Sat Feb 25, 2006 7:43 pm ]
Post subject: 
In the owners manual it states that the KJ is picky about the quality of the gas you use. Using a lower quality could cause the check engine light to come on. I'll have to go look up the words again in the book....but thats my suggestion....and are you SURE that cap is on all the way??? (atleast 3 clicks)

clicky here for instructions on how to check your CEL.
Author:  labman1 [ Sun Feb 26, 2006 12:43 pm ]
Post subject: 
Just checked the code, P0158, Sensor circuit high voltage (bank 2 sensor 2) O.K. now what the heck is that (and thanks for the link to the codes).
Author:  Waldn [ Sun Feb 26, 2006 4:35 pm ]
Post subject: 
labman1 wrote:
Just checked the code, P0158, Sensor circuit high voltage (bank 2 sensor 2) O.K. now what the heck is that (and thanks for the link to the codes).

I got the same code Dec. 27
O2 sensor, dealer replaced it under warranty
Author:  Signcutter21 [ Sun Feb 26, 2006 11:34 pm ]
Post subject:  OK who has ESP
Man, you guys rock. I was just getting ready to make a post about how to check the engine light codes with just the odometer display. Lo and Behold, there are my answers. Well off to check what the problem is (this time). Thanks for the help.
later,mike

edit: man that was easy enough. so anybody know what:

"P0442 Evaporative Emission Control System Leak Detected (small leak) " means? thanks again
Author:  Waldn [ Mon Feb 27, 2006 12:02 am ]
Post subject: 
first thing check that your gas cap is on tight, three clicks, if that is the problem it may take a couple of trips, starts, to go away.
if that doesn't do it, then it may be a small leak in the lines near the gas tank. I recall seeing posts about that some where months ago, but I have never experianced this problem so others may have a better idea.
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