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Unread 09-02-2013, 04:15 PM   #1
ibacavergrl
Registered User
1993 YJ Wrangler 
 
Join Date: Jul 2011
Location: Fort Bragg, NC
Posts: 155
Check engine light on after mudding.. Weird codes

So I have a 93YJ... went mudding and it was fine, came home and parked it. Next day the Check Engine light came on so I didn't drive it, ended up taking my bike out. I did the on off with the ignition to get the codes from the jeep when the check engine light flashed the codes, and I came up with:

12* Direct battery input to PCM was disconnected within the last 50 key-on cycles.
24** Throttle position sensor input above maximum acceptable voltage.
or Throttle position sensor input below minimum acceptable voltage.
33* An open or shorted condition detected in the A/C clutch relay circuit.

Now I don't have an A/C so im not worried about 33*.... haven't ever had one, but this is the first time my check engine light has ever came on... running crappy... kept wanting to die on me when i tried to pull it out of the driveway and the check engine light comes on soon as I start to drive, not when I turn it on.. was weird...
ANY ideas/suggestions? I don't wanna take it to the shop if its something that I can do myself...



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Unread 09-02-2013, 06:52 PM   #2
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,676
12 33 & 55 are normal. 24 tps is caused by the tps or the map sensor. Check the vacuum lines to the map and pull and clean the tps. Disconnect the battery for a long 10 count to clear all stored codes.
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Unread 09-02-2013, 06:53 PM   #3
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,676
It is easy to fix.
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Unread 09-02-2013, 07:04 PM   #4
ibacavergrl
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1993 YJ Wrangler 
 
Join Date: Jul 2011
Location: Fort Bragg, NC
Posts: 155
ok i appreciate it... ill have to see if that works... i guess i gotta clean off all the mud that is on the engine so that i can see what i am doing...
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Unread 09-02-2013, 07:27 PM   #5
WNUNEZJR
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1994 YJ Wrangler 
 
Join Date: Jul 2013
Location: MANASSAS PARK, VA
Posts: 247
I get those some time too but they go away once I turn it off and on.
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Unread 09-02-2013, 07:29 PM   #6
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,676
Yep. You should get electrical grease in all the connectors if you are going to wheel it in water and mud. It keeps the water out.
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