This is probably obvious..
Seasoned Member
Joined: Jul 2011
Posts: 413
Likes: 0
From: Murray, UT
Year: 1999
Model: Cherokee
Engine: 4.0 I6
Your's will self-diagnose by turning the ignition on and off 3 times within 8 seconds.
ON-------OFF-----ON--------OFF--------ON
then count the flashes and wright them down.
Codes will always be 2 digit codes.
You will get code 11 (computer reads no crank signal)
and code 55 (end of code sequence)
Everything between code 11, and code 55 will be your list of trouble codes.
You can google the results, or Haynes manual has them all listed.
CF Veteran
Joined: Nov 2008
Posts: 7,874
Likes: 100
From: Northern Ontario, Canada
Year: 1990, 1999, 2000
Model: Cherokee
Engine: 4.0
yes, for the code 11, your check engine light will flash once - pause - flash once.
code 55 will flash 5 times - pause - flash 5 times. code 55 is end of code sequence, so it's not really a code, it's to tell you there are no more codes.
so using that logic, count the flashes - pause - flashes for your code, then google jeep codes for your results.
code 55 will flash 5 times - pause - flash 5 times. code 55 is end of code sequence, so it's not really a code, it's to tell you there are no more codes.
so using that logic, count the flashes - pause - flashes for your code, then google jeep codes for your results.
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Seasoned Member
Joined: Apr 2010
Posts: 322
Likes: 0
From: Tauranga, New Zealand
Year: 1994
Model: Cherokee
Engine: 4.0L
Its deff not under the hood, I think it might be down the bottom of the dash on the drivers side but I cant be sure, Ive always used the flashing light on mine.
Senior Member
Joined: Jan 2011
Posts: 689
Likes: 2
From: Upstate N.Y
Year: 2000.1999,1996
Model: Cherokee
Engine: 4.0
OBD 1 is differant than OBD 2 , which is under dash, do you have a manual to take a look see? I do beleive OBD 1 plug is in the engine compartment though not 100% sure though.


