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Unread 11-09-2008, 06:28 PM   #1
02Lightning
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1995 ZJ 
 
Join Date: Dec 2005
Location: Dayton, OH.
Posts: 553
95 Zj Diagnostic codes?

Does anyone have a chart with them and how do I get them? My engine service light came on for a while and then when out.

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1995 Jeep Grand Cherokee Limited 4.0L NP249 Transfer Case, 42RE, 206,000 miles
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Unread 11-09-2008, 06:32 PM   #2
-Joe-
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1995 ZJ 
 
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Location: Lexington, KY
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Might help you to search as its in the FAQ.. But here:

To display codes cycle the ingition key On-Off-On-Off-On within three seconds. Count the number of flashes, first digit, pause then second digit will be displayed in a series of flashes. (2 flashes, pause, 1 flash = 21)

11 - No Crank Reference Signal At PCM (Crankshaft Position Sensor)
12 - Battery Disconnected Within last 50 Key-on cycles
13 - No Change In MAP Sensor
14 - MAP Voltage Too Low Or Too High
15 - No Vehicle Speed Sensor Signal
17 - Engine Is Cold Too Long
21 - O2 Sensor Signal At Center Or Signal Shorted To Voltage
22 - ECT Sensor Voltage Too Low Or Too High (ECT = Engine Coolant Sensor)
23 - Charge Air Temperature Sensor Voltage Too High Or Low (Intake Air Temp Sensor)
24 - Throttle Position Sensor Voltage Too High Or Too Low
25 - Idle Air Control Motor Circuit Shorted
27 - Injector Control Circuit Signal Not Responding Correctly.
31 - EVAP Purge Solenoid Circuit Open Or Shorted
32 - EGR System Failure
33 - A/C Clutch Relay Circuit Open Or Shorted
34 - Speed Control Solenoid Ciruit Open Or Shorted (Vacuum Or Vent)
37 - Torque Converter Clutch Solenoid Circuit Open Or Shorted
41 - Generator Field Not Switching Properly
42 - Auto Shutdown Relay Control Circuit Open Or Shorted Or No ASD Voltage
44 - Battery Temp Sensor Voltage Out Of Limit
45 - Overdrive Solenoid Circuit Open Or Shorted
46 - Charging System Voltage Too High
47 - Charging SYstem Voltage Too Low
51 - O2 Sensor Signal Stays Below Center (Lean)
52 - O2 Sensor Signal Stays Above Center (Rich)
53 - Internal PCM Failure
54 - Sync Pick-Up Signal Not Detected (Camshaft Position Sensor/Ignition Pickup)
62 - PCM Failure SRI Miles Not Stored
63 - PCM Failure EEProm Write Denied

55 End Of Codes

These codes are good for years 93, 94 and 95.

The above procedure will work for 96 and up but be aware an OBD II scanner will be needed as the above codes could have multiple meanings.


Transmission codes for 42re and mabye others, same routine but displayed via the overdrive light.

11 - Engine RPM Input
12 - Output shaft sensor input
13 - Vehicle speed input
14 - Governor pressure sensor input
15 - Throttle position sensor input
16 - Transmission fluid temp input
17 - Overdrive override switch input
18 - System voltage
19 - Internal fault in module
21 - Governor pressure solenoid output
22 - Overdrive solenoid output
23 - Converter clutch solenoid output
24 - Overdrive override lamp output
25 - Internal fault in module
26 - Governor pressure sensor offset drift
55 - end of codes
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'95 Jeep Grand Cherokee Laredo I6 4.0L
242TC - Extreme Engineering 2" Front Lift/1.75" Rear Lift - ES9000 Shocks + JKS BPEs
Moog Cargo Control Springs
Magnaflow Converter - Dynomax Muffler
235/75/15 AT Uniroyal Liberator Tires
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Unread 11-09-2008, 06:42 PM   #3
02Lightning
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I looked but didn't have any luck. Thanks!
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1995 Jeep Grand Cherokee Limited 4.0L NP249 Transfer Case, 42RE, 206,000 miles
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Unread 11-09-2008, 07:00 PM   #4
magnumcherokee
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May have to cycle the key off for a couple minutes and then try again if it does not flash the first time trying it. I have run into this before. Count the number of times the check engine light flashes at ya, it will repeat the code several times or codes if more than one is present. May have to repeat a couple times to double check your count, miss one flash and can be chasing your tail down the wrong code!!
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Unread 11-10-2008, 04:52 AM   #5
02Lightning
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I got a code 51
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Unread 04-27-2009, 07:16 PM   #6
Hussler
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what do i do about a 24?
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Unread 04-27-2009, 08:15 PM   #7
BlingBlingZJ
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Quote:
Originally Posted by hussler737 View Post
what do i do about a 24?
Replace your TPS sensor if that doesn't work check for shorts in the wiring. I also had a code 24 and replaced the TPS 3 times so I believe its the PCM so I ordered one from kolak and when it gets here will see if that fixes it.
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Unread 05-14-2009, 05:43 AM   #8
ttavenieriii
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1994 ZJ 
 
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Posts: 133
pullin code 12 51 21
what should i do.
last night we went out mudding and my truck started sputtering really bad.
so i sprayed wd40 in the cap and it ran like a champ for about 5 mins then messed up again.
this problem only happens when i start to go off road and i run through water or muck.
let the vehicle sit for a day or two and the problem of sputtering go away.
the sputtering wont let me drive more than about 35.
i can rem the engin to around 2200 befor it sputters.
mainly only sputters under a load meaning while in a gear but sitting still not as bad still sputters but more like around 4000 rpm
any ideas?
changed plugs and wires 3 days ago?????????
maybe a new cap and roder. i did these like 8 months ago but could i need a new one.
any ideas would help.
thanks in advanced
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Unread 05-14-2009, 10:59 AM   #9
BlingBlingZJ
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looks like your 02 sensor is bad
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Unread 08-09-2012, 01:17 PM   #10
windoughboywin
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great info

Joe,

Great info thanks!
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Unread 10-15-2012, 12:23 PM   #11
MTBlue
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So if I flash a 55 does that mean that it's not throwing any codes? Pr did I miss something?
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Unread 10-15-2012, 02:10 PM   #12
KoreaZJ
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Quote:
Originally Posted by 02Lightning View Post
I looked but didn't have any luck. Thanks!
HERE
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Unread 10-15-2012, 02:30 PM   #13
AVR2
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Quote:
Originally Posted by 02Lightning View Post
I looked but didn't have any luck. Thanks!
Just typing "jeep zj 1995 codes" into Google would have taken you to the information you wanted. When I do it, the first result is a thread on this forum with all the codes listed...
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Unread 10-23-2012, 07:03 PM   #14
papitt
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I'm going to respond to this As so I can go back to it . My printer is down at this time.
Skitter Joe is supposed to bring the DRBII from work . But he hasn't showed yet.
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Unread 11-29-2012, 10:59 PM   #15
monkey79
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Can you offer any more help as to what tge tranny code 26 means?
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