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Old 11-26-2011, 01:30 PM
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OK...that's the JTEC PCM method, which will also work.

1998-2002 (maybe more) Dodge trucks and Jeeps, put transmission in neutral, parking brake on, then do the key sequence 3 times ending with RUN.

Believe it or not, with some of the older PCM's, the first method I posted will work. It will also work with the 1999 - 2002 Caravan

Codes are displayed on the odometer.

On some cars, the codes will read out if the engine light is on - all you have to do is put the key into the RUN position.

Some time ago a guy posted up something about turning the truck on, putting it in reverse and backing up 3 feet...not sure if that works or not!

Last edited by erm; 11-26-2011 at 01:40 PM.
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Old 11-26-2011, 01:32 PM
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turning the key 3 times is the old school way to pull chrysler codes. didnt think that obd 2 did that anymore
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Old 11-23-2013, 12:01 AM
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Originally Posted by toddrod View Post
Alright, the check engine light came on again so I tried maddog's method. Unfortunately, I got no readings so i turned the key to off. I dont know how I came up with the idea but I turned the key back to on (without turning the motor) and then off again. I did this three times and the odometer read p0138. Found out I have a faulty o2 sensor. Try what I did if your having problems sourcing a trouble code, it may help.
Tried your idea on my 2000 1500 and it worked. Got a P1740 code? Any idea what that is?
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Old 11-23-2013, 07:32 PM
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Originally Posted by BamaDryver53 View Post
Tried your idea on my 2000 1500 and it worked. Got a P1740 code? Any idea what that is?
P1740-TCC O/D Solenoid its located in the transmission oil pan.
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