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ERROR CODE P0720 ?

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bowtackle
New User

Nov 12, 2009, 7:43 PM

Post #1 of 4 (3847 views)
ERROR CODE P0720 ? Sign In
I have a 1998 Jeep Grand cherokee with a 4.0 6cyl and auto trans that is throwing a P0720 dtc. I have replaced the OSS on the back of the transmission, but still get the P0720. Is anybody out there famiiar with this problem that can recommend where else I should look to solve the problem?

Thanks very much for whatever help you can offer!


DanD
Veteran / Moderator
DanD profile image

Nov 13, 2009, 6:05 AM

Post #2 of 4 (3834 views)
Re: ERROR CODE P0720 ? Sign In
Just had a quick read through the test procedure for this code and there are so many variables; it hard to say what to do next? It’s all depending on the results of a test step’s outcome; which would determine what the next thing is to test.
For example in step 4 it says if the scan tool reading is 60MPH or less go to step 10; if scan tool reads 60MPH or above go to step 6. Steps 6 & 10 take you in two completely different directions.
So unless you have a proper scanner to read sensor data, a DVOM and a complete understanding of what the test procedures mean; I’m going to suggest taking the vehicle in to someone that has.

Dan.

Canadian "EH"






bowtackle
New User

Nov 13, 2009, 5:53 PM

Post #3 of 4 (3821 views)
Re: ERROR CODE P0720 ? Sign In
where can I find the test procedures?


DanD
Veteran / Moderator
DanD profile image

Nov 16, 2009, 4:50 AM

Post #4 of 4 (3811 views)
Re: ERROR CODE P0720 ? Sign In
Most of the aftermarket repair information suppliers (All Data & Mitchell) are now on line with a pay as you go format.
I haven’t looked in sometime now but possibly even the manufacturers may also offer this?

Dan.

Canadian "EH"









 
 
 






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