Transmission problems. Have codes. Need Help Please! - JeepForum.com
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post #1 of 36 Old 03-01-2018, 10:41 AM Thread Starter
GreenYankee
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Transmission problems. Have codes. Need Help Please!

I purchased a 2006 Jeep Grand Cherokee, It is a 4WD, V6 3.7L Laredo, and the check engine light is on. The vehicle hesitates from drive to reverse intermittently. The RPM needle will move up for a moment and then the vehicle will go. We used an OBDII sensor and scanned for the codes. It gave me these three:

P0730 - Incorrect gear ratio.
P0700 Transmission Control System (Malfunction Indicator Lamp Request)
P0732 - Gear 2 Incorrect Ratio

Where should I start? All help would be so very greatly appreciated. My brother is mechanically inclined, but we were hoping for some pointers on where to start. The vehicle has 150,000 miles on it.


Last edited by GreenYankee; 03-01-2018 at 10:53 AM.
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post #2 of 36 Old 03-01-2018, 11:03 AM
keggles
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@JeepCares I think there is a TSB out for something like this, has something to do with PCM and TCM programming it sounds like. I also think I just saw an article on here with, but I dont remember where it was.

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post #3 of 36 Old 03-01-2018, 01:23 PM Thread Starter
GreenYankee
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Hi! Thanks for the response. I will search for TSB's for this issue!
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post #4 of 36 Old 03-01-2018, 02:51 PM
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Have you checked the fluid level and condition? Low fluid can cause this issue. I can't remember if the 06's still have a trans dip stick.. if not you can search this forum as people have come up with good ways to check the fluid level on the nag1 trans.

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post #5 of 36 Old 03-12-2018, 08:03 AM Thread Starter
GreenYankee
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So we finally had a nice day that wasn't freezing! I purchased the special dipstick for it and we got the vehicle up to temperature and checked the fluid. It was definitely low. Went through the process to fill it correctly and the check engine light is now gone! We cleared the codes and the check engine light has not come back on. Just out of curiosity... how long will the code be stored in the computer once it is cleared? How many drive cycles will I need to drive it before that is completely gone?

thanks for your help with this!!
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post #6 of 36 Old 03-12-2018, 03:44 PM
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Quote:
Originally Posted by GreenYankee View Post
So we finally had a nice day that wasn't freezing! I purchased the special dipstick for it and we got the vehicle up to temperature and checked the fluid. It was definitely low. Went through the process to fill it correctly and the check engine light is now gone! We cleared the codes and the check engine light has not come back on. Just out of curiosity... how long will the code be stored in the computer once it is cleared? How many drive cycles will I need to drive it before that is completely gone?

thanks for your help with this!!
If you cleared the codes with a scanner, then the codes in the trans control module should be clear too.

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post #7 of 36 Old 03-13-2018, 06:24 AM
Nejeep
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Since the fluid level was low it must be leaking somewhere unless it was recently serviced and under filled. The most common leak location is the transmission cooler lines near the radiator. If the lines are wet by the hose crimps thats likely your problem. There are several discussions on that repair here on JF.

I expect the stored codes will be gone after 1 or 2 drive cycles or immediately if you use a scanner to clear them.

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post #8 of 36 Old 03-16-2018, 12:09 PM Thread Starter
GreenYankee
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I will check the transmission cooler lines when I get out of work, thank you so much for the help!

We used an OBD scanner to clear the codes, and drove it for a few drive cycles as well just to be sure.
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post #9 of 36 Old 04-21-2018, 04:26 AM
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My jeep grand Cherokee Laredo 3.7L 05 is getting code u0404 p0700 and one more Transmission module it says
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post #10 of 36 Old 04-21-2018, 04:31 AM
Jayreals
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I need help with my jeep grand Cherokee Laredo 3.7L 05 it has 128,000 p0700 u0404 and i get Transmission module I don't understand why I put a new intake air pipe I forgot about the Airflow sensor so it been off for like 6mons I just put it back I didn't it 2 drive it yet
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post #11 of 36 Old 04-21-2018, 04:35 AM
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And it feels like I don't have Breaks right after I put new I pay 9,000$ for it had 97,000 when i got it i need this car i love this car i have to fix soon anything i try or check I'm willing to listen
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post #12 of 36 Old 05-11-2018, 09:13 AM Thread Starter
GreenYankee
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Thank you for your help! There was a tiny leak, but it wasn't the transmission cooler line connections. We found a pin hole leak in the transmission cooler fins, so we ordered a new one and will install it shortly. You folks are amazing! Thank you much!!!
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post #13 of 36 Old 06-02-2018, 12:08 PM
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I got a code p0717. I believe that is the trans input speed sensor. Any idea where it is located?
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post #14 of 36 Old 06-15-2018, 09:48 AM
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The Trans input speed sensor is on the side of the transmission towards the front. The output sensor is towards the rear.
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post #15 of 36 Old 04-17-2019, 10:23 AM
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Garage
Hello all,
Recently got a 2006 GC Larado with 170k miles, 3.7 V6 AWD. Owner said transmission got stuck in a gear once or twice on the highway, had to pull over and restart the vehicle. They had the trans "flushed" a few months back and aren't sure if it helped the problem or not.
Only OBDII code is P0700. So far its driving fine but I haven't taken it on the highway yet, just slow speeds around the city.
Thoughts?

I also have a 2007 GC Limited CRD with 130k miles. Are these the same transmissions or not? Most of my research says yes, but others disagree.

2007 Grand Cherokee Limited CRD, Denver,CO. Member since Jan. 2017.
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