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4L60E Limp Mode Please Help!!!!

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Old 05-14-2015, 02:25 PM
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Default 4L60E Limp Mode Please Help!!!!

Today I was going to drive to autozone and the car shift really firm really into "R" or reverse. I didn't think was that big of a deal, as I continued to drive the car feels really sluggish as if it was starting into 3 and shifting into 4th and it won't shift 1st and 2nd. I ran the codes; there are 10 different codes and the ones that are related with the transmission are: P0785 & P1860.

P0785: 3-2 Shift Solenoids (or solenoids in general)

P1860: Manufacturer Control Transmission


The car started doing this problem today (the transmission has tranny fluid).

Any ideas? ('99 Trans Am A4)

I just moved the car literally moved the car right now to fix the parking (I was double parked) and the transmission didn't shift hard into reverse like it did this morning. I then decided to drive around the complex to make sure it was driving right; the car shifted fine too and I floored it hard and apparently 1st gear was working again. I guess now is are the solenoids malfunctioning or it's just something else?

Last edited by LTX_Alex; 05-14-2015 at 02:44 PM.
Old 05-14-2015, 03:24 PM
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It could be the shift solenoids but I would check the easy stuff first. Verify the connector on the trans didn't come loose or the wiring isn't damaged. You could also verify that you have 12V at the connector with the key on. I would start there first to figure out if its an electrical or internal problem.

There are a lot of different things that can cause those codes including mechanical failure or just a bad electrical connection. When I first started my car after the LS1/4l60e swap it threw several trans codes and was in limp home mode...I found that I didn't have the connector seated in correctly. Luckily it was an easy fix for me hopefully yours is too.
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Old 05-14-2015, 04:25 PM
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Well what were the other codes. Sometimes you have to think outside the box man. Stuff like the maf and knock sensors effect the trans and how it reacts.
Old 05-14-2015, 04:31 PM
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Fix the engine codes first. Some engine codes will cause the trans to go into limp mode. You may still need to address the P0785: 3-2 Shift Solenoids code, once all engine codes have been repaired. Address the lowest number codes first, then clear, recheck for codes and go to the next lowest code if any reset.
Old 05-14-2015, 05:40 PM
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Originally Posted by bbond105
Fix the engine codes first. Some engine codes will cause the trans to go into limp mode. You may still need to address the P0785: 3-2 Shift Solenoids code, once all engine codes have been repaired. Address the lowest number codes first, then clear, recheck for codes and go to the next lowest code if any reset.
These are all the codes and some were repeated twice by the scanner:
P0785
P1153
p1416
P0443
P0449
P0785
P1860
P1416
P1153
Old 05-14-2015, 05:53 PM
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Can you list the definitions out for us lazy people...
Old 05-14-2015, 06:01 PM
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Originally Posted by 01ssreda4
Can you list the definitions out for us lazy people...
Lol... Here they are.

P0785: 3-2 Shift Solenoids

P1153: Bank 2 Sensor 1

p1416: Check Valves on The Exhaust Manifold

P0443: EVAP Purge Solenoid Control Circuit

P0449: EVAP Purge/ Vent Solenoid Circuit Condition

P0785: X2

P1860: Manufacturer Control Transmission

P1416: X2

P1153: X2



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