My transmission is not shifting why?

Tiny
PSJ011777
  • MEMBER
  • 2013 DODGE CARAVAN
  • 3.6L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 78,000 MILES
Van not shifting after third gear, it stays rev'd high and will not shift out of third gear.
Do you
have the same problem?
Yes
No
Wednesday, December 26th, 2018 AT 9:44 AM

53 Replies

Tiny
KEN L
  • ADMIN
Hello,

It sounds like you have a turbine shaft speed sensor that is not working right which may or may not trigger a trouble code. Here is a guide to help us run the codes and the location of the sensor below:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Was this
answer
helpful?
Yes
No
Thursday, December 27th, 2018 AT 6:07 PM
Tiny
PSJ011777
  • MEMBER
Did not show any codes when nbn I checked this morning, but I disconnected the battery and reconnected it after twenty minutes and it has ran fine all day. If it happens again I'll update.
Was this
answer
helpful?
Yes
No
Thursday, December 27th, 2018 AT 7:21 PM
Tiny
KEN L
  • ADMIN
Okay it sounds like the TIPM could be going out here it its location so you can check it out. If you need to replace it the unit self initializes so no programming is necessary. Use 2CarPros anytime, we are here to help. Please tell a friend.
Was this
answer
helpful?
Yes
No
Friday, December 28th, 2018 AT 9:27 AM
Tiny
PSJ011777
  • MEMBER
It just happened again and this time it shows a code of P0845.
Was this
answer
helpful?
Yes
No
-1
Friday, February 1st, 2019 AT 7:05 AM
Tiny
KEN L
  • ADMIN
P0845 Transmission Fluid Pressure Sensor/Switch B Circuit is the code which will make the transmission not shift. Here is the location of the sensor so you can check it out in the diagrams below check the electrical connector at he sensor as well. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Was this
answer
helpful?
Yes
No
Saturday, February 2nd, 2019 AT 1:13 PM
Tiny
PSJ011777
  • MEMBER
So I checked the sensor/relay and the switch plugged into the transmission which that was a pain to get off. They both looked fine, cleaned both, ohmed out the relay and it ohmed out to 63ohms. Battery was pretty bad so I cleaned that too.
Was this
answer
helpful?
Yes
No
Saturday, February 2nd, 2019 AT 3:11 PM
Tiny
PSJ011777
  • MEMBER
New symptom, if you drive it and hit the brakes hard the whole car shuts off like it stalls out.
Was this
answer
helpful?
Yes
No
Saturday, February 2nd, 2019 AT 3:18 PM
Tiny
KEN L
  • ADMIN
Does it do it every time? after a long drive? Now it sounds like the TCC is not releasing or being held on. Here are the wiring diagrams to help see how the system works. You can see that the solenoid pressure switch assembly can be causing these issues. Here are diagrams so you can swap the unit out to see what happens.
We can scan the CAN to see what comes up as well here is a video showing the job being done.

https://youtu.be/InIlnsjOVFA

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Was this
answer
helpful?
Yes
No
Sunday, February 3rd, 2019 AT 12:02 PM
Tiny
VJBUCK007
  • MEMBER
  • 2008 DODGE CARAVAN
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 17,300 MILES
P0882 code is saying, the ECM has detected less than 3 volts at the transmission control relay output circuit.
Was this
answer
helpful?
Yes
No
Thursday, May 20th, 2021 AT 3:57 PM (Merged)
Tiny
KASEKENNY
  • EXPERT
Hi VJBuck007,

More than likely you have a wiring issue. Assuming this is your only code, I would suspect the T15 circuit is shorted. I attached the test you need to follow to figure it out. It also has a theory of operation that gives a pretty good idea what is happening.

Let me know if you need more assistance.
Was this
answer
helpful?
Yes
No
Thursday, May 20th, 2021 AT 3:57 PM (Merged)
Tiny
BAHAMA_KATE
  • MEMBER
  • 2005 DODGE CARAVAN
  • 265,000 MILES
Replaced speed sensor and the throttle position control sensor. Fluid good. Just changed oil/filter. When I crank the van all the box lights around the parking reverse etc light up and stay lit. Even when I put it in gear but the speedometer doesn't work and while driving it seems like its not shifting. I had the engine light checked and the error code "P0891" came up. I don't know what to do but this is my only vehicle.
Was this
answer
helpful?
Yes
No
Thursday, May 20th, 2021 AT 3:57 PM (Merged)
Tiny
CARADIODOC
  • EXPERT
There are separate diagnostic fault codes in the Transmission Computer. You need a scanner to read them. When the computer detects a problem it defaults to "limp" mode which keeps it in second gear to allow you to drive slowly to a repair shop without needing a tow truck.

In this case the cause of it going into limp mode is going to be electrical, (vs. Slippage in one of the clutch packs), because all of the shift indicator lights are lit up. The fault code(s) will indicate the circuit or system that needs further diagnosis.
Was this
answer
helpful?
Yes
No
+1
Thursday, May 20th, 2021 AT 3:57 PM (Merged)
Tiny
BAHAMA_KATE
  • MEMBER
The error code P0891 is: TCM power relay sense circuit high.

Also. Is limp mode bad for my van? Will it do damage if driven in limp mode? If need be(financial restrictions) how long could it be driven in limp mode?

Why does it not always go into limp mode? Sometimes I've cranked it and everything is normal light wise (engine light still on) but it shifts when rpms are too high (3-4 rpms) and its a hard shift. Like someone learning to drive a stick for the first time.

Thank you so much for your help so far!
Was this
answer
helpful?
Yes
No
Thursday, May 20th, 2021 AT 3:57 PM (Merged)
Tiny
CARADIODOC
  • EXPERT
You will not hurt the transmission by driving in limp mode but you will destroy the engine. Limp mode was designed in so you could drive slowly to a repair shop without needing a tow truck. A safe speed is up to 20 or 25 miles per hour. How long do you want to drive that slowly?

I have read about people who didn't understand what was happening and they tried to drive 65 mph in second gear, then were angry with Chrysler when the engine flew apart. No passenger car engine is designed to go that fast. Race car engines can go that fast with the hope they will hold up for 500 miles.

The reason the transmission works sometimes is you get it out of limp mode by turning off the ignition switch and restarting the engine. When it goes into limp mode again intermittently, either there is an intermittent electrical problem, usually a corroded splice or loose terminal in a connector, or there is slippage taking place in one of the clutch packs. Years ago, before Chrysler was the first to introduce this design in 1989, transmissions would give you a year or two of warning that the clutch plates were wearing out. Shifts were mushy instead of crisp and solid, and "engine runaway" was common. That's were the engine would speed up during an up-shift until the next gear finally locked up.

With this design, those clutch plates still wear out at the same rate, and the transmission still will need to be rebuilt at about the same mileage, but you don't get that year or two of warning. The Transmission Computer watches the volume of fluid it takes to apply each clutch pack for the various gears. When it sees one is taking more fluid, meaning the plates are worn down, it will engage the next higher gear during an up-shift, like normal, but it will delay releasing the previous gear for a fraction of a second. That produces a solid shift that feels like when the car was new, ... Until the day it can't update any further. That's when some slippage takes place and is detected, and it goes to limp mode.

At the mileage you listed, you're way overdue for a transmission rebuild, but given the age of the van I'm guessing it sees a lot of highway driving. There isn't much shifting going on so there won't be a lot of clutch plate wear. Regardless, the fault code you listed refers to an electrical problem and it could be as simple as a relay with bad contacts, or I suppose as serious as a computer that isn't recognizing the change taking place in a signal voltage. Your mechanic will have a diagnostic manual that will spell out the troubleshooting steps. If you take it to a transmission specialty shop, they will have seen this before and will need relatively little diagnostic time to come up with a repair estimate.

Be aware there are some shops that will automatically want to sell you a transmission rebuild because that is what they do, and given the mileage they may be able to justify their recommendation, but there is another test they can do if they have legitimate concerns. Chrysler built in some diagnostic software into the Transmission Computers. What you're interested in for this is called the "clutch volume index", (CVI). That is a set of four numbers corresponding to the number of ccs of fluid it takes to apply each of the four clutch packs. As the plates wear down, it takes more and more fluid to fill in behind them to apply each pack. An experienced transmission mechanic can tell by those numbers how much life is left in them. If they're close to being used up, he will recommend a rebuild along with diagnosing and solving the electrical problem. If you decline the rebuild, you are very likely to find the transmission will work perfectly fine after the electrical problem is fixed. That would incline you to think the mechanic was trying to rip you off by pushing the rebuild. In fact, he is typically looking out for your best interest in the long run. He knows that for most people that slippage I talked about is going to start to occur real soon. If you haven't had any transmission trouble up to now, that is proof your case is different due to lots of highway driving. It's entirely possible you may get another year or two or three out of it before a rebuild is needed.
Was this
answer
helpful?
Yes
No
+5
Thursday, May 20th, 2021 AT 3:57 PM (Merged)
Tiny
NEW_TO_DODGE
  • MEMBER
  • 2005 DODGE CARAVAN
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 83,700 MILES
Today while coming home my check engine light came on and seemed to run okay until I got into the driveway. I pulled the negative battery lead to clear the code and it didn't come back. An hour later I went to the store and the light came back and the van will not leave first gear. There is no slipping I can feel and going into reverse is pretty good. I checked the tranny fluid at the dipstick and it is pink, no burning smell and didn't see any metal. It did have a bunch of little air bubbles in it, but I assume that is from driving it 5 miles home in 1st gear making it hot. I haven't had a chance to read the code(s) yet. Any ideas would be appreciated to get me started. Thanks.
Was this
answer
helpful?
Yes
No
Thursday, May 20th, 2021 AT 3:58 PM (Merged)
Tiny
BMRFIXIT
  • EXPERT
Most likely its the tranny solenoid pack need to get the codes cycle key on off on off on read trouble codes in the odometer area and let me know what you have


https://www.2carpros.com/forum/automotive_pictures/99387_Graphic9_24.jpg

Was this
answer
helpful?
Yes
No
+9
Thursday, May 20th, 2021 AT 3:58 PM (Merged)
Tiny
NEW_TO_DODGE
  • MEMBER
I read the code from the odometer area and it is giving me a P0700 and nothing else. What does that refer to? Thanks.
Was this
answer
helpful?
Yes
No
Thursday, May 20th, 2021 AT 3:58 PM (Merged)
Tiny
BMRFIXIT
  • EXPERT
P0700 is a general code for tranny it just saying that you have an issue in the tranny and the TCM have codes have to get the TCM scanned for codes you need the help of a scanner here good luck let me know this guide will help.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
Was this
answer
helpful?
Yes
No
Thursday, May 20th, 2021 AT 3:58 PM (Merged)
Tiny
NEW_TO_DODGE
  • MEMBER
I got the van back from the shop today and the wire harness underneath the fuse block and battery had corroded causing my problem. The wires from the transmission control relay had broken causing the non shift problem. All is well now.
Was this
answer
helpful?
Yes
No
+4
Thursday, May 20th, 2021 AT 3:58 PM (Merged)
Tiny
MR RANDY
  • MEMBER
  • 2003 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 84,000 MILES
A engine light come on, had it checked out and they said to change the input and output sensors. I did this and engine light is still on and the transmission is stuck in like first gear. HELP !
Was this
answer
helpful?
Yes
No
Thursday, May 20th, 2021 AT 3:58 PM (Merged)

Please login or register to post a reply.

Sponsored links