Question about 2006 Jeep Grand Cherokee

1 Answer

Transmission doesn't shift, stays in one gear "limp home mode". Is this a module problem? It seems to cause MIL check engine light to come on. This happens sporadically.

Posted by on

  • bbrunetti May 12, 2010

    Someone else has suggested that it is in the valve body of ther trans itself and should be rebuilt. Does this sound correct?

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Jeep Master
  • 6,982 Answers

The point you are at now is when you should have a good transmission shop do a "ride along" scan test to determine if the problem is in a control unit or the trans itself. The control module takes information from the engine management system as well so if something such as your throttle position sensor on the throttle body has failed (or even the map sensor) the trans control may not allow proper shifting.
While it is possible to do continuity and individual component tests on the entire system,(to a point) the fastest and most accurate means of diagnosis is to have a shop do that for you. Then, if you want, do the actual repair work yourself!

Posted on May 12, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1993 hyundai sonata has check engine light on and is stuck in limp mode and wont shift out of second gear


the .pcm puts it in limp mode and it will stay in mode until light is turned off. You need to get the trouble code, repair it, erase the codes (with a scanner that retrieves the codes), and then you will be out of limp home mode.

Mar 23, 2014 | 2001 Hyundai Sonata

1 Answer

Car stays in 2nd gear all of the time. (Limp mode) Fix Engine light stays on, D green light blinks constantly for automatic transmission Honda Accord 2005


Ah, I see. You want to outsmart the computer? Right logic, wrong computer. I think the problem is not in the transmission, but it is the engine computer that has communicated with the transmission computer and put the car in limp-in mode. The fix engine light is sent from the engine computer, and this is the main computer in the car, the main drive train computer, if you will.
The short answer is yes it will reset, by just unhooking the battery. Won't do any harm. Start it up about an hour later, and be sure and let it warm up to normal operating temperature (closed loop) before you take it out for a test drive. Otherwise you may be miles from home in 2nd gear limp-in mode again.
The real fix is to talk to your car...like communicate with the computer and get those trouble codes read...talk to it nice, not the abrupt tone of the glaring idiot light, and maybe it will respond in a kinder, gentler easy to fix diagnostic code!!!!
Good luck.

Mar 19, 2012 | Honda Accord Cars & Trucks

1 Answer

Changed transmission computer still have code 605 wont shift out of 2nd gear


did you have pinion factor and quick learn performed on the trans module after replacement? if not then the trans won't shift correctly. also is the check engine light on with any engine codes in memory? the engine module may the trans stuck in limp-in mode(2nd gear).

Aug 10, 2011 | Chrysler PT Cruiser Cars & Trucks

1 Answer

My 1999 clk 320 suddenly will not shift out of 3rd gear, its been going good for 184000 miles and all service has been done by a mercedes mechanic


sounds like the transmission is in limp home mode where it won't shift out of second gear. this is a fail safe mode. If the check engine light is on too then its probably not seeing one of the speed sensors in the transmission. Just need to have the codes pulled in the transmission control module.

Oct 01, 2010 | 1999 Mercedes-Benz CLK

1 Answer

Starts out in 3rd gear


Trans shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or TCC lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on: Transmision is either in limp-home mode or has lost electrical power. If there are lots of error codes in the PCM, check the underhood fuse that powers the transmission, and if it pops again, look for a short in that circuit like an O2 sensor harness touching exhaust. Otherwise, check PCM codes for a particular fault in the transmission causing the PCM to put it in limp-home mode.
What is "limp-home mode" ? This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.
Before guessing at transmission problems, check the fluid level (car warmed up, engine running in Park on level ground) and have the PCM scanned for trouble codes FIRST. This guide is meant for problems that do not show up as PCM codes (like shift A&B solenoid failures, for example).
Thank you for using fixya and good luck

Apr 19, 2010 | 1994 Oldsmobile 88

1 Answer

Transmission will not shift into high gear


Before guessing at transmission problems, check the fluid level (car warmed up, engine running in Park on level ground) and have the PCM scanned for trouble codes FIRST. This guide is meant for problems that do not show up as PCM codes (like shift A&B solenoid failures, for example).
Also note that many problems that show up as transmission issues are actually PCM or electrical, and may be external to the transmission. Try a different PCM, and check for chafing where the cables come out of the PCM.
What is "limp-home mode" ? This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.
No 1st or 4th available; trans shifts 2nd to 3rd by itself in D or OD and locks the converter : ShiftA solenoid failed. Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.
Trans shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or TCC lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on: Transmision is either in limp-home mode or has lost electrical power. If there are lots of error codes in the PCM, check the underhood fuse that powers the transmission, and if it pops again, look for a short in that circuit like an O2 sensor harness touching exhaust. Otherwise, check PCM codes for a particular fault in the transmission causing the PCM to put it in limp-home mode.
Thank you for using fixya and good luck. Check all your fuses first to ensure it's not a simple as that before you take it to a transmission shop. Call around, most transmission shop will scan free of charge to inspect the condition of your transmission.

Apr 16, 2010 | 1998 Oldsmobile 88

1 Answer

Hi i have a 99 hyundia elantra my check engine light is on the codes are p1624,p0137,p0732and p0740 are these codes connected or different problems


As for p1624 this code is for the accent only.
p1613 means the same thing but for the elantra, the
code means malfunction indicator light(mil) signal
circuit input high volt. p0137 means ho2sensor high
voltage (fuel pressure out of range high) p0732 is a
transmission code. It means that due to a malfunction in the trans. circuit, the trans. will operate in limp mode meaning you have reverse and
one forward gear in this case 2nd gear. That brings
us to p0740 this code indicates a malfunction with
the damper clutch control solenoid at the trans. this
would cause the p0732 limp mode. But if your car
is not showing any of these problems, the cause may
be the engine control module or the transmission
control module. But this would have to be checked
with the proper test scanner. Hope this helps.

Feb 19, 2010 | Hyundai Motor 1999 Elantra

2 Answers

2002 Dodge Caravan with approx. 66,000 miles, check engine light came on, seemed to have stayed in 2nd gear. Could it be a pac solenoid transmission problem?


You need to find someone who can pull the codes from the transmission and see what kind of trans fault it is. If there is a fault in the trans the controller will put it into limp in mode which is 2nd gear locked. Won't shift out of 2nd...You need to pull the codes and see if it is internal in the trans or an external sensor-Good Luck

Oct 13, 2009 | 2002 Dodge Caravan

1 Answer

Shifting problem, automatic transmission


Does your check engine light come on when this happens? It's probably when your tranny goes into limp home mode. You should have 1st gear ( only if you shift it there manually) 3rd and reverse. You are probably experiencing the 3rd gear thing and are probably burning up all of the clutches when you accelerate and should probably take it into the shop before something worse happens. Sorry to be the bearer of bad news.

Aug 28, 2009 | 1999 Saturn SL

Not finding what you are looking for?
2006 Jeep Grand Cherokee Logo

393 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

76132 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...