# Trans - 2000 Chrysler Concord 2.7L

**URL:** <https://community.cartalk.com/t/trans-2000-chrysler-concord-2-7l/64277>\
**Category:** Maintenance/Repairs\
**Tags:** chrysler, concorde\
**Created:** [May 1, 2011, 12:55am UTC](https://community.cartalk.com/t/trans-2000-chrysler-concord-2-7l/64277 "2011-05-01T00:55:38Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![njdebra](https://avatars.discourse-cdn.com/v4/letter/n/898d66/32.png) [@njdebra](https://community.cartalk.com/u/njdebra)\
**Post date:** [May 1, 2011, 12:55am UTC](https://community.cartalk.com/t/trans-2000-chrysler-concord-2-7l/64277/1 "2011-05-01T00:55:38Z")

</div>

Having trans problem & got code P1790 with P0731. I believe I have to replace the output & input speed sensor. Anything else I may have missed here?

---

<div class="post-metadata">

**Author:** ![transman618](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/transman618/32/24_2.png) [@transman618](https://community.cartalk.com/u/transman618)\
**Post date:** [May 1, 2011, 5:26am UTC](https://community.cartalk.com/t/trans-2000-chrysler-concord-2-7l/64277/2 "2011-05-01T05:26:00Z")

</div>

Those two codes together indicate an internal transmission problem. Most likely a problem in either the 2-4 clutch or possibly the underdrive clutch. A speed sensor failure normally has a speed sensor fault code along with multiple gear ratio codes. You dont have this. Let a trans shop check it to be sure.

transman

---

<div class="post-metadata">

**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\
**Post date:** [May 1, 2011, 11:58am UTC](https://community.cartalk.com/t/trans-2000-chrysler-concord-2-7l/64277/3 "2011-05-01T11:58:43Z")

</div>

Transman618 Is A Transmission Repair Professional.  
His Advice Describes Am Experience I Had With A Chrysler 2.7L/Automatic.

The car was shifting improperly. The codes I had were:  
PO700 - Trans Control Malfunction  
PO715 - Input / Turbine Speed Sensor A Circuit Malfunction  
PO731 - Gear Ratio Incorrect 1st Gear  
PO733 - Gear Ratio Incorrect 3rd Gear  
PO734 - Gear Ratio Incorrect 4th Gear

Note : As an experiment, I tried resisting the advice to always replace the input and output speed sensors as a pair. I put in just the input sensor and it fixed the transmission very temporarily. Although I had no code for an output speed sensor, I found that replacing the output sensor after that fixed everything for good. These little plastic sensors are not very expensive.

I would follow Transman’s advice and have it checked by a professional.

CSA