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Jerry, Master Mechanic
Category: Jeep
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Experience:  ASE Master...30+ years...Shop owner..engine builder..collision structural repair
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My 2006 Jeep Wrangler Unlimited started shifting hard into

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My 2006 Jeep Wrangler Unlimited started shifting hard into 2nd (auto) a few days ago. I had a buddy run codes on it and came up with 218 (trans temp sensor) and 714 (intermediate temp sensor) what could cause this, and how should i go about getting it fixed. Is it an easy plug in sensor and will just changing that sensore make it shift better?
Hello and welcome to Just, Super mechanic here. About your vehicle.

The code 218 will normally be the thing that set the 714 and yes, that could very well be the sensor. You will want to be sure that the engine is not running hot and the trans fluid is full. The valve body would have to come out to replace the sensor though. It is part of the trans range sensor.




The transmission temperature sensor (2) (Fig. 257) is located in the transmission range sensor (1) and communicates transmission sump temperature to the TCM.

The transmission range sensor (TRS) has an integrated thermistor that the TCM uses to monitor the transmission's sump temperature. Since fluid temperature can affect transmission shift quality and convertor lock up, the TCM requires this information to determine which shift schedule to operate inch The TCM also monitors this temperature data so it can energize the vehicle cooling fan(s) when a transmission overheat condition exists. If the thermistor circuit fails, the TCM will revert to calculated oil temperature usage.

A failure in the temperature sensor or circuit will result in calculated temperature being substituted for actual temperature. Calculated temperature is a predicted fluid temperature which is calculated from a combination of inputs:
  • Battery (ambient) temperature
  • Engine coolant temperature
  • In-gear run time since start-up




  1. Remove valve body assembly from vehicle.


Remove the manual shaft seal (1) (Fig. 253).


  1. Remove manual shaft/TRS retaining screw (1) (Fig. 254).
  2. Slide TRS off of manual valve shaft.


  1. Install the TRS (2) to the manual shaft. Make sure TRS locating pin rests in manual valve bore slot.


  1. Install the TRS/manual shaft retaining screw (1) (Fig. 255) and torque to 5 Nm (45 inch lbs.) torque.


  1. Install the manual shaft seal (1) (Fig. 256).
  2. Install valve body to the transmission.

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