Hi,
been having problems only during cold weather with outside temp gage, problem has gotten worse this year, instead of temp reading i get dashed line and cel comes on at start up after ,a few miles it corrects itself then a couple days later cel goes off, next cold day it does it again, at least once a week now, put a new battery and temp sensor in and still have problem, any ideas?

 

Next time it happens, check to see what code is stored regarding the cel.

To check your Jeep JK Wrangler’s DTC codes:
1. Insert your key into the ignition, turn it to the ‘ON’ position but do not start the engine. Then, push the key into the ignition cylinder and while holding it in, turn it to the ‘OFF’ position and then back to the ‘ON’ position (3) times straight making sure to end with it in the ‘ON’ position. It is important to keep pushing in on the key to prevent it from catching at the different positions along the way.

2. If you do step #1 correctly, all your dash lights will illuminate and your odometer will show up as a series of (6) dashes. If your Jeep JK Wrangler has logged any DTC’s, they will be displayed soon after the dashes appear. Write down the DTC(s).

3. If your Jeep JK Wrangler has not logged any DTC’s, the dashes on your odometer will be followed by the message ‘-done-’. Turn your key to the ‘OFF’ position and you will in fact be done.

 

gives no codes just dashs then done,
and resets cel after a few trips

 

Try it with a code reader that connects to the OBDII port. I believe the self read feature may not show all the codes that a good reader will show.

I can't imagine the cel being on with no code, but I guess it could happen.

 

i'll stop by auto zone for a free reading next time its on, gave the high voltage p code for ambient temp after changing battery, then that went away and no more codes since just cel , and a messed up temp reading
thanks

 

The thermometer in my JK works fine, but I have a couple other remote-sensor thermometers that show a row of dashes when communication fails between the sensor and the thermometer. One time it was a broken wire; another time it was a failing sensor that eventually gave up completely and showed dashes until it was replaced.

When I lived where "cold" meant 20-30-40 below zero I never really expected anything to work, which worked out pretty well because a lot of stuff didn't.

 

this is on an 07 Jk with 103,000 miles on it, already replaced the sensor with no change ,gonna try following the wires next, thanks

 

today it messed up a lot and gave me a code this time P0073 same as 2 months ago, any ideas?

 

[h=2]P0073-AMBIENT AIR TEMPERATURE SENSOR CIRCUIT HIGH[/h]

• When Monitored: With the ignition on. Battery voltage greater than 10 volts.
  
• Set Condition: The Ambient Temperature Sensor voltage is greater than the maximum allowable voltage. One Trip Fault. Three good trips to turn off the MIL.

[TABLE]
[TR]
[TD="bgcolor: white, align: center"]Possible Causes
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]AAT SIGNAL CIRCUIT SHORTED TO VOLTAGE
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]AAT SIGNAL CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]SENSOR GROUND CIRCUIT OPEN
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]AMBIENT AIR TEMPERATURE SENSOR
[/TD]
[/TR]
[TR]
[TD="bgcolor: white, align: left"]TOTALLY INTEGRATED POWER MODULE (TIPM)
[/TD]
[/TR]
[/TABLE]

 

thanks for the info,any ideas on how to fix whats causing it ?