I have a 2008 dodge ram bighorn my gauge, my coolant temperature gage stop working all of a sudden but I’ve tested the cluster the cluster is good. The gauge works fine when you do the test I’ve changed my sensor out twice what a pain in the butt and I change my thermostat and I still can’t get it to do anything .Please give me some help.

 

Unplug each end of the sensor wire and check if its low to no resistance. Are there any obd2 codes?