So I replaced the TPS after I had to have it towed home and the TPD failed the test. It runs better than it did before, no dying going down the road. It still has a CEL on so I took it up to the O'rielly(who were very helpful this morning) and had it read. Kicked out codes 54 and 67.

54 oc ACT indicated -40�C (-40�F)/circuit open

67 o Neutral Drive Switch (NDS) circuit open; A/C or Defrost on (Manual) during test (operator error)

Having read that the Mix heat setting was on when that was tested so I can probably disregard 67.

Anyone have any experience with this particular code?

 

You don't need anyone to pull codes for you:



The first step in diagnosing ANY code is: confirm that the indicated condition actually exists. So get a digital multimeter and test the ACT.

 

So apparently that code will also appear if you don't have the sensor plugged into anything.