had a little time to do some random things to the supra today (fluids, checking hoses, random lookovers) and decided to see if it was throwing any codes without popping the CEL. sure enough code 51. my question is would it throw 51 for my AC being removed? i would hope it wouldnt be my TPS as i just changed it less than 2000 miles ago. anyone know if its common to have 51 with no ac? or a quick way to check if it is the TPS?