[old polaris tech]

If 5 volts going to MAF sensor harness connector(voltmeter connections at orange(red lead),frame ground or battery black lead) and air temp sensor in air box clean,no shorts in wiring,MAY JUST to be reflashed. Codes NOT always positive on speedo,but most of the problems I've found are shorts and have to be reflashed,only a couple sensors have been bad,BUT with efi anything possible. I posted earlier about a 500 that we hooked up and said to disconnect tps sensor connector,THEN said wiggle wires then said that problem solved and to HOOK BACK UP! STRANGE,but true! Can also check MAF sensor o-ring,if damaged,not sealing properly,can cause problems similar to tps malfuntion also. IF all fails let dealer hook up and find source of problem. New EFI machines getting harder for do it yourselfers.