First time post. I have two 2007 GTX 155s that were sitting on their trailer in the back yard. Went to fire them up and they both give me 1 big beep followed by 4 fast beeps. Shows code P1656 on both machines. If it gives me the four fast beeps that reminds me of the key attached, does that mean the key and switch are ok? Is the problem in the wiring or ECU?? Thanks in advance.