Check engine light came on the other night and started flashing. Car seemed to sputter like a misfire. Took car in and had codes pulled and it said injector circuit condition-injector number 1 (told that cyl 1 was misfiring). So we checked the injector and if was fine along with the plug and wire for 1. Also checked the ignition coil and the part that they connect to. Used a noid light set and found that the num 1 cylinder has no electric going to it at all(all other cyl worked fine). When they pulled the codes one thing that came up was to check tps and circuit for failure. Is it possible to have the tps tested before buying one if thats not what is causing it. Any other problems that it could be as far as wiring or sensors that we could check or is this a problem with the main computer.