Check engine light

For the P0171 and P0174 and p0300 lean banks and random misfire the number one fix is intake gasket. But for the p1125 and p1295 those are throttle control codes it says check the engine wire harness under the intake manifold for being damaged by Heat. Also the code P1120 is for the throttle position sensor. The number one fix for that code is a bad throttle position sensor. That sensor can set the p1125 and p1295 codes as well. You would still have to check for a vacuum leak and I would check the throttle position sensor using live data readings on a scan tool or code reader.