Codes p0172 and p0175?

The P0172 and P0175 codes indicate that the engine is running too rich. This means there is too much fuel and not enough air in the air-fuel mixture. The first thing to replace is the "Manifold Absolute Pressure and Temperature (MAPT) Sensor" which is difficult to get to because it is at the rear of the intake manifold so it will need to be removed for service of the sensor, (great spot for it right?). Anyway, here are the instructions on how to change it out to help fix the problem.