What's the symptom? Need a little information to know which path to follow. If you're like most do-it-yourselfers, you'll throw some sensors at it and hope to solve some problem. Your mechanic would connect a hand-held computer called a scanner and watch the sensor values while the engine is running before changing any parts and introducing more variables.
This type of fault code suggests the MAP and TPS are providing values that are within their normal limits, but the engine computer recognizes two values that can't occur at the same time. A typical example would be a low voltage reading from the Throttle Position Sensor, indicating your foot is off the accelerator, and a low voltage from the Manifold Absolute Pressure sensor at the same time, indicating heavy acceleration. Either reading by themselves are acceptable, but not both of them at the same time.
If you want to take an educated guess, replace the MAP sensor as it has a lot of electronics in it and is more likely to fail. The TPS is rather simple inside, and reliable. You will need to drive the car so the computer can relearn the characteristics of the new sensor. Until that happens, usually within a few miles after the engine is warmed up, performance might not be the best.
Wednesday, December 2nd, 2009 AT 5:07 AM