Suggests a wiring problem to the Manifold pressure sensor (TMAP), possibly a poor connection. I think the TMAP on your car is located on the big black plastic circular (about 1.5 in dia) boost pipe that passes near the fuel filter. Check the connector and wiring first IIRC a couple of people have said they removed the TMAP sensor from the boost pipe and found it all gunged up, and gave it a careful clean out with solvent and that cure their problems (but I dont know is the errror codes were the same). The Tmap sensor is been cleaned couple of times but no difference .