1997 Audi A6 Computer codes identified: P1101 P1106 P0306

P1101 and P1106 are all MAP sensor codes, try a new MAP sensor and make sure the vacuum lines to it and the vacuum tree are all right, also check the electrical connectors. May be time for a new MAP P0306 is cylinder 6 misfire. You should change the spark plug, wires, check the coil, coil pack, and listen to see if the injector is buzzing and putting out fuel, it can cause the MAP sensor codes, or it can be caused by the MAP sensor codes.