Nissan Repair: p1800/p1102, valve position, absolute pressure

Question
what are the symtoms of these code's

Answer
Hi Dave -

Did not get the info on your vehicle, so I only can give you generics -

Code 1102 is MAP (Manifold Absolute Pressure) sensor either shorted or open.

Code 1800 is not listed in my book. Could be the TFP valve position circuit.

Hope this helps -
aloha
calvin