DTC P1128: Manifold Absolute Pressure (Map) Lower Than Excepted

Turn ignition on. Using scan tool, check manifold absolute pressure. If manifold absolute pressure is 16.0 in. Hg (54.1 kPa) or more, problem is intermittent, system is okay at this time. If manifold absolute pressure is less than 16.0 in. Hg (54.1 kPa), replace MAP sensor.