DTC P1129: Manifold Absolute Pressure (Map) Higher Than Excepted

Start engine and run at 3000 RPM with no loads and transmission in Park or Neutral, until radiator fan comes on. Allow engine to idle. Using scan tool, check manifold absolute pressure. If manifold absolute pressure is 12.8 in. Hg (43.3 kPa) or less, problem is intermittent, system is okay at this time. If manifold absolute pressure is more than 12.8 in. Hg (43.3 kPa), replace MAP sensor.