DTC P1129: MAP Sensor Signal Higher Than Expected
- Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
- Check the MAP with the scan tool or the HDS.
Is 36.9 kPa (277 mmHg, 10.9 in.Hg), 1.1 V, or less indicated?
- YES -Intermittent failure, system is OK at this time.
- NO -Replace the MAP sensor.