P2227 - Engine Cranking: Notes

The ECM detects, when the engine is cranking, that the BARO sensor signal plus a calibrated threshold is not within range of a model derived from the BARO sensor, the MAP sensor, and the boost pressure sensor for more than 2 seconds.

P2227 - Engine Running Rationality Test

• The ECM detects, when the engine is running, that the BARO sensor signal has increased or decreased by greater than 10 kPa from the previous ignition OFF, and the BARO sensor is not within a calibrated range of the boost pressure sensor for greater than 4 seconds continuously or 50 seconds cumulative.

  OR

• The ECM detects, when the engine is running, that the BARO sensor signal has increased or decreased by greater than 5 kPa within 20 seconds, and the BARO sensor is not within a calibrated range of the boost pressure sensor for greater than 4 seconds continuously or 50 seconds cumulative.