GREASE 6V2055 - Caterpillar

Which Generate This Code:The Electronic Control Module (ECM) detects one of the following conditions:
The turbocharger inlet pressure sensor was never calibrated.
Turbocharger inlet pressure is less than 45 kPa (6.5 psi) during a calibration attempt.
Turbocharger inlet pressure is greater than 111 kPa (16 psi) during a calibration attempt.
Turbocharger inlet pressure fluctuates more than 5 kPa (0.75 psi) during a calibration attempt.
Turbocharger inlet pressure differs more than 8 kPa (1.2 psi) from atmospheric pressure during a calibration attempt.
Active diagnostic codes are present for the turbocharger inlet pressure sensor during a calibration attempt.Test Step 1. Perform the following test: Engine Pressure Sensor - CalibrateResults:
OK - Stop.