PIN AS 1208519 - Caterpillar

Table 1
Diagnostic Codes    
CDL Code     Code Description     Comments    
100-13     Engine Oil Pressure Sensor : Calibration Required     The code is logged.
During a manual calibration, the pressure offset value is set to
0 kPa (0 psi).
During an automatic calibration, the pressure offset value is set to the previous calibration value.    
101-13     Crankcase Air Pressure Sensor : Calibration Required     The code is logged.
During a manual calibration, the pressure offset value is set to
0 kPa (0 psi).
During an automatic calibration, the pressure offset value is set to the previous calibration value.    
274-13     Atmospheric Pressure Sensor : Calibration Required     The code is logged.
During a manual calibration, the pressure offset value is set to
0 kPa (0 psi).
During an automatic calibration, the pressure offset value is set to the previous calibration value.    
1785-13     Intake Manifold Pressure Sensor : Calibration Required     The code is logged.
During a manual calibration, the pressure offset value is set to
0 kPa (0 psi).
During an automatic calibration, the pressure offset value is set to the previous calibration value.    
3385-13     EGR Intake Pressure Sensor : Calibration Required     The code is logged.
During a manual calibration, the pressure offset value is set to
0 kPa (0 psi).
During an automatic calibration, the pressure offset value is set to the previous calibration value.    
3387-13     EGR Differential Pressure Sensor : Calibration Required     The code is logged.
During a manual calibration, the pressure offset value is set to
0 kPa (0 psi).
During an automatic calibration, the pressure offset value is set to the previous calibration value.    The Electronic Control Module (ECM) checks the signals from certain pressure sensors when the keyswitch is turned to the ON position. The keyswitch must remain in the ON position for 30 seconds in order for the ECM to check the signals from the sensors.The signal from the atmospheric pressure sensor, crankcase pressure sensor, and NRS differential pressure sensor are compared to a value stored in the ECM. The appropriate fault code is active if either signal is outside of the specified range.The ECM compares the signal from the intake manifold pressure sensor with the signal from the atmospheric pressure sensor.The sensor signal must be within the specified range of the signal from the reference pressure sensor. If a sensor signal is out of the range, the corresponding fault code becomes active.
Table 2
Calibration Tolerances for Pressure Sensors    
CDL Code     Sensor Reference     Minimum Allowable Reference Value     Maximum Allowable Reference Value     Maximum Allowable Range For Calibration     Minimum Allowable Calibration Value     Maximum Allowable Calibration Value    
100-13     Atmospheric pressure sensor