SEAL-RING 7D8226 - Caterpillar

PID 0102 FMI 04Conditions Which Generate This Code:The Engine Control Module (ECM) detects the following conditions:
The signal voltage from the boost pressure sensor is less than 0.2 VDC for more than one second.
The ECM has been powered for at least two seconds.System Response:The ECM will log the diagnostic code and the ECM will trigger a snapshot. The check engine lamp will illuminate while this diagnostic code is active. The ECM will default to 100 kPa (14.5 psi) for boost pressure.Note: The boost pressure that is displayed on the Caterpillar Electronic Technician (ET) is the default value for boost pressure minus the atmospheric pressure.Possible Performance Effect:The engine will experience low power when this diagnostic code is active.Troubleshooting:Test Step 1. Perform the following diagnostic procedure: "Engine Pressure Sensor Open or Short Circuit - Test"Results:
OK - STOP