COVER-SCAVENGE PUMP 1W5994 - Caterpillar

Which Generate This Code:The Electronic Control Module (ECM) detects the following conditions:If the engine is not running, the following conditions must be met.
The actual injection actuation pressure remains above 3 MPa (435 psi) for at least three seconds.
Cold mode is not active.If the engine is running, the following conditions must be met.
The actual injection actuation pressure and the desired injection actuation pressure differ by more than 2 MPa (290 psi) for at least ten seconds.
The change in injection actuation pressure was not consistent with the change in the current to the control valve.
Cold mode is not active.System Response:The ECM will log the diagnostic code. The status of "Injection Actuation Pressure" on Caterpillar Electronic Technician (ET) will revert to a default value.
The engine may experience low power.Test Step 1. Perform the following diagnostic procedure: Injection Actuation Pressure Sensor - TestResults:
OK - STOP