HARNESS AS-CHASSIS 3155847 - Caterpillar

The Engine Control Module (ECM) detects the following conditions:
The intake valve actuator for cylinder 4 is not working properly.
The intake valve actuator is active.System Response:The ECM will log the diagnostic code and the ECM will trigger a snapshot. The check engine lamp will illuminate once this diagnostic code has been active for more than ten seconds. The ECM will use a default torque map.Possible Performance Effect:The engine will be derated while this diagnostic code is active.Note: Full power will be restored if the diagnostic code becomes inactive.Note: If this code is logged several times, the engine will be derated until the code is cleared with the Caterpillar Electronic Technician (ET). If the condition is not resolved, the engine will be derated again.Troubleshooting:Test Step 1. Perform the following diagnostic procedure: "Intake Valve Actuator Response - Test"Results:
OK - STOP