Possible Fault Causes

A model is employed to calculate the VVT servo motor's temperature in the DME. The first stage occurs when it heats beyond a warning threshold (fault code #10819, fault class 2). This is 190°C (VVT motor temperature) and causes the VVT to revert to operation in its emergency mode. If the VVT motor were to overheat even further, the VVT system would be completely deactivated upon reaching the deactivation threshold (200°C VVT motor temperature). Overheated VVT motor (based on model calculations, no monitored figures). Defective VVT motor.