Conditions for Running the DTC

WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The engine speed is more than 400 RPM.
The system voltage is between 10-18 volts.
DTC P0443 runs continuously once the above conditions are met.