Conditions For Running The DTC

WARNING: This page is about a different car, the 2005 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

The vehicle must be equipped with the VICS. This system is available only on export vehicles (UE9) and is dealer installed.
The navigation radio must detect a power mode transition from OFF-ASLEEP to ON.
The navigation radio does not set this DTC if B1327 or B1328 is current.