Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0730 sets when one of the following conditions occurs for 7 seconds:

The gear ratio is more than 2.97:1.
The gear ratio is 2.43:1 to 2.87:1.
The gear ratio is 1.62:1 to 2.33:1.
The gear ratio is 1.05:1 to 1.52:1.
The gear ratio is 0.75:1 to 0.95:1.
The gear ratio is less than 0.65:1.