Conditions for Running the DTC: P0851

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Ignition voltage is between 9-18 volts.
No TCM DTCs P0601, P0602, P0603, or P0604.
No IMS DTCs P1825 or P1915.
No Communication DTCs U0001, U0100, U0101, U2105, or U2106.