Conditions for Running the DTC

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Cadillac Escalade EXT. However, it is still accessible from the selected car via links, so may be relevant.

P0851

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.

P0852

No TP DTCs P0121, P0122, P0123.
No OSS DTCs P0722 or P0723.
No MAF DTCs P0101, P0102, or P0103.
No MAP DTCs P0106, P0107, or P0108.
Engine Speed is greater than 400 RPM.