Diagnostic Fault Information

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Park/Neutral Switch Circuit

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Operating Conditions: Ignition ON, gear shift lever in park or neutral position.
Park/Neutral Signal	P0851	P0851	P0852	-

Park/Neutral Position Switch - Engine Control Module

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Operating Conditions: Ignition ON. Parameter Normal Range: Park/Neutral or In-Gear.
Park/Neutral Signal	Park/Neutral	In Gear	In Gear	In Gear