Conditions for Running the DTC: P1685

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

No DTCs P0716, P0717, P0722, or P0723.
The transmission output shaft speed is greater than 200 RPM for greater than 200 seconds.
The torque converter clutch (TCC) slip speed is equal to or greater than 120 RPM for 200 seconds or greater.
DTC P1685 has not failed this ignition cycle.