Conditions for Running the DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.

P0685, P0686, P0687

Ignition Voltage=Greater than 11 V

Frequency the DTC runs=Continuously - After the running conditions are met

P0689

Ignition Voltage=Greater than 9 V
Engine Controls Ignition Relay Command=On

Frequency the DTC runs=Continuously - After the running conditions are met

P0690

DTC P0685 = Not set
Engine Controls Ignition Relay Command=Off - For greater than 2 s

Frequency the DTC runs=Continuously - After the running conditions are met

P1682

Engine Controls Ignition Relay Command=On
Ignition Voltage=Greater than 5.5 V

Frequency the DTC runs=Continuously - After the running conditions are met