What are the causes of the Buick P0317 trouble code?

[VonFinley]

P0317 is defined as rough road hardware not present, which may indicate a fault in the ignition system. The following are the causes of the Buick P0317 trouble code: 1. The electronic control module detects cylinder misfires by monitoring changes in crankshaft rotation speed. However, wheel speed variations caused by rough road conditions can also lead to changes in crankshaft speed, thereby affecting misfire detection. 2. The Anti-lock Braking System (ABS) and Traction Control System (TCS) can determine whether the vehicle is driving on rough roads based on signals from wheel speed sensors. If the system detects severe rough road conditions that significantly impact misfire detection, it will notify the electronic control module to disable misfire detection to prevent recording incorrect fault information.