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Diagnostic Fault Information

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ P0622 P0621 - -
Control - L Terminal P0621 P0621 P0621 -
Signal - F Terminal P0622 P0622 P0622 P0622
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