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Conditions for Setting the DTC

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.

B3873 01 

The body control module detects a short to B+ in the windshield washer pump relay control circuit.

B3873 02 

The body control module detects a short to ground in the windshield washer pump relay control circuit.

B3873 04 

The body control module detects an open or high resistance in the windshield washer pump relay control circuit.

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