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DTC Descriptors

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.
DTC B3843 02

Air Quality Sensor Circuit Short to Ground

DTC B3843 05

Air Quality Sensor Circuit High Voltage/Open

DTC B3843 08

Air Quality Sensor Circuit Performance - Signal Invalid

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