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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.

B3843 02 

No PWM is detected and the signal is low.

B3843 05 

No PWM is detected and the signal is high.

B3843 08 

The sensor sends a 5% PWM signal indicating an internal sensor short circuit or open circuit.

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