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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.

B393B 04 

A PWM greater than 10% is sent but no current is read back.

B393B 0B 

Measured current is above threshold of 815 mA.

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