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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 274 (Lighting System - DTC B3891 To DTC C0297 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B3950 or B3951: Rear Turn Signal Circuits >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

DTC B3950 01 and B3950 04 

The BCM detects an open/high resistance in the left rear turn signal control circuit.

DTC B3950 02 

The BCM detects a short to ground in the left rear turn signal control circuit.

DTC B3951 01 and B3951 04 

The BCM detects an open/high resistance in the right rear turn signal control circuit.

DTC B3951 02 

The BCM detects a short to ground in the right rear turn signal control circuit.

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