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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (Lighting System) >> Diagnostic Information and Procedures >> DTC B257A >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The BCM receives a mismatch signal between the headlamps OFF signal circuit, the headlamp switch headlamps ON signal circuit, and the park lamps ON signal circuit.

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