Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC B251C-00: Bi-Function Head Lamp LH Circuit Short To Ground: General Description
2020 Genesis G90 3.3T Premium, AWDSECTION General Description
Once IBU*_BCM* receives a signal of Head Lamp switch, it sends the signal to SJB* by CAN communication. SJB* turns on Head Lamp.
NOTE:
IBU* (Integrated Body control Unit): "IBU CONTROL MODULE"
BCM*: Body Control Module
SJB* (Smart Junction Block): "IGPM_IPS CONTROL MODULE"
BCM*: Body Control Module
SJB* (Smart Junction Block): "IGPM_IPS CONTROL MODULE"
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.