B1102Airbag unit supply voltage too low

• Hyundai/Kia code · Airbag (SRS)
• Lights a warning lamp

How the car detects it

The airbag control unit measured less than about 9 V. While an airbag fault is stored, the affected airbag or pretensioner may not deploy in a crash. Have it repaired before relying on it. Never probe airbag connectors with a meter: that can fire the airbag.

What you may notice

• Airbag warning light

Likely causes

• LikelyWeak battery or charging fault
• PossiblePoor supply or ground connection

Sources

• static.nhtsa.gov › INRD-EA19001-76579.pdf · official document
• youcanic.com › hyundai-fault-code-dtc

Backed by an official manufacturer document.

From Obdaryn's Hyundai/Kia pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.