B1602Body CAN communication error

• Hyundai/Kia code · Body control

How the car detects it

A module on the body CAN network (body computer, smart key, cluster...) reports communication errors. A module that keeps the network awake can drain the battery overnight.

What you may notice

• Battery drained after standing
• Odd behaviour of body functions

Likely causes

• PossibleBody CAN wiring
• PossibleA failing module on the body network

Sources

• workshop-manuals.com › battery_drain · official document
• youcanic.com › hyundai-fault-code-dtc
• carmanualshub.com › kia-diagnostic-trouble-codes

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.