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.
2021 Genesis GV80 2.5T Advanced, AWDFACTORY OEM SERVICE PROCEDURE
Identity Authentication Unit DTCS
IDENTITY AUTHENTICATION UNIT DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B1603-00 | CAN BUS OFF (B-CAN) |
| B160F-00 | IAU Local CAN Bus Off |
| B165A-00 | BLE Module Fault |
| B165B-00 | IAU ECU I2C Error |
| B165C-00 | IAU Teaching Error |
| B166D-00 | Left Door Handle Module Fault |
| B166E-00 | Right Door Handle Module Fault |
| B167F-00 | BLE LIN Bus Off |
| B16C5-00 | CAN Time-Out DHL (Door Handle Module Left) |
| B16C6-00 | CAN Time-Out DHR (Door Handle Module Right) |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.