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.
2020 Genesis G90 3.3T Premium, AWDFACTORY OEM SERVICE PROCEDURE
Smart Junction Block DTCS
SMART JUNCTION BLOCK DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC B1602 | 00: CAN Line Error |
| DTC B1603 | 00: CAN Bus OFF |
| DTC B2352 | 00: Dedicated DRL LH SCG |
| DTC B2353 | 00: Dedicated DRL RH SCG |
| DTC B2510 | 00: Head Lamp High RH SCG |
| DTC B2511 | 00: Head Lamp High LH SCG |
| DTC B2512 | 00: Head Lamp Low RH SCG |
| DTC B2513 | 00: Head Lamp Low LH SCG |
| DTC B2517 | 00: Internal Tail Lamp Circuit Short to Ground |
| DTC B251B | 00: Bi-function Head Lamp RH Circuit Short to Ground |
| DTC B251C | 00: Bi-function Head Lamp LH Circuit Short to Ground |
| DTC B251D | 00: Stop Lamp Right Circuit Short to Ground |
| DTC B251E | 00: Stop Lamp Left Circuit Short to Ground |
| DTC B251F | 00: High Mounted Stop Lamp Short to Ground |
| DTC B2522 | 00: Turn Signal LH Front Short to Ground |
| DTC B2523 | 00: Turn Signal LH Rear Short to Ground |
| DTC B2524 | 00: Turn Signal RH Front Short to Ground |
| DTC B2525 | 00: Turn Signal RH Rear Short to Ground |
| DTC B258A | 00: External Tail Lamp Front Right Short Circuit to Ground |
| DTC B258B | 00: External Tail Lamp Front Left Short Circuit to Ground |
| DTC B258C | 00: External Tail Lamp Rear Right Short Circuit to Ground |
| DTC B258D | 00: External Tail Lamp Rear Left Short Circuit to Ground |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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