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.
2017 Kia Optima EXFACTORY OEM SERVICE PROCEDURE
Smart Junction Block DTCS
SMART JUNCTION BLOCK DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC B1602 | 00: CAN ERROR |
| DTC B1603 | 00: CAN BUS OFF |
| DTC B2352 | 00: Dedicated DRL LH Circuit Short to Ground |
| DTC B2353 | 00: Dedicated DRL RH Circuit Short to Ground |
| DTC B2510 | 00: Head Lamp High RH Circuit Short to Ground |
| DTC B2511 | 00: Head Lamp High LH Circuit Short to Ground |
| DTC B2512 | 00: Head Lamp Low RH Circuit Short to Ground |
| DTC B2513 | 00: Head Lamp Low LH Circuit Short to Ground |
| 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 Front Left Lamp Short To Ground |
| DTC B2523 | 00: Turn Signal Rear Left Lamp Short To Ground |
| DTC B2524 | 00: Turn Signal Front Right Lamp Short To Ground |
| DTC B2525 | 00: Turn Signal Rear Right Lamp Short To Ground |
| DTC B2542 | 00: Static Bending Lamp LH Short to Ground |
| DTC B2550 | 00: Static Bending Lamp RH Short to Ground |
| DTC B2559 | 00: Front Fog Lamp Right Circuit Short to Ground |
| DTC B2563 | 00: Front Fog Lamp Left Circuit 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 |
| DTC B2600 | 00: High Head Lamp LH Open Circuit |
| DTC B2601 | 00: High Head Lamp RH Open Circuit |
| DTC B2602 | 00: Low Head Lamp LH Open Circuit |
| DTC B2603 | 00: Low Head Lamp RH Open Circuit |
| DTC B2604 | 00: Bi-Function Head Lamp LH Open Circuit |
| DTC B2605 | 00: Bi-Function Head Lamp RH Open Circuit |
| DTC B2606 | 00: Front Fog Lamp LH Open Circuit |
| DTC B2607 | 00: Front Fog Lamp RH Open Circuit |
| DTC B2608 | 00: Turn Signal Lamp Front LH Open Circuit |
| DTC B2609 | 00: Turn Signal Lamp Front RH Open Circuit |
| DTC B260A | 00: Turn Signal Lamp Rear LH Open Circuit |
| DTC B260B | 00: Turn Signal Lamp Rear RH Open Circuit |
| DTC B260C | 00: Stop Lamp LH Open Circuit |
| DTC B260D | 00: Stop Lamp RH Open Circuit |
| DTC B260E | 00: Static Bending Lamp LH Open Circuit |
| DTC B260F | 00: Static Bending Lamp RH Open Circuit |
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.