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.
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HOMESERVICE MANUALSKIA2015OPTIMA EXREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEX - OPTIMA (EXCEPT HEV)BODY CONTROL DTCSSMART JUNCTION BOX DTCS
2015 Kia Optima EX
Smart Junction Box DTCS
2015 Kia Optima EXSECTION Smart Junction Box DTCS
SMART JUNCTION BOX DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1602 | CAN Error |
| DTC B1603 | CAN Bus Off |
| DTC B2354 | Dedicated DRL SCG |
| DTC B250E | Dedicated DRL SCG |
| DTC B250F | Static Bending Lamp LH Short to Ground |
| DTC B2510 | Right Headlamp High Circuit Short To Ground |
| DTC B2511 | Left Headlamp High Circuit Short To Ground |
| DTC B2512 | Right Headlamp Low Circuit Short To Ground |
| DTC B2513 | Left Headlamp Low Circuit Short To Ground |
| DTC B2514 | External Tail Lamp RH Circuit Short To Ground |
| DTC B2515 | External Tail Lamp LH Circuit Short To Ground |
| DTC B2516 | Front Fog Lamp Circuit Short To Ground |
| DTC B2517 | Internal Tail Lamp Circuit Short To Ground |
| DTC B2518 | Turn Signal LH Front Open Circuit |
| DTC B2519 | Turn Signal LH Rear Open Circuit |
| DTC B2520 | Turn Signal RH Front Open Circuit |
| DTC B2521 | Turn Signal RH Rear Open Circuit |
| DTC B2522 | Turn Signal LH Front Circuit Short To Ground |
| DTC B2523 | Turn Signal LH Rear Circuit Short To Ground |
| DTC B2524 | Turn Signal RH Front Circuit Short To Ground |
| DTC B2525 | Turn Signal RH Rear Circuit Short To Ground |
RENDER: 1.0x
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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.