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.
DTC B1926 (KA/KC model) (2016 2017 2018 2019 2020)
DTC B1926 : Backup Control Antenna Open or Short
| DTC Description | DTC |
|---|---|
| B1926 Backup control antenna open or short |
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .
DTC (Backup Control Unit)
- Problem verification
-1. Clear the DTCs with the HDS.
-2. Touch the engine start/stop switch with the keyless remote. The buttons on the keyless remote should be facing you.
-3. While holding the keyless remote against the engine start/stop switch, do this procedure 10 times without pressing the brake pedal: Press the engine start/stop switch to select the OFF, ACC, ON, and OFF mode.
-4. Check for DTCs with the HDS.
DTC Description DTC B1926 Backup control antenna open or short Is DTC B1926 indicated?
YES
Replace the engine start/stop switch .
NO
Intermittent failure, the system is OK at this time. Check for loose or poor connections.
NO RELATED
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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.