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 Description
DTC DETECTION LOGIC
| DTC | CONSULT screen terms | DTC detection condition | |||
|---|---|---|---|---|---|
| (Trouble diagnosis content) | [Malfunction type] | ||||
| C1B89 | 13 | SPEAKER CIRCUIT (Speaker circuit) | [CIRCUIT OPEN] | Diagnosis condition | When engine is running |
| Signal (terminal) | - | ||||
| Threshold | ADAS control unit 2 detects driver assistance buzzer circuit open. | ||||
| Diagnosis delay time | 2 seconds or more | ||||
POSSIBLE CAUSE
- Driver assistance buzzer circuit
- Driver assistance buzzer
- ADAS control unit 2
FAIL-SAFE
None
DTC CONFIRMATION PROCEDURE
- CHECK DTC PRIORITY
CONSULT If DTC "C1B89-13" is displayed with DTC "U1000-01", first diagnose the DTC "U1000-01".
Is applicable DTC detected?
>>
Perform diagnosis of applicable. Refer to DTC Description .
>>
GO TO 2.
- PERFORM DTC CONFIRMATION PROCEDURE
- Start the engine.
- Operate the BSW or LDW system and drive.CAUTION:
Always drive safely.
- Stop the vehicle.
- Perform "All DTC Reading".
- Check if "C1B89-13" is detected as the current malfunction in "Self Diagnostic Result" of "ICC/ADAS 2".
Is "C1B89-13" detected as the current malfunction?
>>
Refer to Diagnosis Procedure .
>>
To check malfunction symptom before repair: Refer to Intermittent Incident .
>>
Confirmation after repair: Inspection End.
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.