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.
Confirmation Procedure
- CHECK DTC PRIORITY
If DTC "C1B5B-04" is displayed with DTC "U1000-01", first diagnose the DTC "U1000-01".
Is applicable DTC detected?
YES
Perform diagnosis of applicable. Refer to DTC Description .
NO
GO TO 2.
- PERFORM DTC CONFIRMATION PROCEDURE
- Set the vehicle to READY.
- Operate the FEB system and drive.CAUTION: Always drive safely.
- Stop the vehicle.
- Perform "All DTC Reading" with CONSULT.
- Check if the "C1B5B-04" is detected as the current malfunction in "Self Diagnostic Result" of "ICC/ADAS".
Is "C1B5B-04" detected as the current malfunction?
YES
Refer to DTC Diagnosis Procedure .
NO
To check malfunction symptom before repair: Refer to Inspection .
NO
Confirmation after repair: INSPECTION END
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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