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 B2276: ACCR Signal Circuit Malfunction [03/2017 - ]: Description
This DTC is stored when an input malfunction occurs in the ACC relay cut input signal circuit inside the certification ECU (smart key ECU assembly).
HINT:
When the battery cable is disconnected and reconnected, the power source returns to the mode it was in before the battery cable was disconnected.
| DTC No. | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B2276 | When an input malfunction occurs in the ACC relay cut input signal circuit inside the certification ECU (smart key ECU assembly) (1-trip detection logic*) |
|
Engine start operation is performed. |
- *: Only output while a malfunction is present and the engine switch is on (IG)
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
|
- |
| DTC No. | Data List Item | Active Test Item |
|---|---|---|
| B2276 | - | - |
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.