Symptoms
Possible Causes
- ECU installation issue: Incorrect physical installation may cause unstable communication.
- ECU Condition issue: The ECU may be in an unstable state, preventing proper communication.
Solution
- Check the physical installation – Ensure the ECU is installed correctly.
- Restart the ECU – Turn off power to the ECU and restart it before retrying the upgrade.
- IBU-BCM power reset – If the issue is related to the BCM, turn off the power and retry after 2 hours.
Additional Support
This error indicates that the vehicle’s ECU (Electronic Control Unit) cannot communicate properly, causing the upgrade to fail.
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If the problem continues after completing the basic troubleshooting steps (retrying the upgrade, checking the battery condition, etc.), please contact your NSC (National Distributor) for support.
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If necessary, we can provide a special file set with an extended ECU response time to help retry the upgrade.
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However, depending on the ECU Condition, the upgrade may still fail even when using the extended file.
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If you have already tried reinstalling or reconnecting the ECU hardware and the issue persists, ECU replacement or additional support from the vehicle manufacturer may be required, based on guidance from the automotive quality department.
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