Medium DVSA Vehicles
Volvo Bus recalls B8R — Ems software bug on m33b release
Full details on the official government website →
⚠ What You Should Do
Volvo retailer will Reprogram the affected ECUs.
Recall Details
Defect: Last EMS/ACM SW release introduced a bug in the Regeneration Management system on some B8R and B5LH/TL vehicles. This bug increases the AHI flow at start of regeneration resulting in too much fuel being injected into the muffler. As a consequence there is a risk of very high temperatures inside the muffler with a risk of a thermal event.
Remedy: Volvo retailer will Reprogram the affected ECUs.
Vehicles affected: 2
DVSA Recall Reference: R/2024/464
Make: VOLVO BUS | Model: B8R
To check if your specific vehicle is affected, visit the DVSA vehicle recall checker, select your vehicle make and model, and look for recall reference R/2024/464.
Why This Product Is Dangerous
Last EMS/ACM SW release introduced a bug in the Regeneration Management system on some B8R and B5LH/TL vehicles. This bug increases the AHI flow at start of regeneration resulting in too much fuel being injected into the muffler. As a consequence there is a risk of very high temperatures inside the muffler with a risk of a thermal event.