Volvo Bus B8R recall: EMS Software Bug on M33B release
Yes – some of these vehicles are being recalled
- What's wrong
- 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…
- What to do
- Contact a Volvo Bus dealer to book the free repair. Volvo retailer will Reprogram the affected ECUs.
Source: Driver and Vehicle Standards Agency (DVSA)
Check your reg on DVSA ↗
What’s wrong
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.
The fix
Volvo retailer will Reprogram the affected ECUs.
Vehicles affected
| Model | Built from | Built to | Vehicles |
|---|---|---|---|
| B8R | 10 Jun 2013 | 22 Jan 2015 | 2 |
How to check your vehicle
Use the official DVSA checker with your registration number to see if your exact vehicle is included. If it is, the manufacturer should have written to the registered keeper. The repair is free, even if you bought the vehicle second-hand.
Updated 21 November 2024. This page summarises an official notice. Details can change – always follow the official notice.