At Kernowsport, we’re often asked to work on vehicles that other tuners simply won’t touch—and the Isuzu Grafter N35 is a perfect example.
We were proud to be one of the first specialists in the UK to successfully carry out an AdBlue delete on the Grafter N35 LCV, and it’s fair to say this platform did not give up its secrets easily.
Why the Isuzu Grafter N35 Is So Challenging
Unlike most light commercial vehicles, the Grafter N35 runs two separate ECUs:
- Engine ECU
- AdBlue / ACM (Aftertreatment Control Module)
Both units must be modified for a successful AdBlue solution—and crucially, both ECUs must be physically removed from the vehicle.
The engine ECU is particularly awkward, buried deep beneath the cab and secured with security bolts, making access time-consuming.
The AdBlue ECU isn’t quite as bad, but Isuzu didn’t make life easy there either, protecting it with a steel anti-tamper plate.
The very first Grafter we completed took nearly two full days, as we had to reverse-engineer the system and develop a reliable solution from scratch.
Vehicle Off the Road for a Month
This particular Grafter had been off the road for over a month, completely unable to start due to AdBlue system faults. For a working vehicle, especially in Cornwall, that’s lost time and lost income.
Once both ECUs were modified, they had to be reinstalled into the vehicle so that the AdBlue system could be fully reset, all fault codes cleared, and live communication restored.
This final step is critical—without it, the system will not initialise correctly.
A Clean Dashboard and a Working Vehicle Again
Despite the labour involved and the complexity of working with two separate control units, the end result speaks for itself.
As you can see from the images, the Grafter now shows a clean, green dashboard with no warning lights, no countdowns, and no restrictions—ready to get back to work where it belongs.
Isuzu AdBlue Specialists in Cornwall
Jobs like this are exactly why customers and garages across Cornwall turn to Kernowsport when others say “no”.
If you’re running an Isuzu Grafter, or any commercial vehicle suffering from AdBlue faults, no-start conditions, or persistent warning lights, we can help.
👉 Contact Kernowsport to book an AdBlue solution
👉 Learn more about our AdBlue & emissions services
👉 Explore our LCV tuning and ECU solutions
👉 See more specialist case studies in Our Work
Complex vehicles. Proven solutions. Fully mobile across Cornwall.
















