At Kernowsport, we regularly support main dealers and independent garages when vehicles fall outside their tooling capabilities or present unusual software issues.
This time, we were called to Helston to assist with a Ford Ranger 2.2TD that had developed DPF-related fault codes following a routine dealer software update.
When Dealer Updates Clash with Previous Modifications
Unbeknown to the dealership, this Ranger had previously undergone a DPF delete. When Ford’s latest software update was applied, it reintroduced emissions checks—triggering fault codes and illuminating the engine management light.
The owner was left with two options:
- Restore the vehicle to full factory emissions hardware
- Correct the software to match the existing setup
Unsurprisingly, they opted for the more cost-effective software solution.
Professional OBD Programming with the Right Equipment
Using our Alientech KESS 3, we carried out a safe and controlled OBD ECU write, ensuring the vehicle’s software correctly reflected its current configuration.
This job also marked the first proper outing of our fully equipped VW Caddy, allowing us to put our CTEK battery conditioner to work during live programming—maintaining perfect voltage stability throughout the process.
Reliable power management is essential during ECU work, and it’s one of the many small details that separates professional remapping from risky shortcuts.
Back on the Road – Fault-Free and Running Right
Despite a cold winter morning, the job itself was straightforward. Within a short time, the Ranger was:
✔ Free of fault codes
✔ Engine management light off
✔ Running exactly as it should
Another local vehicle saved from unnecessary downtime—and another example of why dealers and garages across Cornwall rely on Kernowsport.
Mobile ECU & DPF Software Specialists in Cornwall
We’re increasingly busy in Helston and Porthleven, often completing multiple jobs per week in the area. If your vehicle has:
- DPF or emissions software issues
- Problems after a dealer update
- Warning lights following previous modifications
We can usually resolve it quickly, safely, and on-site.
👉 Book mobile ECU diagnostics
👉 Learn more about DPF & emissions solutions
👉 Explore ECU remapping services
👉 View more real jobs in Our Work
Trusted by owners, garages, and main dealers across Cornwall — that’s Kernowsport.













