
Ford Ranger DPF Software Fix in Helston
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: 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










