Case Study: Fuel Pressure Fault

17/01/20

By Lee Sharp

I know there are a few of you out there that are interested in using the PicoScope on trucks so I thought I'd share my process in this case study. I have done a few of these now and Pico has definitely improved the accuracy and speed of the diagnosis.

The truck is a 2016 Volvo FMX Tipper with the D11k engine. The vehicle continually entered limp mode and displayed an engine system failure warning on the dash. It came to me after the owner had spent thousands of pounds over the last two months with another workshop. They had been changing different parts to try to get to the bottom of the fault. The truck’s owner was a new customer for me and he contacted me based on a recommendation by one of my current customers, so the pressure was on to get it right the first time.

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