I was recently tasked with looking at a vehicle which had the dreaded 500-miles-or-less-untilthe-vehicle-cannot-be-started warning on the dash display. We have all been there before with this sort of issue. This is a typical warning you will see on vehicles fitted with an AdBlue emission system if there is a fault present. The vehicle in question was a Range Rover Evoque 2016 2.0TDI. The customer who brought the vehicle to me was a trade customer. They advised that the vehicle originally came into them for repair for an engine warning light which intermittently illuminated. The fault code was for Nitrogen Oxide (NOX) sensor 2 no signal. I started by 28 AFTERMARKET JUNE 2023 TECHNICAL www.aftermarketonline.net IT’S EVOQUE-ATIVE A Range Rover Evoque with a wide array of fault codes pertaining to the AdBlue system was the cause of much recent head-scratching for Ryan carrying out a full system scan of the vehicle as I would routinely do. The result was multiple fault codes stored in the engine management system control module relating to the AdBlue system. Due to having so many codes stored, I checked all the relevant freeze frame data for each code and then erased them. Following this, I attempted to carry out a road test, but a fault code returned almost immediately for no communication present with NOX Sensor B. Signal and communication Armed with this information, I thought it would be a fairly straightforward diagnosis. However, I was wrong. It never BY Ryan Colley, Elite Automotive Diagnostics
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