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SCR System Explained: How AdBlue Really Works on a Diesel

SCR System Explained: How AdBlue Really Works on a Diesel AdBlue isn’t a fuel additive. It’s part of the SCR system that cuts NOx emissions in the exhaust. When something in that chain fails, you get warnings, countdowns, and “start prevented” messages. Call 07503 134 362 Book a Mobile Visit…

a close up of a car's exhaust pipe

AdBlue Leaks: Early Signs Drivers Often Miss

AdBlue Leaks: Early Signs Drivers Often Miss A small AdBlue leak rarely looks dramatic. It starts as a faint smell, a white crust, or a warning that comes and goes. Catch it early and you avoid bigger faults, breakdown risk, and repeat warnings. Call 07503 134 362 Book a Mobile…

black vehicle on brick road

AdBlue Level Sensor Faults: When the Gauge Lies

AdBlue Level Sensor Faults: When the Gauge Lies You topped up. The dash still says low. Or worse, it starts a countdown even though the tank is full. This guide explains why AdBlue level sensors misread, what you can check, and what actually fixes it. Call 07503 134 362 Book…

a pink car with a yellow license plate

Can AdBlue Go Off? Shelf Life, Storage, and Contamination Explained

Can AdBlue Go Off? Shelf Life, Storage, and Contamination Explained Got an old bottle in the boot or a half-used container in the garage? This guide explains if AdBlue can go off, what “contaminated” really means, and how bad fluid leads to warnings and countdowns. Call 07503 134 362 Book…

red Audi coupe

AdBlue Crystallisation: Symptoms, Causes, and How It Leads to Faults

AdBlue Crystallisation: Symptoms, Causes, and How It Leads to Faults Seeing white crust around the filler, under the van, or near the exhaust? That can be AdBlue crystallisation. This guide shows what it looks like, why it happens, and when it turns into warnings and countdowns. Call 07503 134 362…

car under building

AdBlue Warning After a Top-Up? Why It Still Shows and What to Do

AdBlue Warning After Top-Up? Why It Still Shows and What to Do You’ve topped up AdBlue and the dash still says “Top up”, “Emissions fault”, or starts a countdown. This guide explains the real reasons, the safe checks you can do, and when to book a mobile visit. Call 07503…

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Mercedes Sprinter AdBlue Problems: Owner’s Troubleshooting Guide

"DEF system see owner's manual. Starting prevented in 600 mi." If you own a Mercedes Sprinter (2010+ with BlueTEC), you've likely encountered this dreaded message at least once. Mercedes Sprinter AdBlue problems (called "DEF" – Diesel Exhaust Fluid – in North America) are frustratingly common, from the notorious DEF quality…

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Ford Transit AdBlue Problems: Common Faults and Quick Fixes

"AdBlue malfunction – service required. 500 miles to limited performance." If you drive a Ford Transit (2016+ Mk8) or Transit Custom (2012+ Mk2), you've probably seen this message at least once. Ford Transit AdBlue problems are among the most common issues we deal with in Stoke-on-Trent—from faulty quality sensors that…

water dew on silver Volkswagen car emblem

VW Crafter AdBlue Problems: Injector Faults and Reset Guide

"AdBlue system malfunction. Starting disabled in 2400 km." If you drive a VW Crafter (2017+ SY/SZ generation), you've probably seen this warning at least once. VW Crafter AdBlue problems are among the most frustrating in the commercial vehicle world—from the notorious AdBlue injector that blocks every 60,000–100,000 miles, to quality…

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Peugeot Boxer AdBlue Problems: Common Faults (2015–2025 Models)

"AdBlue fault – top up additive. 1200 km until engine won't restart." If you drive a Peugeot Boxer (2015+ Euro 6), you've probably seen this message at least once. Peugeot Boxer AdBlue problems are notoriously common—from the infamous P20EE fault code that appears even with a full tank, to AdBlue…

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