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DPF vs AdBlue delete – what’s legal in 2025?
“Should I delete the DPF, the AdBlue system, or both?” That question lands in my inbox daily—especially now the 2025 emissions tweaks have hit the UK statute book. Remove the wrong bit and you could face £1,000–£2,500 fines under the updated Road Vehicles (Construction and Use) Regs. Keep reading for…
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What to Do If Your Car Won’t Start Due to AdBlue Issues
Dash shows a yellow AdBlue lamp and a countdown like “No start in 500 miles” or “Service AdBlue”? Even with a full tank, some vans refuse to fire once the lock is active. The good news: **not every case needs parts**. This guide explains why it happens, what you can…
AdBlue Consumption Too High? Five Causes and On-Site Checks
Your van gulped a full 10-litre can of AdBlue last week, and the dash already wants more. At £15 a fill that stings—but the real worry is a looming no-start lock if the SCR ECU believes fluid is vanishing without lowering NOx. RAC’s 2025 fleet study shows abnormal AdBlue use…
Peugeot P20EE AdBlue tank fault – fast mobile fix
7 a.m., A50 lay-by outside Stoke. A Peugeot Boxer fridge van sits idling while the driver scrolls panic posts on his phone. The dash flashes P20EE – SCR efficiency below threshold; a “No start in 700 km” countdown has already begun. The dealer quoted two weeks and £2,100 for a…
Mercedes Sprinter AdBlue fault codes – P20E8 to P204F explained
Sprinter drivers love the van but hate the blue DEF lamp. Since 2021 I’ve cleared more than 250 Sprinter AdBlue faults around Stoke-on-Trent, and the P-code gang is almost always the same: P20E8, P20E9, P13DF, P204F, U029E. Mercedes’ own November 2024 technical bulletin lists them as the top warranty claims…
Top 5 AdBlue Fault Codes Across Peugeot, Citroën and Ford Vans
Modern Peugeot, Citroën and Ford vans often suffer from recurring AdBlue fault codes. While these codes look confusing on a scan tool, they all point to common problems inside the SCR system. Here’s a breakdown of the top five we see in 2025, what they mean, and how they’re fixed…
Ford Transit AdBlue Problems: The Complete 2025 Fix Guide
If you own a Ford Transit or Transit Custom and you're dealing with AdBlue warning lights, limp mode, or that dreaded countdown message, you're not alone. Ford Transit AdBlue problems are among the most common issues we see at AdBlue Specialist, and in this complete 2025 guide, we'll explain exactly…
Mercedes OM651 / OM654: P13DF Heater vs P20E8 Low Pressure
Mercedes OM651/OM654: P13DF Heater vs P20E8 Low Pressure If your Mercedes diesel shows P13DF or P20E8, the SCR system is warning that AdBlue heating or pump pressure isn’t working as expected. These codes often appear together and can quickly lead to “No Start in 500 miles.” Here’s how to tell…
When P207F Isn’t Bad Fluid – Over-Concentration Myths Busted
When P207F Isn’t Bad Fluid – Over-Concentration Myths Busted If your van or car shows a P207F AdBlue fault, the first advice you’ll usually hear is “drain and refill the tank.” But in many cases, the AdBlue itself isn’t the problem. Let’s look at what really triggers this code and…
SPN 4354 Explained — DEF Line Heater 1 for Van Workshops
SPN 4354 Explained: DEF Line Heater 1 for Van Workshops If you’ve scanned a van showing SPN 4354 FMI 5, 6, or 18, it means the system can’t heat AdBlue fast enough. Known as “DEF Line Heater 1 Fault,” this issue often causes cold-start dosing errors and countdown warnings. Here’s…