AdBlue repair case studies
Real vehicles, real fault codes, real outcomes. Each case study walks through the symptoms, diagnostic path, findings and permanent fix — so you can see exactly how we work before you book.
Ford Transit AdBlue Countdown — Diagnosis & Permanent Fix
2019 Ford Transit 2.0 EcoBlue 130 (Euro 6) · Reading, Berkshire
A panel-van fleet operator brought us a Transit with a 250-mile AdBlue countdown after two failed dealer 'resets'. Here is the full diagnostic path and the permanent fix.
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Mercedes Sprinter SCR Efficiency Fault — Full Investigation
2018 Mercedes Sprinter 314 CDI (OM651, Euro 6) · St Albans, Hertfordshire
A courier Sprinter on its third NOx sensor in 14 months — but the real fault was upstream. Here is how we traced it.
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Renault Master AdBlue Warning Light — Diagnosis & Fix
2020 Renault Master 2.3 dCi 145 (Euro 6d) · Watford, Hertfordshire
Steady amber AdBlue light, no countdown yet — and a 12-month-old van. Here is the full path from warning to permanent fix.
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Peugeot Boxer Emissions Fault — Investigation & Resolution
2019 Peugeot Boxer 2.2 BlueHDi 140 (Euro 6) · High Wycombe, Buckinghamshire
Intermittent limp mode, no warning lights at rest — a classic Boxer P2200 / P2202 pair, hiding behind a wiring fault.
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VW Crafter NOx Sensor Failure — Diagnosis & Repair
2019 VW Crafter 2.0 TDI 140 (Euro 6) · Aylesbury, Buckinghamshire
EML, AdBlue light, and an SCR efficiency code on a low-mileage Crafter. Standard fault — but the lessons in coding and adaptation reset are worth reading.
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