AdBlue Repair Cost UK 2025: Complete Price Guide
How much does AdBlue repair cost? Pump, sensor, tank & heater prices explained. Plus: when to repair vs delete.
AdBlue Repair Cost at a Glance
| AdBlue Component | Typical Cost | Time Required | Permanent? |
|---|---|---|---|
| AdBlue Pump Replacement | £400-£800 | 2-3 hours | ✅ Yes (5-7 years) |
| NOx Sensor Replacement | £300-£700 | 1-2 hours | ✅ Yes (5-7 years) |
| AdBlue Heater Replacement | £200-£400 | 1-2 hours | ✅ Yes (5-7 years) |
| AdBlue Tank Replacement | £600-£1,200 | 3-4 hours | ✅ Yes (5-7 years) |
| AdBlue Injector/Nozzle | £250-£500 | 1-2 hours | ✅ Yes (5-7 years) |
| AdBlue Sensor | £150-£300 | 30-60 mins | ✅ Yes (5-7 years) |
Prices here are typical UK market ranges, for guidance only. They are not our prices. The real cost depends on many things, including the vehicle, the fault, parts and labour, so we’ll only give you a price once we’ve diagnosed the problem.
SCR System Fault – Repair or Replace?
“SCR system fault” rarely means the whole system has failed. The SCR system is the tank and pump, the dosing injector, the catalyst, two NOx sensors, temperature and pressure sensors, and the wiring between them. A fault in any one of them can make the ECU report the whole system as failed.
Most SCR faults are fixed by repairing or replacing one of those parts: a sensor, the wiring, the pump or the injector. Replacing the catalyst itself is only needed when it is physically damaged, blocked or contaminated, usually after a long time running with a dosing fault left unfixed. Get the failed part confirmed before agreeing to a quote for a “full SCR replacement”.
AdBlue Pump Replacement Cost: £400-£800
The AdBlue pump is the most common failure on diesel vans. It’s responsible for injecting AdBlue into the exhaust system to reduce emissions.
Why AdBlue Pumps Fail
- 💧 Crystallization: AdBlue freezes in winter, damaging pump internals
- 🔧 Wear & tear: Pumps typically fail after 80,000-120,000 miles
- ⚡ Electrical issues: Wiring faults prevent pump activation
- 🚫 Contamination: Dirty fuel or water in AdBlue tank damages pump
AdBlue Pump Replacement Cost by Vehicle
- 🚐 Ford Transit: £400-£600 (most common)
- 🚐 Mercedes Sprinter: £500-£800 (expensive parts)
- 🚐 Peugeot Boxer: £400-£650
- 🚐 Citroën Relay: £400-£600
- 🚐 Vauxhall Vivaro: £350-£550
- 🚐 VW Transporter: £450-£700
Our mobile service: We replace your pump on-site. No need to tow your van to a garage. Same-day appointments available most weeks.
NOx Sensor Replacement Cost: £300-£700
The NOx sensor monitors nitrogen oxide emissions. When it fails, you’ll see a warning light and limp mode.
Common NOx Sensor Faults
- 🔴 Warning light on dashboard
- ⚠️ “Emissions system fault” message
- 🐌 Limp mode (reduced power)
- ❌ Difficult to start
- 💨 Rough idle
NOx Sensor Cost by Vehicle Make
- 🚗 Mercedes: £400-£700 (most expensive)
- 🚗 BMW: £350-£650
- 🚗 Audi: £300-£600
- 🚗 VW/Audi Group: £300-£550
- 🚗 Ford: £250-£450
- 🚗 Peugeot/Citroën: £250-£400
AdBlue Tank Replacement Cost: £600-£1,200
AdBlue tank replacement is one of the most expensive repairs. Tanks rarely fail, but when they do, replacement is necessary.
When Do AdBlue Tanks Fail?
- 🔨 Physical damage (accident, impact)
- 💧 Corrosion (rust from moisture)
- ❌ Cracking (age, stress)
- 🚫 Faulty heater element inside tank
AdBlue Tank Replacement Cost
- 🚐 Ford Transit: £600-£900
- 🚐 Mercedes Sprinter: £800-£1,200
- 🚐 Peugeot Boxer: £650-£950
- 🚐 Citroën Relay: £600-£900
- 🚐 VW Transporter: £700-£1,000
Why so expensive? Tank replacement requires removing fuel tank, draining system, and reprogramming ECU. Labour-intensive job.
AdBlue Heater Replacement Cost: £200-£400
The AdBlue heater prevents freezing in winter. When it fails, AdBlue crystallizes and damages the system.
Signs Your AdBlue Heater Has Failed
- ❄️ “AdBlue crystallized” warning in winter
- ⚠️ Emissions system fault (winter only)
- 🚫 Vehicle won’t start in cold weather
- 💧 Limp mode during cold months
Cost by Vehicle
- 🚐 Most vans: £200-£400
- 🚐 Premium brands (Mercedes, BMW): £300-£500
Prevention tip: Never add anything to AdBlue. Get the heater checked before winter and keep the tank topped up with AdBlue from a sealed container.
AdBlue Delete Cost vs Repair Cost in the UK
A delete is often quoted for less than a big repair, but on a road-going van the price is not the deciding factor. A delete is not legal on UK roads, it is an MOT fail if emission control equipment is missing or obviously modified, it must be declared to your insurer, and it does not fix the fault that caused the warning.
See our repair vs delete guide and is an AdBlue delete legal? before you decide.
AdBlue Repair Cost FAQs
Q: How much does AdBlue pump replacement cost?
A: Across the UK, AdBlue pump replacement is typically £400–£800 depending on the make and model. Mercedes and BMW tend to cost more. The real cost depends on the vehicle and the fault, so we’ll confirm a price once we’ve diagnosed it.
Q: Can I repair AdBlue system myself?
A: Not recommended. AdBlue system repairs require specialist diagnostic equipment, ECU programming, and system bleeding. DIY attempts often cause more damage. Our mobile technicians handle it safely on-site.
Q: How long does AdBlue repair take?
A: Most AdBlue repairs take 1-3 hours depending on the component. Pump replacement: 2-3 hours. Sensor replacement: 1-2 hours. Heater replacement: 1-2 hours. We complete most jobs same-day with no downtime.
Q: Is AdBlue delete cheaper than repair?
A: A delete is often quoted for less than a big repair, but on a road-going van it is not legal, it is an MOT fail if the equipment is missing or obviously modified, and it must be declared to your insurer. See our repair vs delete guide.
Q: Will AdBlue repair void my warranty?
A: Only if your van is under manufacturer warranty. Most commercial vans (2+ years old) are out of warranty. Once out of warranty, a repair won’t affect it. Check your paperwork to confirm.
Q: How often do AdBlue systems fail?
A: AdBlue pumps typically fail every 2-3 years on high-mileage vans. Sensors last 4-5 years. Heaters fail in winter if not maintained.
Q: What’s the most common AdBlue fault?
A: AdBlue pump failure is one of the most common, followed by NOx sensor faults and, in winter, heater faults. Pump failures often cause limp mode and a no-start countdown.
Q: Can I drive with an AdBlue fault?
A: Technically yes, but not recommended. Your van will enter limp mode (reduced power, poor acceleration). You’ll get warning lights and may fail MOT. Get it repaired or deleted within 24-48 hours.
How much does AdBlue delete cost in the UK?
A software delete is often advertised at £150–£250, but price is not the deciding factor on a road-going van: a delete is not legal on UK roads and must be declared to your insurer. See our repair vs delete guide.
Why Choose I Fix AdBlue for Your Repair?
Mobile Service
We come to you. No need to tow your van to a garage. We work on-site across Leicester, Nottingham, Derby & East Midlands.
Same-Day Appointments
Most repairs completed same-day. Minimal downtime. Get back on the road quickly.
Expert Technicians
300+ AdBlue repairs completed. We’ve seen every fault code. Diagnostic expertise you can trust.
Quick Response
Call 07349821999. We respond within 2 hours. Most appointments booked within 24-48 hours.
Areas We Cover
Mobile AdBlue repair service across Leicester, Nottingham, Derby & East Midlands:
Don’t see your area? Call us anyway — we may be able to help. 📞 07349821999
Get Your AdBlue Repair Quote Today
Tired of AdBlue faults? Get a transparent quote. Same-day service available most weeks.
Mobile service across Leicester, Nottingham, Derby & East Midlands. 300+ jobs completed. 5-star rated.
