If your Citroën C4 is displaying “UREA Fault”, “Emissions Fault”, or a countdown-to-no-start warning, you’re not alone. The BlueHDi AdBlue system used in the C4 is well-known for repeated failures — even after expensive repairs at the dealership.
At Adblue Fix, we provide a permanent AdBlue delete and NOx sensor removal solution for the Citroën C4. With 15+ years of experience, mobile technicians across the South East, and a dedicated workshop in Slough, we offer a fast and reliable fix trusted by thousands of drivers.
Common Citroën C4 AdBlue Problems
C4 BlueHDi models commonly suffer from:
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“UREA Fault – No engine start in X miles”
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“Emissions Fault”
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AdBlue pump failure
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Faulty NOx sensors
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SCR system errors returning repeatedly
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Limp mode or reduced performance
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Expensive repair quotes from Citroën
These faults often come back even after replacing parts — costing owners thousands.
Our AdBlue delete solves all these issues permanently:
✅ No more AdBlue warnings
✅ No more countdown messages
✅ No limp mode
✅ No more NOx errors
✅ No AdBlue refills ever again
✅ Permanent ECU software solution (no cheap emulator boxes)
Common C4 BlueHDi Fault Codes We Fix
We permanently remove:
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P20E8 – AdBlue Pressure Too Low
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P20EE – SCR Catalyst Efficiency Below Threshold
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P229F – NOx Sensor Fault (Bank 1)
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P2BAD – NOx Out of Range
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U029D / U029E – Lost Communication with NOx Sensor
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P207F – Reductant Quality Fault
If your C4 shows any of these, our ECU remap will eliminate them permanently.
Our Process – Simple, Fast, Reliable
1. Full Diagnostic Check
We scan your ECU to confirm all AdBlue, SCR, and NOx-related errors.
2. ECU Reprogramming
We remove the SCR, NOx, and AdBlue systems directly in the ECU software.
3. Final Testing
No warnings, no countdown, no limp mode — and no AdBlue use.
⏱ Takes around 1 hour
🚐 Mobile service available
📍 Workshop available in Slough
Areas We Cover
We provide mobile AdBlue Delete service across:
Berkshire • Buckinghamshire • Essex • Hampshire • Kent • London • Oxfordshire • Surrey • Sussex
Why Citroën C4 Owners Choose Adblue Fix
⭐ 500+ five-star reviews
🛠 15+ years of BlueHDi expertise
🚐 Mobile service + workshop
💻 Permanent ECU software solution
🏆 Trusted by private owners & fleets across the UK
Your C4 is a great car — don’t let AdBlue issues keep you off the road.
Frequently Asked Questions
Will this stop the “No engine start in X miles” warning?
Yes — permanently.
What if my NOx sensor is already faulty?
No problem — our software removes all NOx-related functions.
Will this stop limp mode?
Yes — the car will run normally again.
Can you do this at my home or workplace?
Yes — anywhere across the 9 counties we cover.
Book Your Citroën C4 AdBlue Delete Today
Avoid endless repair bills and warning lights with a permanent solution.
📞 Call: 07356 057295
📍 Workshop in Slough + mobile service available
15+ years of experience — we are the trusted UK specialists for Citroën C4 AdBlue delete & NOx removal.