“Great speedy service, sorted my adblue, would highly recommend”
Steve Willis
Citroën Relay - AdBlue Delete & NOx Sensor Removal
Published 29 November 2025
If your Citroën Relay is displaying AdBlue warnings, SCR faults, or countdown-to-no-start messages, you already know how disruptive and expensive these issues can be. The BlueHDi system fitted in the Relay is prone to injector blockages, NOx sensor failures, and repeated dashboard errors, even after multiple replacements.
Why Choose AdBlue Expert?
Meet our approach- Experienced AdBlue technicians
- Home and workplace visits, subject to availability
- Lifetime warranty on eligible software
- No Fix, No Fee under our terms
CUSTOMER EXPERIENCES
Real Customers. Real Reviews. Real Peace of Mind.
Don't just take our word for it. Discover why drivers across England choose AdBlue Expert for specialist vehicle diagnostics, reliable service and professional support.
5.0/5 GOOGLE RATING • 299 REVIEWS
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Why Citroën Relay Owners Choose AdBlue Delete
At AdBlue Expert , we offer a lasting Citroën Relay AdBlue delete and NOx removal solution , designed to stop recurring AdBlue faults for good. With specialist experience , a Slough workshop, and mobile service across the South East , we provide a fast, reliable solution for fleet operators and private van owners alike. Why Citroën Relay Owners Choose AdBlue Delete The Relay is one of the UK's most popular large vans, but the AdBlue (SCR) system is notorious for repeated failures. Drivers often face limp mode, no-start countdowns, and high repair costs from dealerships, even after replacing AdBlue pumps, injectors, or sensors. Common Citroën Relay AdBlue Issues Include: " UREA Fault - No engine start in X miles " Repeated NOx sensor failures AdBlue injector or pump malfunctions Persistent SCR warnings Limp mode during deliveries or work Expensive Citroën dealer repair quotes Our AdBlue Delete Offers a Lasting Solution: No more AdBlue refills No more NOx fault codes No limp mode No countdown-to-no-start messages Lasting ECU programming (not a plug-in device) Common Relay BlueHDi Fault Codes We Remove P20E8 - AdBlue Pressure Too Low P207F - Reductant Quality Fault P229F - NOx Sensor Performance Fault P20EE - SCR Catalyst Efficiency Below Threshold U029D / U029E - Lost Communication with NOx Sensor Our ECU software lasting eliminates these recurring faults. Our Process - Fast, Professional & Reliable 1. Diagnostic Scan - We identify all AdBlue, SCR, and NOx fault codes. 2.
Common Citroën Relay AdBlue and NOx Faults
ECU Reprogramming - We remove the AdBlue, SCR, and NOx systems electronically. 3. Final Testing - Your Relay is verified to run smoothly: no warnings, no limp mode, no AdBlue use. Takes around 1 hour Mobile service available across the South East Workshop in Slough for drive-in appointments Areas We Cover Our mobile Citroën Relay AdBlue delete service covers: Berkshire Buckinghamshire Essex Hampshire Kent London Oxfordshire Surrey Sussex Why Choose AdBlue Expert? A five-star Google rating from verified reviews PSA BlueHDi expertise Mobile service across nine counties Workshop in Slough for local appointments Lasting ECU software solution - not a temporary plug-in device Trusted by private van owners, tradesmen, and fleet operators Frequently Asked Questions How long does a Citroën Relay AdBlue delete take? Around 1 hour. Will this fix NOx sensor errors lasting? Yes - the NOx system is fully removed in the ECU. Will it affect MOT testing?
Our Mobile Citroën Relay AdBlue Delete Service
No - MOT testers do not check AdBlue or SCR system directly. Can you perform the service at my home or workplace? Yes - our mobile engineers cover all counties listed above. Book Your Citroën Relay AdBlue Delete Today Stop wasting money on recurring AdBlue and NOx issues. Our lasting solution keeps your Relay running reliably. Call now: 07356 057295 Workshop in Slough + mobile coverage across Berkshire, Buckinghamshire, Essex, Hampshire, Kent, London, Oxfordshire, Surrey, Sussex With specialist experience , AdBlue Expert is the UK's trusted choice for Citroën Relay AdBlue delete & NOx removal. Customer Reviews Posted on Google dave simms Trustindex verifies that the original source of the review is Google.
What the Work Involves
Great service , very professional, re-mapped perfect, Highly recommend. Posted on Google Claire Yates Trustindex verifies that the original source of the review is Google. friendly and courteous - fixed my ad blur problem quickly great communication from all the team - i totally recommend them / thank you! Posted on Google Dean Smith Trustindex verifies that the original source of the review is Google. Came out prompt, professional service would definitely use again and recommend. Posted on Google Peter Davies Trustindex verifies that the original source of the review is Google. 5***** service and great job they do 100% recommended Posted on Google Baxter Priestley Trustindex verifies that the original source of the review is Google. Sorted out my ad blue and swirl flap faults. Quick turn around and great communication Posted on Google Dumitru Gheorghita Trustindex verifies that the original source of the review is Google.
Booking Your Citroën Relay Appointment
Really happy with the remap done on my car, polite, efficient service and would highly recommended Posted on Google Vincent Barry Trustindex verifies that the original source of the review is Google. Excellent service sorted out the problem with my van Posted on Google Trustindex verifies that the original source of the review is Google. Very good and quick service. The car feels much smoother. The brothers really took good care of me. i will definitely recommend them and i will be going back for a wheel refurb. Posted on Google Khenilson Oliveira Trustindex verifies that the original source of the review is Google. Great service. Super recommend Posted on Google Gary Styles Trustindex verifies that the original source of the review is Google. Excellent service, thanks guys Verified by Trustindex Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more Call Now Whatsapp Us Get A Free Quote Previous Citroën Dispatch - AdBlue Delete & NOx Sensor Removal Next Ford Ranger - AdBlue Delete & NOx Sensor Removal
Customer FAQs
Can you carry out an AdBlue Delete on my Citroën Relay at my home or workplace?
Yes. We provide mobile appointments at suitable home and workplace locations, subject to technician availability. Send your registration and postcode and we will confirm the options.
What AdBlue faults do you see on the Citroën Relay?
Common issues include AdBlue system warnings, SCR faults, NOx sensor errors and restart countdown messages. Tell us the exact dashboard message so we can check your vehicle before confirming any work.
How much does AdBlue Delete cost for a Citroën Relay -?
The price depends on your Citroën Relay -'s engine computer, whether ECU unlocking is needed and your location. Send your registration and postcode and we confirm a personalised quotation before booking.
Is the software work on my Citroën Relay - covered by a warranty?
Yes. The Lifetime Software Warranty applies to the software work on your Citroën Relay -. If the covered work develops a problem, we correct it again. Later software updates or recalls void the warranty, and callout charges are not covered.
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Share your registration, postcode and dashboard warning. We can consider the software options and give you a clear quotation.
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ADBLUE FAULT CODE CHECKER
AdBlue Warning Light or Fault Code? We Can Help.
Seeing an AdBlue warning, engine management light or unfamiliar fault code? These warnings can point to problems with your vehicle's AdBlue, SCR, UREA or NOx system. Browse common fault codes below, or contact our specialists for advice on the next step.
AdBlue Warning on Your Dashboard?
Send us your registration, postcode and diagnostic fault code. We'll check the details and explain the available mobile service options.
WhatsApp Quote · Citroën Relay - AdBlue Delete & NOx Sensor Removal
Get Your AdBlue Quote
Enter your registration, postcode and mobile number. We'll check your vehicle and reply with a quotation. You can add a photo of your dashboard warning in the WhatsApp chat.
Countdown about to hit zero?
Call or WhatsApp with the warning, miles remaining and where the vehicle is. Emergency callouts carry an additional charge, confirmed before dispatch.