Review the fault information
We check the registration, warning message, symptoms and stored diagnostic fault codes.
Workshop-Based Diagnostics & ECU Support
AdBlue, EGR & DPF ECU Solutions
Diagnostics-led support for warning lights, countdown messages, limp-mode issues and repeated system-related faults.
We assess the vehicle, stored fault codes and current system status before recommending the most suitable route. This may include further diagnosis, repair advice, resets, regeneration support or an appropriate ECU software solution.
AdBlue Solutions
EGR Solutions
DPF-Related Issues
Fault Diagnosis
In-House ECU Support
If possible, include a photograph of the dashboard message and any stored fault codes. This helps us provide more accurate advice before you travel to the workshop.
Common EGR-Related Symptoms
Diagnose the Cause Before Choosing the Route
Engine warning light
EGR flow or position codes
Reduced power
Limp mode
Poor throttle response
Carbon contamination
EGR System Diagnosis
EGR Delete Solutions
EGR-related warning lights and drivability problems are not always caused by the valve alone. We begin by reviewing the fault codes, symptoms and intended use of the vehicle before recommending the appropriate route.
The EGR system recirculates a controlled amount of exhaust gas into the engine to reduce certain emissions. Faults can involve the EGR valve, position sensor, cooler, wiring, airflow readings, intake contamination or related components.
Identify the appropriate route
Depending on the fault, the vehicle may require further diagnosis, cleaning, component repair or replacement.
Off-road software option where eligible
EGR-disable software is only considered for appropriate non-road, competition or motorsport applications.
Software does not remove existing carbon deposits or repair a failed valve, EGR cooler, wiring fault, boost leak or unrelated mechanical issue. Additional diagnostic or repair work is quoted separately where required.
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Important road-use restriction
Manufacturer-fitted emissions-control equipment is inspected during an MOT. Equipment that is missing, obviously modified or obviously defective can be recorded as a major defect. Our EGR-disable software service is therefore only offered for genuine off-road, competition or motorsport applications and is not supplied for vehicles used on public roads. The vehicle owner is responsible for confirming its intended use and compliance. See the current GOV.UK MOT guidance .
SCR & AdBlue Fault Support
AdBlue System Solutions
Diagnostics-led support for AdBlue warning messages, countdowns, no-start restrictions and system-related fault codes. We assess the vehicle’s current status before recommending repair, reset or an appropriate software route.
AdBlue warning message
No-start countdown
NOx sensor faults
Pump or pressure faults
Heater or injector faults
Reductant system codes
Diagnose the System
We review the registration, dashboard message, stored fault codes and previous repair history before advising on the next step.
- Full diagnostic scan
- Fault-code and status assessment
- Review of recent repairs
- Check for related engine faults
Check Countdown Status
An active mileage or no-start countdown must be identified and, where possible, reset before any supported ECU programming work.
- Remaining mileage or starts checked
- No-start status assessed
- Reset or initialisation attempted where supported
- Additional diagnostic work confirmed first
Recommend the Correct Route
The correct route may involve wiring diagnosis, component repair, sensor replacement, system reset or an eligible non-road software option.
- Repair or replacement advice
- Reset route where supported
- Vehicle-specific compatibility check
- Off-road software option where eligible
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Is a “No Start in X Miles” message showing?
Tell us the exact remaining mileage or number of starts when enquiring. Once the restriction threshold is reached, the vehicle may not restart. Do not assume that ECU programming alone will clear an already-active no-start status.
Send your registration and dashboard message
Include any stored fault codes and tell us whether a countdown is currently active. Additional diagnosis or reset work is quoted separately where required.
Software solution
£300
Send Fault Details
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Important road-use restriction
AdBlue/SCR equipment forms part of the manufacturer-fitted emissions-control system. Equipment that is missing, obviously modified or obviously defective can be recorded as a major MOT defect. Our AdBlue-disable software service is only offered for genuine off-road, competition or motorsport applications and is not supplied for vehicles used on public roads. The vehicle owner is responsible for confirming its intended use and compliance. See the current GOV.UK MOT guidance .
Diagnostics, Cleaning & DPF Support
DPF Solutions
Our main objective is to identify why the DPF is struggling to regenerate and retain the original filter wherever practical. DPF TerraClean is our primary cleaning route, supported by further diagnosis where another fault is causing the blockage.
Our Preferred Approach
Diagnose, Clean and Retain the Original DPF
A blocked DPF is often the result of repeated short journeys, failed regenerations, sensor problems, engine-temperature issues or another underlying fault. Cleaning the filter without addressing the cause may allow the problem to return.
DPF TerraClean
Fault Diagnosis
Regeneration Assessment
Original DPF Retained
Start Here
DPF Assessment
We review the fault codes, warning lights, regeneration history and available DPF data before recommending cleaning or further work.
- DPF and engine fault-code scan
- Soot-loading and regeneration review
- Pressure and temperature data where available
- Assessment of potential underlying faults
Diagnosis Available
Cleaning Route
DPF TerraClean
A dedicated TerraClean DPF cleaning process for suitable filters affected by accumulated soot and restricted flow.
- Vehicle suitability checked first
- Dedicated TerraClean DPF-cleaning equipment
- Filter retained on the vehicle where appropriate
- Post-clean checks and regeneration assessment
£
300
DPF TerraClean
Where Required
Further Diagnosis
If cleaning alone will not resolve the issue, we can investigate related faults or advise on off-vehicle cleaning and replacement.
- Sensor and wiring fault investigation
- Regeneration-prevention diagnosis
- Off-vehicle ash or oil cleaning route
- Replacement advice for damaged filters
Quoted Separately
i
DPF TerraClean is not suitable for every filter
The service is primarily intended to address accumulated soot and restricted flow. A filter that is physically damaged, melted, heavily contaminated with oil or loaded with non-combustible ash may require removal for specialist off-vehicle cleaning or replacement. Existing engine faults must also be addressed to help prevent the blockage from returning.
Send us your registration and DPF fault information
Include the dashboard warning, stored fault codes, recent repair history and whether the vehicle is currently in limp mode. We will advise whether assessment, TerraClean or further diagnosis is the best starting point.
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DPF removal is not a road-vehicle repair
Where the original DPF is damaged or cannot be cleaned, the compliant route for a public-road vehicle is repair or replacement. A manufacturer-fitted DPF that is missing or has been tampered with is a major MOT defect. Physical DPF removal and ECU deletion are only considered for genuine non-road, competition or motorsport applications and are not supplied for vehicles used on public roads. The vehicle owner is responsible for confirming its intended use and compliance. See the current GOV.UK MOT guidance .
Get the Right Advice First
What to Send Us
The quickest way to receive useful advice is to send us your registration number, exact warning message, fault codes and recent repair history. This allows us to understand the fault picture before recommending diagnosis, cleaning, repair or another appropriate route.
01
Required
Your Registration
Send the full registration number so we can identify the correct vehicle, engine, production year and ECU platform.
02
Important
Dashboard Message
Tell us the exact warning message, remaining mileage or number of starts. A clear photograph of the dashboard is helpful.
03
If Available
Fault Codes & Photos
Include diagnostic fault codes, scan reports, screenshots or photographs of any relevant components or warning messages.
04
Useful
Previous Work
Tell us about parts already replaced, recent repairs, unsuccessful regenerations, previous cleaning or other diagnostic work.
Example message
“Hi Alex, my registration is AB12 CDE. The dashboard shows [exact warning message]. The symptoms are [details] and the stored fault codes are [codes]. The vehicle has already had [previous repairs or replaced parts]. Can you advise on the best route?”
Send Your Details to RPM Sussex
WhatsApp is normally the easiest option when sending registration details, dashboard photographs, fault codes and diagnostic reports.
Please avoid sending sensitive personal information. Your registration number, fault details and relevant vehicle photographs are normally sufficient for an initial assessment.
Get a Quote or Check Compatibility
Choose Your Service
Select the solution you’re looking for, whether that’s AdBlue, EGR, DPF, or another ECU-related issue.
Tell Us About the Vehicle & Problem
Enter your registration number, contact details, and a few details about the issue. If the vehicle has warning lights, fault codes, a countdown, or previous work carried out, include that in the message so we can advise more accurately.
We’ll Review the Best Route
Once we’ve reviewed your enquiry, we’ll come back to you with the most suitable route for your vehicle, along with pricing or the next steps