Live Data Engine Diagnostics Experts in the UK
Backed by multiple industry awards and recognised as a Which? Trusted Trader, our Vehicle diagnostic process is trusted across the UK.
At F5ECC, we provide an in-depth Live Data Diagnostic Consultation to identify the real cause of engine, emissions and DPF problems. Our data-led approach goes far beyond basic code readers, helping drivers avoid guesswork, unnecessary part replacements and repeated warning lights.
The devil is in the detail – a code read just isn’t enough. Live data diagnostics is essential for proper diagnosis where codes may not be found on a cheap reader or codes not logged, e.g. thermostat or failing sensor.
Reviews for our Live Engine Diagnostic Services
Caroline Muscroft
5 days ago
Weve gone away to scarbrough on holiday and my dpf was blocked and not running properly. Messaged and came out to us the next day! Brilliant service thankyou so much! Will be booking in for the carbon clean next
Craig Harmieson
1 week ago
Amazing service, didnt expect too much but totally blew mind, performance was increased, not much but I'd recently had a new turbo, so didnt expect much, as for mpg, I was expecting afew mpg here or there, but in truth it blew my mind, I have a 2005 mondeo st estate with 162k on the clock, and it went from 45.4 mpg on motorways to 68.8, posted video as proof, should highly recommend
Emma Valentine
2 weeks ago
Couldn’t ask for better service. Had a carbon clean done this week on my partner’s Astra. Adrian responded very quickly to my initial query and got us booked in for the next day. He was very thorough and explained everything that I wasn’t sure of (my knowledge on cars is awful). He provided the fault codes and the live engine data and gave great advice about how to fix the current issue we were having with our car. The car runs very smoothly and is finally lovely to drive again, wish we’d done this sooner. He was very friendly & polite which put any worries I had at rest. I wouldn’t go anywhere else. Thank you so much!
Seagrave Media
2 weeks ago
"I recently had F5 Engine Carbon Clean work on my three vehicles—a 2012 BMW X1, 2007 Jaguar XJ, and 2005 Audi TT—and the results are superb.
What really sets them apart is the comprehensive diagnostic work they carry out as part of the service. On two of my cars, the diagnostics highlighted a couple of underlying issues that I was completely unaware of. Because these were caught early, I was able to get them resolved alongside the carbon clean, which has made a massive difference to the overall performance.
All three cars now idle more quietly, feel sharper, and pull much more smoothly. It’s rare to find a service that combines deep technical knowledge with such tangible results. Professional, thorough, and highly recommended!"
What really sets them apart is the comprehensive diagnostic work they carry out as part of the service. On two of my cars, the diagnostics highlighted a couple of underlying issues that I was completely unaware of. Because these were caught early, I was able to get them resolved alongside the carbon clean, which has made a massive difference to the overall performance.
All three cars now idle more quietly, feel sharper, and pull much more smoothly. It’s rare to find a service that combines deep technical knowledge with such tangible results. Professional, thorough, and highly recommended!"
Andrew Bailey
3 weeks ago
Highly recommend!!
Excellent service, Adrian turned up on time, had the carbon clean and my car was diagnosed with a DPF issue so had a follow up appointment by Leon to sort out the issue and as I said before the car is much improved MPG seems back to normal and the car is running great.
Many thanks ????????
Excellent service, Adrian turned up on time, had the carbon clean and my car was diagnosed with a DPF issue so had a follow up appointment by Leon to sort out the issue and as I said before the car is much improved MPG seems back to normal and the car is running great.
Many thanks ????????
Charlie Stokes
3 weeks ago
Steve came out to give our DPF a full clean on our bmw 2 series the before and after results are incredible. More power better MPG and overall the car feels way better to drive. He showed us the before and after statistics. We are definitely getting him back to do a carbon clean
Amy Fryer-skelham
3 weeks ago
Our 3rd car being done by Adrian and always impresses us with the results . Very happy and will be lining number 4 up very soon
Ben Castle
4 weeks ago
Highly recommend this company.
Van was very sluggish and noisy so thought I would try a carbon clean and diagnostics.
Adrian was very quick to respond to my enquiry and managed to fit me in the same week. Adrian was incredibly knowledgeable and ran through the diagnostics with me and answered any questions I had. Carbon clean was quick and effective.
After the carbon clean the van drove a lot better and pulled through all gears very smoothly.
Well worth doing.
Van was very sluggish and noisy so thought I would try a carbon clean and diagnostics.
Adrian was very quick to respond to my enquiry and managed to fit me in the same week. Adrian was incredibly knowledgeable and ran through the diagnostics with me and answered any questions I had. Carbon clean was quick and effective.
After the carbon clean the van drove a lot better and pulled through all gears very smoothly.
Well worth doing.
Adam Brown
4 weeks ago
I rang Adrian after using him in the past and he got me booked in really quick, came out with constant updates on arrival time so didn’t have to sit around waiting. Did all the checks on the car then explained everything as it was being done, didn’t mind answering any questions asked. Mentioned a slight vibration and after it was all done the vibration was almost non existent sounded loads better and was driving in my opinion better. Really good job was very pleased and top man Thanks
Tim Ward
1 month ago
All round a very impressive service.There is a noticeable improvement in my 100k mile diesel, it runs more smoothly and hopefully will have a better mpg.
Adrian also took time to examine a number of engine fault codes, listing them for me for further investigations.
Thank you!
Adrian also took time to examine a number of engine fault codes, listing them for me for further investigations.
Thank you!
Lewis Jones
1 month ago
Cant be happier with the service on my 115k mile 2013 Hyundai i30 1.6CRDi (Diesel). Quick responses on email/whattsapp. Open communication on how their van/machine needs to be setup and how to prepare your car. The clean was quick and Adrian was highly informative in the diagnostics with whats normal and whats irregular (luckily nothing major was found). Also told me about how the cleaning process works which was interesting. After the clean (~50mins) the car has an increase in performance, throttle response, a smoother operating engine with less vibration and improvements in the mpg (~10mpg) which were all previous problems I had encountered. Could not recommend them enough as it now feels like brand new and will certainly be using them again when the time comes around (~25k miles later as suggested) or if I were to change car.
eddie affection
1 month ago
Very polite very knowledgeable communication excellent carbon cleaned two of my vehicles with excellent results picked up a fault with one (hole in intercooler ) which I never would have found I put problem right and all is now good fantastic serviceView more
Live Data Engine Diagnostics
Our Live Data Diagnostic Service can be booked as a standalone service, but is also included in our Engine Carbon Clean and DPF Clean services.
What Our Live Data Diagnostic Consultation Includes:
Price from £69
- Failed MOT emissions
- High soot levels and regen problems
- Poor fuel economy
- Sluggish or uneven performance
- Engine vibration
- Turbo flutter or lack of boost
- Glow plug issues
- Sensor failures not triggered by codes
- Early DPF restriction
- Over-fuelling and smoke
- Repeated DPF or engine lights
Reviews For our DPF Cleaning Services
Caroline Muscroft
5 days ago
Weve gone away to scarbrough on holiday and my dpf was blocked and not running properly. Messaged and came out to us the next day! Brilliant service thankyou so much! Will be booking in for the carbon clean next
Craig Harmieson
1 week ago
Amazing service, didnt expect too much but totally blew mind, performance was increased, not much but I'd recently had a new turbo, so didnt expect much, as for mpg, I was expecting afew mpg here or there, but in truth it blew my mind, I have a 2005 mondeo st estate with 162k on the clock, and it went from 45.4 mpg on motorways to 68.8, posted video as proof, should highly recommend
Emma Valentine
2 weeks ago
Couldn’t ask for better service. Had a carbon clean done this week on my partner’s Astra. Adrian responded very quickly to my initial query and got us booked in for the next day. He was very thorough and explained everything that I wasn’t sure of (my knowledge on cars is awful). He provided the fault codes and the live engine data and gave great advice about how to fix the current issue we were having with our car. The car runs very smoothly and is finally lovely to drive again, wish we’d done this sooner. He was very friendly & polite which put any worries I had at rest. I wouldn’t go anywhere else. Thank you so much!
Seagrave Media
2 weeks ago
"I recently had F5 Engine Carbon Clean work on my three vehicles—a 2012 BMW X1, 2007 Jaguar XJ, and 2005 Audi TT—and the results are superb.
What really sets them apart is the comprehensive diagnostic work they carry out as part of the service. On two of my cars, the diagnostics highlighted a couple of underlying issues that I was completely unaware of. Because these were caught early, I was able to get them resolved alongside the carbon clean, which has made a massive difference to the overall performance.
All three cars now idle more quietly, feel sharper, and pull much more smoothly. It’s rare to find a service that combines deep technical knowledge with such tangible results. Professional, thorough, and highly recommended!"
What really sets them apart is the comprehensive diagnostic work they carry out as part of the service. On two of my cars, the diagnostics highlighted a couple of underlying issues that I was completely unaware of. Because these were caught early, I was able to get them resolved alongside the carbon clean, which has made a massive difference to the overall performance.
All three cars now idle more quietly, feel sharper, and pull much more smoothly. It’s rare to find a service that combines deep technical knowledge with such tangible results. Professional, thorough, and highly recommended!"
Andrew Bailey
3 weeks ago
Highly recommend!!
Excellent service, Adrian turned up on time, had the carbon clean and my car was diagnosed with a DPF issue so had a follow up appointment by Leon to sort out the issue and as I said before the car is much improved MPG seems back to normal and the car is running great.
Many thanks ????????
Excellent service, Adrian turned up on time, had the carbon clean and my car was diagnosed with a DPF issue so had a follow up appointment by Leon to sort out the issue and as I said before the car is much improved MPG seems back to normal and the car is running great.
Many thanks ????????
Charlie Stokes
3 weeks ago
Steve came out to give our DPF a full clean on our bmw 2 series the before and after results are incredible. More power better MPG and overall the car feels way better to drive. He showed us the before and after statistics. We are definitely getting him back to do a carbon clean
Amy Fryer-skelham
3 weeks ago
Our 3rd car being done by Adrian and always impresses us with the results . Very happy and will be lining number 4 up very soon
Ben Castle
4 weeks ago
Highly recommend this company.
Van was very sluggish and noisy so thought I would try a carbon clean and diagnostics.
Adrian was very quick to respond to my enquiry and managed to fit me in the same week. Adrian was incredibly knowledgeable and ran through the diagnostics with me and answered any questions I had. Carbon clean was quick and effective.
After the carbon clean the van drove a lot better and pulled through all gears very smoothly.
Well worth doing.
Van was very sluggish and noisy so thought I would try a carbon clean and diagnostics.
Adrian was very quick to respond to my enquiry and managed to fit me in the same week. Adrian was incredibly knowledgeable and ran through the diagnostics with me and answered any questions I had. Carbon clean was quick and effective.
After the carbon clean the van drove a lot better and pulled through all gears very smoothly.
Well worth doing.
Adam Brown
4 weeks ago
I rang Adrian after using him in the past and he got me booked in really quick, came out with constant updates on arrival time so didn’t have to sit around waiting. Did all the checks on the car then explained everything as it was being done, didn’t mind answering any questions asked. Mentioned a slight vibration and after it was all done the vibration was almost non existent sounded loads better and was driving in my opinion better. Really good job was very pleased and top man Thanks
Tim Ward
1 month ago
All round a very impressive service.There is a noticeable improvement in my 100k mile diesel, it runs more smoothly and hopefully will have a better mpg.
Adrian also took time to examine a number of engine fault codes, listing them for me for further investigations.
Thank you!
Adrian also took time to examine a number of engine fault codes, listing them for me for further investigations.
Thank you!
Lewis Jones
1 month ago
Cant be happier with the service on my 115k mile 2013 Hyundai i30 1.6CRDi (Diesel). Quick responses on email/whattsapp. Open communication on how their van/machine needs to be setup and how to prepare your car. The clean was quick and Adrian was highly informative in the diagnostics with whats normal and whats irregular (luckily nothing major was found). Also told me about how the cleaning process works which was interesting. After the clean (~50mins) the car has an increase in performance, throttle response, a smoother operating engine with less vibration and improvements in the mpg (~10mpg) which were all previous problems I had encountered. Could not recommend them enough as it now feels like brand new and will certainly be using them again when the time comes around (~25k miles later as suggested) or if I were to change car.
eddie affection
1 month ago
Very polite very knowledgeable communication excellent carbon cleaned two of my vehicles with excellent results picked up a fault with one (hole in intercooler ) which I never would have found I put problem right and all is now good fantastic serviceView more
- Forcing more soot into the DPF
- Boosting a turbo with a hidden fault
- Replacing sensors that aren’t actually failing
- Ignoring early-stage issues that later damage expensive components
Suitable for all petrol, diesel, LPG, hybrid and other hydrocarbon-based engines equipped with an OBD II compliant diagnostics port.
Live Data Monitoring of All Available Engine Values
This is where real diagnosis happens. We monitor:
- EGR valve position and gas flow
- DPF soot and ash levels
- Differential pressure readings
- Injector balance and fuelling
- Fuel rail pressure
- Thermostat performance
- Coolant and exhaust gas temperatures
- Turbo behaviour and airflow
- Sensor feedback across the system
Many vehicles show no warning lights at all but still have underlying issues that only appear in the data.
- Forcing more soot into the DPF
- Boosting a turbo with a hidden fault
- Replacing sensors that aren’t actually failing
What Our Live Data Diagnostic Consultation Includes
Code Check and Full Report
Code Check anWe start with a full code scan (as most garages do), but we do it together with you.
We save the findings as a PDF where possible and send it to you for reference.
Clearing Engine Faults and Monitoring Return Patterns
After clearing the codes, we watch how the vehicle behaves and note when each fault reappears.
This reveals patterns that cheap readers and quick scans cannot pick up, such as:
- Intermittent sensor failures
- Inconsistent EGR movement
- Failing thermostats
- Pressure fluctuations during driving
- Early-stage DPF restriction
Knowing the pattern often points straight to the root cause.
- EGR valve position and gas flow
- DPF soot and ash levels
- Differential pressure readings
- Injector balance and fuelling
- Fuel rail pressure
- Thermostat performance
- Coolant and exhaust gas temperatures
- Turbo behaviour and airflow
- Sensor feedback across the system
Many vehicles show no warning lights at all but still have underlying issues that only appear in the data.
Reviews For our Carbon Cleaning, DPF & Engine Diagnostics Services
Caroline Muscroft
5 days ago
Weve gone away to scarbrough on holiday and my dpf was blocked and not running properly. Messaged and came out to us the next day! Brilliant service thankyou so much! Will be booking in for the carbon clean next
Craig Harmieson
1 week ago
Amazing service, didnt expect too much but totally blew mind, performance was increased, not much but I'd recently had a new turbo, so didnt expect much, as for mpg, I was expecting afew mpg here or there, but in truth it blew my mind, I have a 2005 mondeo st estate with 162k on the clock, and it went from 45.4 mpg on motorways to 68.8, posted video as proof, should highly recommend
Emma Valentine
2 weeks ago
Couldn’t ask for better service. Had a carbon clean done this week on my partner’s Astra. Adrian responded very quickly to my initial query and got us booked in for the next day. He was very thorough and explained everything that I wasn’t sure of (my knowledge on cars is awful). He provided the fault codes and the live engine data and gave great advice about how to fix the current issue we were having with our car. The car runs very smoothly and is finally lovely to drive again, wish we’d done this sooner. He was very friendly & polite which put any worries I had at rest. I wouldn’t go anywhere else. Thank you so much!
Seagrave Media
2 weeks ago
"I recently had F5 Engine Carbon Clean work on my three vehicles—a 2012 BMW X1, 2007 Jaguar XJ, and 2005 Audi TT—and the results are superb.
What really sets them apart is the comprehensive diagnostic work they carry out as part of the service. On two of my cars, the diagnostics highlighted a couple of underlying issues that I was completely unaware of. Because these were caught early, I was able to get them resolved alongside the carbon clean, which has made a massive difference to the overall performance.
All three cars now idle more quietly, feel sharper, and pull much more smoothly. It’s rare to find a service that combines deep technical knowledge with such tangible results. Professional, thorough, and highly recommended!"
What really sets them apart is the comprehensive diagnostic work they carry out as part of the service. On two of my cars, the diagnostics highlighted a couple of underlying issues that I was completely unaware of. Because these were caught early, I was able to get them resolved alongside the carbon clean, which has made a massive difference to the overall performance.
All three cars now idle more quietly, feel sharper, and pull much more smoothly. It’s rare to find a service that combines deep technical knowledge with such tangible results. Professional, thorough, and highly recommended!"
Andrew Bailey
3 weeks ago
Highly recommend!!
Excellent service, Adrian turned up on time, had the carbon clean and my car was diagnosed with a DPF issue so had a follow up appointment by Leon to sort out the issue and as I said before the car is much improved MPG seems back to normal and the car is running great.
Many thanks ????????
Excellent service, Adrian turned up on time, had the carbon clean and my car was diagnosed with a DPF issue so had a follow up appointment by Leon to sort out the issue and as I said before the car is much improved MPG seems back to normal and the car is running great.
Many thanks ????????
Charlie Stokes
3 weeks ago
Steve came out to give our DPF a full clean on our bmw 2 series the before and after results are incredible. More power better MPG and overall the car feels way better to drive. He showed us the before and after statistics. We are definitely getting him back to do a carbon clean
Amy Fryer-skelham
3 weeks ago
Our 3rd car being done by Adrian and always impresses us with the results . Very happy and will be lining number 4 up very soon
Ben Castle
4 weeks ago
Highly recommend this company.
Van was very sluggish and noisy so thought I would try a carbon clean and diagnostics.
Adrian was very quick to respond to my enquiry and managed to fit me in the same week. Adrian was incredibly knowledgeable and ran through the diagnostics with me and answered any questions I had. Carbon clean was quick and effective.
After the carbon clean the van drove a lot better and pulled through all gears very smoothly.
Well worth doing.
Van was very sluggish and noisy so thought I would try a carbon clean and diagnostics.
Adrian was very quick to respond to my enquiry and managed to fit me in the same week. Adrian was incredibly knowledgeable and ran through the diagnostics with me and answered any questions I had. Carbon clean was quick and effective.
After the carbon clean the van drove a lot better and pulled through all gears very smoothly.
Well worth doing.
Adam Brown
4 weeks ago
I rang Adrian after using him in the past and he got me booked in really quick, came out with constant updates on arrival time so didn’t have to sit around waiting. Did all the checks on the car then explained everything as it was being done, didn’t mind answering any questions asked. Mentioned a slight vibration and after it was all done the vibration was almost non existent sounded loads better and was driving in my opinion better. Really good job was very pleased and top man Thanks
Tim Ward
1 month ago
All round a very impressive service.There is a noticeable improvement in my 100k mile diesel, it runs more smoothly and hopefully will have a better mpg.
Adrian also took time to examine a number of engine fault codes, listing them for me for further investigations.
Thank you!
Adrian also took time to examine a number of engine fault codes, listing them for me for further investigations.
Thank you!
Lewis Jones
1 month ago
Cant be happier with the service on my 115k mile 2013 Hyundai i30 1.6CRDi (Diesel). Quick responses on email/whattsapp. Open communication on how their van/machine needs to be setup and how to prepare your car. The clean was quick and Adrian was highly informative in the diagnostics with whats normal and whats irregular (luckily nothing major was found). Also told me about how the cleaning process works which was interesting. After the clean (~50mins) the car has an increase in performance, throttle response, a smoother operating engine with less vibration and improvements in the mpg (~10mpg) which were all previous problems I had encountered. Could not recommend them enough as it now feels like brand new and will certainly be using them again when the time comes around (~25k miles later as suggested) or if I were to change car.
eddie affection
1 month ago
Very polite very knowledgeable communication excellent carbon cleaned two of my vehicles with excellent results picked up a fault with one (hole in intercooler ) which I never would have found I put problem right and all is now good fantastic serviceView more
Mobile Engine Diagnostics FAQs
Got a question about our Live Diagnostic Service? Here are the answers to the most common queries from drivers experiencing engine, emissions, performance or DPF issues. This guide explains what our diagnostic process covers and what you can expect before your appointment.
What does a live data diagnostic actually do?
A live data diagnostic looks at how your engine is performing in real time. We check fuelling, sensor behaviour, temperatures, pressure readings, EGR movement, DPF data, injector balance, turbo activity and much more. This reveals issues that simple code readers cannot detect.
How is this different from a basic code scan?
A normal code scan only shows stored fault codes. Many problems never log a code until they become severe. Live data shows how the engine behaves second-by-second, helping us identify early faults, failing sensors, incorrect temperatures, poor airflow and fuel delivery issues.
Can you diagnose Engine problems even if no warning lights are on?
Yes. Many vehicles run poorly long before the dashboard triggers a warning. Live data often reveals early thermostat failures, EGR restrictions, injector issues or DPF problems even when no fault code is present.
How long does an engine diagnostic service take?
The session usually takes around one hour. This includes reading codes, clearing them, monitoring return patterns, checking all live data points and documenting findings. If the vehicle has multiple issues, it may take slightly longer.
What symptoms suggest I need an Engine diagnostic check?
Common signs include:
Poor fuel economy
Sluggish or uneven performance
Excess smoke
Engine vibration
DPF or engine warning lights
Repeated regenerations
High idle or rough running
Failed MOT emissions
Turbo flutter or slow spool
Oil dilution or diesel smell
Anything that “feels off” can be checked with live data.
Can you identify faulty sensors?
Yes. We can see whether sensors are slow, inconsistent, stuck, under-reading or over-reading. This includes temperature sensors, pressure sensors, MAF/MAP sensors, O2 sensors and DPF sensors. We can also spot early failures before they become serious.
Do you investigate DPF issues as part of the diagnostic?
Yes. DPF soot load, ash levels, pressure readings and regen status are all included. We can see whether the DPF is restricted, whether regeneration is being attempted and what is stopping it.
Will you know if my EGR valve is failing?
Yes. Live data shows EGR movement, command position, flow readings and whether the valve is sticking, slow or not responding. We can often spot EGR faults that do not trigger a code.
Do you check injectors and fuelling?
Yes. Injector balance, fuelling corrections and rail pressure can all be monitored. This helps diagnose misfires, smoking issues, rough idle and poor MPG.
Is the diagnostic safe for my vehicle?
Yes. It is a passive, non-invasive process that uses the vehicle’s own sensors. No chemicals, forced regenerations or risky procedures are used during diagnostics.
Do you offer mobile engine diagnostics?
Yes. We provide a full mobile engine diagnostic service across the East and West Midlands, Cambridgeshire, East Anglia and parts of Yorkshire. All diagnostics are performed at your home or workplace.
Is live data diagnostics included with a Carbon Clean or DPF Clean?
Yes. A full diagnostic is included with every Engine Carbon Clean and every DPF Clean appointment (where applicable). You can also book it as a standalone service.