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.
✅ IMI Certified
✅ DBS Checked
Reviews For our Live Data Engine Diagnostic Services
Very knowledgeable on issues with electrical problems with my car.
Arrived on time and completed the work as you would expect from a good reliable company.
He set up within 5 minutes and went on to the diagnostics and talked me through what was coming up after a reset all was clear. It took about 1 hour in total great job well happy would definitely recommend Adrian well mannered gentleman.
Leon has great knowledge! Would recommend!
Will use in future!
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!"
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 ????????
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
- 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 vehicles equipped with an OBD II compliant 12v diagnostics port.
- 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 Live Data Engine Diagnostic Services
Very knowledgeable on issues with electrical problems with my car.
Arrived on time and completed the work as you would expect from a good reliable company.
He set up within 5 minutes and went on to the diagnostics and talked me through what was coming up after a reset all was clear. It took about 1 hour in total great job well happy would definitely recommend Adrian well mannered gentleman.
Leon has great knowledge! Would recommend!
Will use in future!
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!"
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 ????????
What Our Live Data Diagnostic Consultation Includes
Code Check and Full Report
We 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. Knowing the pattern often points to the root cause.
Live Data Monitoring of All Available Engine Values
Where the real diagnosis happens
- 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 Live Data Engine Diagnostic Services
Very knowledgeable on issues with electrical problems with my car.
Arrived on time and completed the work as you would expect from a good reliable company.
He set up within 5 minutes and went on to the diagnostics and talked me through what was coming up after a reset all was clear. It took about 1 hour in total great job well happy would definitely recommend Adrian well mannered gentleman.
Leon has great knowledge! Would recommend!
Will use in future!
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!"
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 ????????
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.