Expert Live Data Engine Diagnostics Specialists 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.
Reviews for our Live Diagnostic Services
Really informative, walked you through the diagnostic and fault finding. Explained his reasoning.
I would definitely recommend and I will be using him again without a doubt.
Thank you Leon.
Simon Page.
Highly recommend Adrian to anyone thinking about getting their car carbon cleaned — top guy and excellent service!
I was booked in quickly and had clear instructions ahead of Adrian’s arrival. He kept me up to date with his ETA on the day.
Adrian showed and explained everything that he was doing, and how the process works. He explained all of the engine codes and diagnostic figures.
Would recommend and will use again in the future
Live Data 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
Really informative, walked you through the diagnostic and fault finding. Explained his reasoning.
I would definitely recommend and I will be using him again without a doubt.
Thank you Leon.
Simon Page.
Highly recommend Adrian to anyone thinking about getting their car carbon cleaned — top guy and excellent service!
I was booked in quickly and had clear instructions ahead of Adrian’s arrival. He kept me up to date with his ETA on the day.
Adrian showed and explained everything that he was doing, and how the process works. He explained all of the engine codes and diagnostic figures.
Would recommend and will use again in the future
- 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 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
Really informative, walked you through the diagnostic and fault finding. Explained his reasoning.
I would definitely recommend and I will be using him again without a doubt.
Thank you Leon.
Simon Page.
Highly recommend Adrian to anyone thinking about getting their car carbon cleaned — top guy and excellent service!
I was booked in quickly and had clear instructions ahead of Adrian’s arrival. He kept me up to date with his ETA on the day.
Adrian showed and explained everything that he was doing, and how the process works. He explained all of the engine codes and diagnostic figures.
Would recommend and will use again in the future
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 a 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.