Mobile Diagnostics Specialist

Advanced
Diagnostic
Specialists

Professional OBD diagnostics, fault code reading & vehicle health checks carried out at your home, workplace or roadside. No need to visit a garage.

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500+ Vehicles Diagnosed
95% First Time Fix
2hr Average Diagnostic Time
Engine Diagnostics
Fault Code Reading
DPF Diagnostics
ABS / Airbag Checks
ECU Inspection
Emissions Testing
Pre-Purchase Checks
Battery & Charging
Engine Diagnostics
Fault Code Reading
DPF Diagnostics
ABS / Airbag Checks
ECU Inspection
Emissions Testing
Pre-Purchase Checks
Battery & Charging
What We Do

Diagnostic Services

Comprehensive vehicle diagnostics using professional-grade equipment. All makes and models covered.

01

Advanced Diagnostics

Complete Scan of Full Vehicles of All Modules, Inspection of Fault Codes Discussed. (This includes looking at Live Data, Testing Electrical Connections and Labour for upto 1 hour)

02

Fault Code Reading (Basic Diagnostic)

Professional OBD-II/OBD-I fault code retrieval and interpretation. We explain what each code means in plain English.

03

DPF Diagnostics

Diesel Particulate Filter health checks, pressure testing and regeneration cycles to restore performance.

04

ECU Inspection

Scan for hidden fault codes and check ECU history data.

05

Battery & Charging System

Load-tested battery health checks, alternator output testing, and parasitic draw diagnosis.

06

Software Updates / Coding

Carry software updates / coding to rectify and fix software issues.

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Simple Process

How It Works

01

Book Online

Fill in our quick booking form with your vehicle details, location and preferred time slot.

02

We Come to You

Our technician arrives at your home, workplace or any convenient location with professional equipment.

03

Full Diagnostic

We connect to your vehicle's OBD port and run a complete scan of all available systems.

04

Detailed Report

You receive a clear written report explaining exactly what was found and our recommended next steps.

Diagnose.Codes Technician
About Us

Professional Diagnostics,
On Your Terms

We're a specialist mobile vehicle diagnostics service, bringing professional-grade diagnostic equipment directly to you. No waiting rooms, no unnecessary repairs — just honest, accurate diagnosis.

Our technicians use the same professional tools found in main dealer workshops, giving you dealership-quality diagnostics without the dealership price tag.

Professional Grade Equipment
All Makes & Models Covered
Fully Qualified Technicians
Transparent, Honest Reporting
Same-Day Appointments Available
Learn More About Us
Service Area

Areas We Cover

We provide mobile vehicle diagnostics across the local area. If you're unsure whether we cover your location, give us a call.

Billingham
Stockton-On-Tees
Middlesbrough
Thornaby
Redcar & Cleveland
Durham
Check Your Area

Coverage Area

Customer Reviews

What Our Customers Say

★★★★★

Absolutely brilliant service. Technician arrived on time, found the fault within 20 minutes and explained everything clearly. Saved me a fortune compared to taking it to the dealer.

JA
James M.
BMW 3 Series
★★★★★

Used Diagnose.Codes for a pre-purchase check on a used Golf. They found an issue the seller hadn't mentioned. Saved me from buying a money pit. Highly recommended!

SA
Sarah R.
VW Golf
★★★★★

Fantastic that they come to you — I couldn't take the car to a garage with a warning light on. They diagnosed an EGR fault on site and gave me a clear written report to take to my mechanic.

DA
Dave T.
Ford Transit
Latest News

From The Blog

All Posts
Diagnostics
26 May 2026

A simple missing fuse… causing multiple fault codes and unnecessary concern 🔍⚡

...
Diagnostics
26 May 2026

Nissan X-Trail 2.0 dCi (2017) – DPF Fault That Wasn’t Actually a DPF Fault

...
Diagnostics
26 May 2026

🚐 CRANK NO START – INTERMITTENT FAULT DIAGNOSIS 🚐

...
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Book a Diagnostic

Fill in the form and we'll confirm your appointment. Same-day bookings available subject to availability.

Warning Light On?
Don't Ignore It.

Book a professional mobile diagnostic today and know exactly what your vehicle is telling you.

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