Advanced Vehicle Diagnostics & Fault Testing | 22 MOTORS™

Accurate diagnostics is essential for resolving warning lights, power loss, electrical issues and performance problems. At 22 MOTORS™, we use dealer-level diagnostic platforms, live data analysis and manufacturer-approved repair information to identify faults quickly and precisely.
All diagnostic work is carried out by IMI-certified and BSI-approved technicians, ensuring every test follows correct repair procedures and meets manufacturer standards.

We diagnose all makes and models, from daily vehicles to luxury and high-performance brands including Ferrari, Lamborghini, Aston Martin, Rolls-Royce, Bentley, Porsche, Mercedes-Benz, BMW, Audi, Vauxhall, Volkswagen, Land Rover, Volvo, Lexus, Toyota, Nissan and many more.

How We Diagnose Vehicle Faults

Our diagnostic process is designed to move beyond simple code reading. Modern vehicles rely on complex ECUs, sensors, modules and data networks — and our technicians use advanced tools to accurately pinpoint the real cause of the issue.

We begin with a full electronic scan of all control modules, retrieving fault codes, live data values, freeze-frame data and ECU communication records. This helps us understand exactly when the fault occurred and what systems were affected.

From there, we analyse real-time sensor behaviour, including fuel trim readings, boost pressure, air flow, temperature sensors, voltage outputs and exhaust gas values. Live data allows us to see how the vehicle behaves under load, idle and acceleration so that faults cannot hide behind stored codes.

If required, we carry out individual component tests such as injector pulse checks, ignition coil performance, sensor voltage sweeps, actuator tests and module communication checks. We also inspect wiring, grounds, connectors, vacuum lines and fuses to rule out physical or network issues.

Once the fault is confirmed, we provide a clear diagnosis and a repair plan with accurate costs and timelines — no guesswork, no unnecessary part replacement.

What We Commonly Diagnose

Our diagnostic systems allow us to resolve a wide range of issues including:

• Engine management faults and loss of power

• Warning lights such as engine, ABS, traction, airbag and DPF

• AdBlue and emissions system failures

• ECU and CAN-bus communication issues

• Turbocharger and boost pressure faults

• Electrical problems and battery drain

• Automatic gearbox and transmission warnings

• Hybrid and electric vehicle system faults

• Poor fuel economy or failed MOT emissions

• Intermittent faults that only appear under load

If there is a warning light, performance issue or electrical irregularity, our equipment will find it.

Why Drivers Trust 22 MOTORS™ for Diagnostics

Our workshop combines modern diagnostic technology with true technical expertise. Every technician is trained to interpret live data correctly, follow wiring diagrams, carry out component-level testing and confirm the root cause of the fault before any repair begins.

We use manufacturer service information for brands such as Mercedes, BMW, Audi, Volkswagen, Land Rover, Porsche, Volvo, Toyota, Lexus, Nissan and performance brands including Ferrari, Lamborghini, Bentley, Rolls-Royce and Aston Martin. This ensures accuracy, safety and long-term reliability.

Customers rely on us because we provide transparent communication, honest advice, fast appointments and accurate results. Our diagnostic reporting is clear, detailed and easy to understand, with repair options explained without technical jargon.

Book a Diagnostic Appointment

If your vehicle has a warning light, power loss, electrical fault, intermittent issue or any unexplained problem, our advanced diagnostic platforms and trained specialists will identify the cause quickly and accurately.

Call: 020 7101 4322
Email: [email protected]
Website: 22motors.co.uk

22 MOTORS™ — Precision diagnostics and fault-finding for every vehicle.