ECU Electronic Diagnostics & Fault Finding

Professional Vehicle Diagnostics

Have a fault with your car? We can help! Our state-of-the-art diagnostic equipment is able to scan and interrogate all the electronic control modules in your vehicle to identify faults and issues. Whether you have a warning light on your dashboard, suspect a mechanical fault, or simply want a full health check of your vehicle's systems, our diagnostic services can provide the answers you need.

We can provide dealer level diagnostic checks for nearly all makes and models. Electronic diagnostic starts from only £75 + VAT. We cover all major controllers including Engine ECU, ABS, Gearbox TCU, Airbags, Convenience systems, electronic parking brakes, multimedia interfaces and more.

What Our Diagnostic Service Covers

• Engine ECU: Fault codes, sensor readings, fuel system issues, timing problems, emissions faults
• Gearbox TCU: Transmission faults, shift quality issues, clutch problems, mechatronic faults
• ABS & ESP Systems: Brake system faults, wheel speed sensor issues, stability control problems
• Airbag Systems: SRS faults, sensor issues, crash data retrieval
• Convenience Systems: Central locking, climate control, lighting systems, instrument cluster
• Electronic Parking Brakes: EPB faults, calibration, maintenance mode activation
• Multimedia & Navigation: Infotainment system faults, software updates, coding

Our Diagnostic Process

When you bring your vehicle to us for diagnostics, we don't just read and clear fault codes. We perform a comprehensive investigation to identify the root cause of any issues:

• Full system scan across all control modules
• Reading and interpreting fault codes
• Live data monitoring to observe real-time sensor readings
• Component activation testing where applicable
• Clear explanation of faults found and recommended actions
• Fault code clearing after repairs (where appropriate)

Common Warning Lights We Diagnose

• Engine Management Light / Check Engine Light
• DPF (Diesel Particulate Filter) Warning Light
• ABS / ESP / Traction Control Warnings
• Airbag / SRS Warning Light
• Gearbox / Transmission Fault Warnings
• AdBlue / Emissions System Warnings
• Oil Pressure / Engine Temperature Warnings

Why Choose JR Tuning for Diagnostics?

Unlike generic code readers that only provide basic fault codes, our dealer-level diagnostic equipment gives us deep access to your vehicle's systems. We use the same professional tools that main dealers use, but at a fraction of the cost. Our technicians have extensive experience with all makes and models, and we take the time to properly investigate faults rather than simply clearing codes and hoping for the best.

We can also combine diagnostic services with our other offerings. For example, if you're considering a remap but have existing faults, we'll diagnose and resolve these first to ensure your vehicle is in optimal condition before any performance tuning is carried out.