ECU Electronic Diagnostics & Fault Finding

Vehicle diagnostics using professional diagnostic equipment. Warning light on? We'll find the cause, not just clear the code.

All makes & models Full system scan Dealer-level equipment
ECU Diagnostic & Fault Finding

Have a fault with your car? Our state-of-the-art diagnostic equipment scans and interrogates 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 service provides the answers you need.

Engine ECUFault codes, sensor data, fuel system, timing and emissions faults.
Gearbox TCUTransmission faults, shift quality, clutch and mechatronic issues.
ABS & BrakesBrake system faults, wheel speed sensors and stability control.
Airbag & SRSAirbag faults, sensor issues and crash data retrieval.
Full System ScanEvery control module checked, not just the one showing a light.
Live DataReal-time sensor monitoring to catch intermittent faults.

Our Diagnostic Process

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

  1. 1
    Full System Scan: Every control module is interrogated, not just the one triggering a warning light.
  2. 2
    Fault Code Interpretation: We analyse codes in context rather than simply reading a description.
  3. 3
    Live Data Monitoring: Real-time sensor readings to observe faults as they occur, catching intermittent issues that clear themselves.
  4. 4
    Component Testing: Activation and function testing of components where applicable.
  5. 5
    Clear Explanation: We explain exactly what we found and what we recommend, with no jargon.

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 equipment gives us deep access to your vehicle's systems. We use the same professional tools that main dealers use, at a fraction of the cost. Our technicians have extensive experience across all makes and models, and we take the time to properly investigate faults rather than simply clearing codes.

We can also combine diagnostics with our other services. 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 tuning is carried out.

Book your diagnostic check

Call 01622 320217 or email info@jrtuning.co.uk

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