Engine management & ECU
Engine warning lights, poor running, misfires, crank-no-start faults, sensor plausibility, fuelling, boost and ECU communication checks.
Full-system testing. Evidence-led fault finding.
Mobile Car & Van Diagnostics Birmingham & West Midlands
Professional car and van diagnostics from £65 at our Stourbridge workshop, with mobile diagnostic appointments across Birmingham and the West Midlands. Engine ECU, gearbox, ABS, airbag, BSI, BCM, battery, charging, no-start and electrical fault testing.
✓ Professional equipment
✓ Vehicle-specific assessment
✓ Clear quotation
Specialist support
A correct solution starts with the correct diagnosis.
Modern vehicle faults can involve several linked control modules, sensors, power supplies and communication networks. We combine full-system scanning, live data and targeted electrical testing to identify the likely cause before recommending ECU programming, coding, component repair or replacement.
Every diagnostic appointment is matched to the vehicle and reported symptoms. We record fault codes, module communication and relevant live data, then use targeted checks to distinguish the likely cause from secondary or historic faults before recommending repairs.
Service capabilities
✓Engine, ECU, gearbox, ABS, ESP and airbag diagnostics
✓Battery, alternator, charging and electrical-system testing
✓Immobiliser, key recognition, BCM and BSI investigation
✓Mobile car and van diagnostics across Birmingham and the West Midlands
Workshop diagnostic price · Stourbridge, Dudley & Birmingham
Book workshop diagnostics
Vehicle diagnostics from £65
Workshop diagnostics are available for customers travelling from Stourbridge, Dudley, Birmingham and surrounding West Midlands areas. This starting price applies when the customer brings the vehicle to the SG-Tronic Motorsport workshop in Stourbridge. The final price depends on the vehicle, systems tested, fault complexity and diagnostic time. Mobile attendance, advanced electrical testing, programming and repairs are quoted separately.
Complete vehicle diagnostics
Advanced testing across every major system.
A diagnostic trouble code is a starting point—not automatic proof that a component has failed. We review module communication, live values, voltage supply and supporting evidence before advising the next repair or programming step.
ABS, ESP & traction control
Wheel-speed signals, ABS hydraulic-unit faults, steering-angle data, stability control and traction-control warning investigation.
Airbag & SRS diagnostics
Airbag warning lights, restraint-controller faults, seat and buckle circuits, crash-data context and module communication testing.
Gearbox, TCM & TCU
Manual and automatic gearbox fault assessment, transmission codes, live data, selector information, clutch adaptation and controller communication.
DPF & emissions systems
DPF soot and pressure information, regeneration history, temperature sensors and related engine conditions assessed before repair decisions.
Immobiliser & key systems
Key recognition, security status, crank-no-start symptoms and communication between the immobiliser, body module and engine ECU.
Body and security module diagnostics
BCM, BSI, GEM, SAM, UCH, FRM, CAS & KVM diagnostics.
Body and access modules control multiple electrical functions and communicate across CAN, LIN and manufacturer-specific networks. We test communication, power, grounds, fault memory, live data and related circuits before recommending coding, cloning or replacement.
BCM diagnostic service
Body Control Module testing for central locking, lighting, windows, wipers, alarm functions, network communication, water damage and replacement-module faults.
BCM services →BSI diagnostic service
Peugeot, Citroën and DS Body Systems Interface diagnosis for non-start, key recognition, electrical functions, configuration, power-management and communication faults.
BSI services →GEM diagnostic service
Ford Generic Electronic Module investigation for body-electrical operation, locking, lighting, wipers, retained faults, module communication and replacement coding requirements.
GEM coding →SAM diagnostic service
Mercedes-Benz Signal Acquisition Module checks for fuse and relay control, lighting, convenience functions, CAN communication, moisture damage and front or rear SAM faults.
SAM coding →UCH diagnostic service
Renault UCH body module diagnosis for immobiliser communication, locking, indicators, wipers, lighting, key recognition and vehicle-network problems.
UCH services →FRM diagnostic service
BMW and MINI Footwell Module testing for windows, mirrors, exterior lighting, indicators, short-circuit counters, lost communication and corrupted software.
FRM programming →CAS diagnostic service
BMW Car Access System checks for key recognition, terminal status, steering lock, start authorisation, immobiliser synchronisation and ECU communication.
CAS and immobiliser services →KVM diagnostic service
Jaguar and Land Rover Keyless Vehicle Module diagnosis for smart-key recognition, passive entry, start authorisation, security communication and replacement-module setup.
KVM and key services →
Electrical and charging-system analysis
Battery, alternator and vehicle-network checks.
Low voltage and unstable power supplies can create misleading fault codes across several modules. Our diagnostic process can include battery condition, charging voltage, alternator performance, voltage-drop checks and electrical-system analysis where appropriate.
Battery and charging tests
Battery state, cranking voltage and alternator charging behaviour assessed against the symptoms.
Dashboard warning lights
Engine, ABS, ESP, airbag, battery, gearbox, DPF and other warnings scanned and investigated.
Real-time fault detection
Live data, actuator tests and module status can help reproduce intermittent or condition-dependent faults.
Electronic health check
A multi-module scan provides a broader view of stored, current and communication-related faults.
Full electronic system health check
Scan, analyse, test and report.
Confirm the complaint
We record symptoms, warning lights, repair history and the conditions in which the fault occurs.
Run a full-system scan
Compatible control modules are checked for stored, pending, historic and communication fault codes.
Analyse live information
Relevant sensor values, module states and network data are compared with expected operation.
Targeted testing
Electrical or functional checks are performed where access, safety and the initial results require them.
Explain the next step
We outline the evidence found and recommend further investigation, repair, coding or programming as appropriate.
Commercial, leisure and two-wheel vehicle diagnostics
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Van, motorhome, pickup, HGV, LDV, scooter and motorcycle diagnostics.
Diagnostic support is available for a wider range of petrol, diesel and electronically controlled vehicles—not only passenger cars. Depending on the make, model and system, testing may include engine ECU fault codes, live data, charging voltage, CAN communication, immobiliser status, ABS, airbag, emissions and transmission control modules.
Workshop testing is recommended when the fault requires controlled power supplies, extended electrical investigation or module access. Selected mobile appointments are available across Birmingham, Stourbridge and the West Midlands where the vehicle location, working space and diagnostic access are suitable.
Van diagnostics
Engine management, DPF, AdBlue, EGR, ABS, airbag, immobiliser, charging and electrical fault investigation for supported light commercial vans.
Motorhome and campervan diagnostics
Base-vehicle ECU and module testing for supported Fiat Ducato, Ford Transit, Mercedes Sprinter, Peugeot Boxer, Citroën Relay, Renault Master and Iveco Daily platforms.
Pickup-truck diagnostics
Engine, 4x4, transmission, ABS, restraint, body-module and emissions-system diagnostics for supported diesel and petrol pickups.
HGV and truck diagnostics
Selected heavy commercial engine, SCR, AdBlue, DPF, NOx, gearbox and control-module fault assessment, subject to vehicle system and safe workshop or mobile access.
LDV and commercial-vehicle diagnostics
Fault-code scanning, live-data analysis and electronic-system checks for supported light-duty vehicles, fleet vehicles and specialist commercial applications.
Motorcycle diagnostics
Supported motorcycle ECU, fuel-injection, ignition, immobiliser, ABS, charging and sensor fault investigation using compatible diagnostic equipment.
Scooter diagnostics
Electronic fuel injection, ECU communication, key and immobiliser, charging-system and warning-light checks for supported modern scooters.
Compatibility check: send the registration or VIN, vehicle type, engine code, symptoms and dashboard warning-light photographs before booking. Coverage varies by manufacturer, diagnostic protocol and module version.
Mobile diagnostics Birmingham
Mobile car & van diagnostics across Birmingham and the West Midlands.
Mobile diagnostic appointments are available by arrangement across Birmingham and the West Midlands, including Harborne, Edgbaston, Stourbridge, Dudley, Halesowen, Wolverhampton, Walsall, Solihull, West Bromwich, Sutton Coldfield, Kidderminster, Bromsgrove and surrounding areas.
Mobile diagnosis is best suited to faults that can be tested safely at the vehicle. Complex electrical faults, extended circuit testing, module removal, controlled power-supply work or programming may be continued at our Stourbridge workshop after the initial assessment.
Birmingham mobile fault finding
Car & Van Fault Finding
Our mobile diagnostic service is aimed at finding evidence before parts are replaced. Where the vehicle and location allow, we can combine a full-system scan with live data, voltage checks and targeted electrical testing, then explain whether the next step is repair, coding, programming or workshop investigation.
Engine warning lights & poor running
Engine ECU fault memory, sensor plausibility, boost and fuelling data, misfire information, DPF and emissions context assessed against the reported symptoms.
No-start, key & immobiliser faults
Battery voltage, start authorisation, key status, ECU and body-module communication, power supplies and related security data checked before ECU or immobiliser work is recommended.
Electrical, charging & CAN network faults
Repeated flat batteries, unstable charging, multiple warning lights and lost-module communication can be investigated with voltage, ground and vehicle-network checks where appropriate.
When this service may help
Common symptoms and requirements
Warning lights or intermittent faults
We scan the relevant modules, review current and historic faults, compare live data and check the conditions in which the warning appears before recommending parts or programming.
Crank-no-start or poor running
Testing can include battery voltage, engine-speed signal, fuel and sensor data, ECU communication, immobiliser authorisation and power or ground checks to separate a control-system fault from a mechanical problem.
Multiple modules failing to communicate
We check battery and charging stability, CAN/LIN communication, module power supplies, grounds and network fault patterns before deciding whether coding, repair or replacement is appropriate.
Multi-brand capability
Cars, vans and specialist modules.
Diagnostic support is available for many petrol, diesel, hybrid cars, vans, pickups and light commercial vehicles, including Audi, Volkswagen, SEAT, Škoda, BMW, MINI, Mercedes-Benz, Ford, Vauxhall, Peugeot, Citroën, Renault, Fiat, Jaguar, Land Rover, Volvo, Toyota, Nissan, Hyundai and Kia. Exact test capability depends on model, year, diagnostic protocol and safe access to the vehicle.
Compatibility for car and van diagnostics depends on model year, diagnostic protocol, controller manufacturer and safe access to the vehicle. We confirm the vehicle details and reported symptoms before booking so the correct equipment and service method can be prepared.
Frequently asked questions
What is included in a full car diagnostic check?
The service can include a multi-module scan, warning-light and fault-code review, live-data analysis, module communication checks and targeted electrical or functional testing where appropriate. The exact process depends on the symptoms and vehicle.
Can you diagnose ABS, airbag and gearbox warning lights?
Yes, supported ABS, ESP, traction-control, airbag/SRS, engine ECU and automatic transmission TCM or TCU systems can be scanned and assessed. Further circuit or component testing may be required before confirming the cause.
Do you provide mobile car and van diagnostics in Birmingham?
Mobile appointments are available by arrangement across Birmingham and the West Midlands, including Harborne, Edgbaston, Stourbridge, Dudley, Halesowen, Wolverhampton, Solihull and surrounding areas, subject to safe access and technical suitability.
Can a diagnostic scan tell me exactly which part has failed?
Not always. A trouble code identifies the system and conditions in which a problem was detected; it does not automatically prove that the named component is defective. Live data, power, ground, wiring and functional tests may also be necessary.
Can you diagnose vehicle electrical and no-start faults?
Yes. Depending on the vehicle and symptoms, testing can include battery and charging voltage, ECU and body-module communication, immobiliser authorisation, power and ground checks, CAN/LIN network faults and relevant live data.
Do you diagnose vans and light commercial vehicles?
Yes, supported vans, pickups and light commercial vehicles can be diagnosed for engine management, DPF and emissions, ABS, airbag, immobiliser, charging, electrical and control-module faults.
What information should I send before booking?
Please send the registration or VIN, vehicle make and model, engine details, dashboard warning-light photos, fault codes if available, a description of the symptoms and the Birmingham or West Midlands postcode where mobile attendance is required.
Need a diagnosis or quotation?