ECU Repair & Programming in Cardiff
ECU faults can look like sensor, wiring, immobiliser or communication problems. We combine diagnostic testing with ECU and module programming so the cause is checked before unnecessary parts are fitted.
Cloning, programming, coding and recovery.
Fault codes, live data, wiring and module communication.
Mobile South Wales and UK postal ECU service.
ECU and diagnostic support in Cardiff
Cardiff ECU services
We support ECU cloning, replacement ECU preparation, coding, immobiliser-related faults, non-start diagnostics, live-data analysis and performance calibration for many petrol and diesel vehicles.
Mobile diagnostics across Cardiff
For faults that need to be checked on the vehicle, mobile appointments may be available across Cardiff and nearby areas. Send your postcode, registration and fault codes first so we can assess the job.
Postal ECU option
If the ECU is already removed, it can be sent to us for assessment, cloning, programming or recovery. We confirm the required information before work starts.
Professional tools for modern control units
Depending on the vehicle, we work with systems from Bosch, Continental, Delphi, Denso, Siemens/VDO and Marelli. The exact ECU number and software version are checked before programming.
Have a fault code?
Send the registration, DTC and location. A photo of the ECU label or diagnostic scan can save time.
Check My VehicleBefore booking ECU work
Do I need to remove the ECU?
No. For mobile diagnostics the vehicle normally stays complete. Removal is useful for some cloning, bench programming and postal jobs.
Can a replacement ECU be made plug and play?
On many systems, yes, but the method depends on ECU family, immobiliser architecture and the condition of the original unit. We confirm compatibility first.
Can you diagnose a vehicle that already had parts replaced?
Yes. In fact, these jobs often benefit from checking live data, wiring, module communication and coding rather than replacing more parts.
Send Your Vehicle Details
Registration, fault codes and a short description help us recommend the right next step.