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A mechanic using an ECU reading machine A mechanic using a laptop to carry out engine diagnostics

Fault Finding and Diagnostics

As car manufacturers create ever more complex vehicles in which electrical systems communicate constantly with each other, the process of fault finding without the support of sophisticated equipment and manufacturer’s technical information is impossible. We have invested heavily in state of the art diagnostic equipment and have access to technical information for all major vehicle manufacturers and this helps us to provide fast efficient error free fault location. As a result of this we carry out diagnostic work for many local garages and car sales outlets.

•  Engine Management System lights

•  Diesel Particulate Filter faults

•  Airbag, ABS & Traction Control problem


•  Tyre monitoring

•  ECU re-programming

•  Central Locking & Electric Window faults

•  Instrument Cluster failure & malfunction

•  Wiring repairs

We undertake diagnosis and repairs for:

TWA Autoelectrics are pleased to offer you dealer level diagnostics on the following makes of vehicle:


•  VW, Audi, Skoda & Seat

•  Renault, Peugeot & Citroen

•  Ford & Mazda

•  Vauxhall, SAAB & Chevrolet

•  BMW & Mini

•  Mercedes & Smart

•  Jaguar, Land Rover & Range Rover

•  Volvo

•  Mitsubishi

•  Fiat & Chrysler

•  Nissan

•  Toyota & Lexus


Our dealer level diagnostic systems are equipped with software specifically designed to give functionality equal to tools used by your main dealership. This simply means less time and cost to you as you receive dealership quality at our superb prices and without the long wait often associated with main dealers.

With most engine diagnostics a good technician will know that not all faults can be rectified by replacing the sensor/s indicated by a code read. More often than not we find that faults stored in an ECU can actually be triggered by a different sensor failing or even faulty wiring leading to the sensor. At TWA we carry out in depth investigation and contact you for authority before replacing any parts or sensors, significantly reducing your repair bill.


It is important to remember that it is the combination of the skills and knowledge of the technician interpreting the information from the computer that will determine the quality and accuracy of any remedial work done!

Getting it right!

Trust in our experienced electrical engineers to find and diagnose faults with dealer level diagnostics. Call us on: 01633 264 222

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