Diagnostic Trouble Code - DTC

What is a DTC ? How to work with them to resolve vehicle faults

Control Systems

What is a System? Why are Systems important when working with DTCs?


Welcome to Think System Diagnostics!

Think System Diagnostics is a website written by automotive engineers who have decades of experience working for new vehicle manufacturers within electrical engineering departments; we are the people who work with and define the diagnostic systems and Diagnostics Trouble Codes on the vehicles you drive.
This website has been designed to offer ‘insider know how’ to help unravel the often confusing world of automotive Diagnostics Trouble Codes or DTC’s and to try to explain why the ‘System’ should always be considered when investigating an automotive DTC.