Diagnostic cases for working technicians

Start with a repair order. Choose your tests, read the results, back your diagnosis with evidence, then repair and verify. Every case ends with a debrief that explains the reasoning.

Create a free account Log in

Plans

Free membership

An account is all it takes.

The free case, from repair order to debrief
The Electrical Foundations series, with a meter, a current clamp and a scope
A sample of the FaultLab Guide
The Ohm’s law and volumetric efficiency calculators from Shop Tools

Paid membership

$24.99 per month

Every case, including members-only and real-job cases as they are released
The Virtual Shop: diagnose virtual vehicles against the clock
Circuit Labs: probe real automotive circuits with a test light, a DVOM, a current clamp and a 4-channel scope
ASE Study for G1, A1 to A9 and L1, with timed practice tests
The full FaultLab Guide and the Wave Form Library
The Technician Path and Shop Tools

Cancel any time from your account. If you cancel, you keep access through the date you have paid to.

Pro: Ask the Shop

Everything in the paid membership, plus written answers on your own real jobs from the shop’s diagnostic technician. Send your readings and captures with the question. Limited seats.

Shop packages

Seats for a whole shop or a training program, and a dashboard for the lead: each technician’s finished cases, ASE practice scores by area and Technician Path sign-offs.

FaultLab is not affiliated with or endorsed by ASE. Its study notes and practice questions are written for FaultLab by the shop; they are not ASE test questions, and passing them is not a certification.