Skip to content
SwitchyardMotor Works
(816) 555-0144West Bottoms · KC MO
02 DIAService detail

Engine Diagnostics

A code reader tells you which system complained. It doesn't tell you why. Our diagnostic hour is a technician with factory-level scan tools, a scope, and a wiring diagram, working your car's actual symptom until we can name the failed part and prove it. You get a written finding with photos. If you approve the repair, the diagnostic fee comes off the bill.

Starting at$135diagnostic hour, credited toward the repair
Book this service

Every visit includes

  • Full-system scan with factory-level tooling
  • Live-data and scope testing of the suspect circuit or component
  • Written finding: what failed, why, and the fix, with photos
  • Firm quote for the repair before any work
  • Fee credited toward the approved repair

Common pricing

Diagnostic hour (most symptoms)
$135
Extended electrical diagnosis
quoted after first hour
Pre-purchase inspection (40-point)
$149

Real numbers, not teasers; final quotes depend on your exact vehicle and get texted to you in writing before any work starts.

Fair questions

The parts store already read my code for free. Why pay?

That code is where we start, not where we finish. A P0301 misfire can be a $22 plug or a $2,800 injector job. The diagnostic hour exists so you only pay to fix the actual cause, once.

What if you can't find it?

If we can't reproduce or isolate the fault in the first hour, we stop and talk to you before spending more of your money. No mystery invoices.