Check Engine Light & Computer Diagnostics in Chicago

Check engine lights and full system scans.

All repair services

A check engine light can mean anything from a loose gas cap to a failing catalytic converter. We pull the trouble codes with professional scan tools, then actually test the circuit or component the code points to instead of guessing. You get a plain-English explanation of what is wrong, what it costs and what can wait.

Signs you need this service

  • Check engine, ABS or traction control light is on
  • Car runs rough, stalls or hesitates
  • Poor gas mileage with no obvious cause
  • Another shop replaced parts and the light came back

What the service includes

  • Full trouble-code scan of engine, transmission and body modules
  • Live data and sensor testing
  • Smoke testing for vacuum and evap leaks
  • Written diagnosis with repair estimate before any work starts

Schedule Service

Tell us about the vehicle and the problem. We'll call to confirm your appointment time.

Visit A1M in Chicago

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