Modern Mechanic OBD Car repair

Check engine light just came on. Now what? Modern Mechanic tells you what's wrong, how serious it is, what it costs, and how to fix it. In plain English. Completely free. No subscription, no ads, no paywalls. Ever. Describe any symptom in your own words, no light required, and get a specific answer built around your car. Works with any OBD2 scanner and any car. Need a scanner? We make one at modernmechanic.us Joined by drivers who got real answers without the dealership bill.