Why Is Your Dodge Hornet Check Engine Light On?
The Hornet shares Stellantis electronics with other modern Dodge vehicles. The MIL usually lights up due to misfire (ignition coil or plug), EVAP leaks (fuel cap, purge valve), sensor correlation faults (throttle/MAP) or hybrid/turbo issues depending on trim. Scan for DTCs, diagnose the subsystem, repair the fault, and clear the MIL with a scan tool. Afterward, drive a mixed route to complete readiness monitors.
Watch for official TSBs, as early Hornet software updates often resolve MIL complaints.