The check engine light, in a 2003 Honda Pilot and other vehicles, is essentially a catch-all for engine, electrical, emissions, fuel, and other systems' failures. The firSTStep You're going to want to take is scanning Your Pilot with an OBD-II diagnostic tool; the diagnostic trouble codes (DTCs) which have been set will point You in the correct direction. Without DTCs, it's impossible to determine what the cause of Your check engine light may be. However, some common failures include the EVAP emissions system (anything from a loose gas cap to a failed purge canister valve), spark plugs, thermostat, oxygen sensors, or fuel injectors. If You don't have access to a scan tool, most major automotive parts stores will scan Your Pilot free of charge.
Joe M.
April 9, 2020
If the check engine light come on in your 20003 honda pilot you may have an isuse with your car's o2 sensors, coolant or oil levels, an emissions leak or a loose gas cap.
The Questions and Answers on this page are the statements and opinions of their respective authors and not VehicleHistory.com. VehicleHistory.com
does not research or authenticate any of the Answers provided.