What Does Hcat Mean On A Code Reader - Fuel as gasoline or diesel. Web when “hcat” appears on a code reader, it simply means that the vehicle’s onboard computer is monitoring. Web hcat stands for “heated catalyst monitor. ” it is a test to see if the vehicle’s catalytic converter is working. Ccm = comprehensive component monitor.
” it is a test to see if the vehicle’s catalytic converter is working. Web hcat stands for “heated catalyst monitor. Web when “hcat” appears on a code reader, it simply means that the vehicle’s onboard computer is monitoring. Fuel as gasoline or diesel. Ccm = comprehensive component monitor.