vacuum leak/intake leak,dirty/clogged injectors/dirty/faulty mass air sensor.
vacuum leaks
A P0174 error may occur when the Mass Air Flow is broken or dirty. Another cause is when there is a vacuum leak downstream towards the Mass Air Flow.
An ordinary furnace is not an engine at all, because it does not directly cause mechanical motion. The heat or expanding gases released in a furnace can be used to drive an engine, but that is a separate component from the furnace. If a furnace is used in this manner, the engine is an external combustion engine.
Fault code P0174 in Chevrolet SUV/Trucks indicates the engines fuel/air mixture is too lean. The most probable cause for this is usually a defective or malfunctioning engine exhaust oxygen sensor.
Combustion, yes can cause ozone issues. This is due to unburnt hydrocarbons.
a hydrocarbon
An ordinary furnace is not an engine at all, because it does not directly cause mechanical motion. The heat or expanding gases released in a furnace can be used to drive an engine, but that is a separate component from the furnace. If a furnace is used in this manner, the engine is an external combustion engine.
no cause there not bird
Your O2 sensors have detected too much oxygen in the exhaust, clean the MAF sensor, a dirty one is the most probable cause. If you are using an aftermarket ( oiled ) air filter too much oil will foul the sensor.
a hydrocarbon
No
a hydrocarbon