As far as I know, in AZ, any stored fault code, no matter if it turns on a CEL or not, will cause a vehicle to fail the state emission test.
The state only uses a sniffer on the pre OBD2 vehicles.
When a vehicle has a separate transmission module only certain transmission codes would cause an emission test failure. At least this has been my experience.
Not sure why a blower motor would cause a CEL unless it’s because of its use in the defrost mode and it’s considered a safety item???! Just guessing, no clue.
The state only uses a sniffer on the pre OBD2 vehicles.
When a vehicle has a separate transmission module only certain transmission codes would cause an emission test failure. At least this has been my experience.
Not sure why a blower motor would cause a CEL unless it’s because of its use in the defrost mode and it’s considered a safety item???! Just guessing, no clue.
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