"Guv Bob" fired this volley in
m:

nyway, I need to either figure out how to rebuild the air flow sensor
assy

Bob, the likelihood that you'd find the _exact_ thermistors or resistance
wire they use for the flow sensor is remote.

FWIW, sometimes they fail for accumulated grunge on the sensing elements.
If your unit has resistance wires, be warned that you cannot touch them
mechanically in any way, or you'll stretch or break them. If the unit
uses thermistors (little epoxy bead-like things in the airflow), you can
clean them gently with a soft brush.

But in either case, a good soaking in a mild solvent like denatured
alcohol, followed by a rinse and thorough drying is about all you can do.

They truly don't fail very often. Most often, it's a false code because
of other un-interpretable symptoms, bad connectors, or a bad harness.

LLoyd