Had previous issue with z32 maf sensor. Engine light comes on no throttle control, cannot rev over 2000rmp (sometimes can) flash code 28 "cooling fan circuit"
Old z32 maf was 2nd hand and untested so replaced with brand new genuine Hitachi from horsham developments last year which sorted the problem.
Been working on car alot recently replaced manifold/turbo gaskets so had maf removed and the fault is back again.
Replaced maf connector plug wiring as pins didn't look great from old unit no joy
Good earth, 12v feed surely new maf can't be knackered after a few months? But flash code 28?? Anybody had this?

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