Considering how many of these went bad, it would be unwise to try and
install anything other than brand-new. I believe the new ones are upgraded
from the original.
I don't think there's any aftermarket source, but there is a source for
If you really want to get rid of that P1456 or P1457 or whatever you've
got, your best bet is to bite the bullet and get a new one from the dealer.
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