Just passing on my experience. A couple of months ago I had my trifecta come back on after having the module rebuilt/repaired. I ran a test on the 4 wheel sensors. They all were sending signals to the ABS module/computer. AFter sending the ABS module back in for a check, it came back fine. So, started replacing the wheel sensors I hadn't done yet, and bang, front right solved it. Just telling you this because mine appeared to be working fine, but weren't'. Take it for what you will.

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Dave S.
Northeast
2003 4.6is
2005 E53 4.4
2003 E39 Msport(a REAL ONE!)
1959 Fiat 600