May be as simple as changing a relay that has gone bad. Code is set
because a system relay contact or coil circuit is open, then again it
could be open because a sensor has gone bad and it needs to be
replaced. Swap some like relays around and see if the code changes.
How does your manual setup the diagnostic process?
Have you done anything to the wheels lately or been off the road,
maybe in some very heavy water that could have moved a wheel speed
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