fwiw, my abs system has been broken for like a decade now. both rears were definitely dead after the axle swap a couple years ago, but at least one of the fronts was hanging on. later on after more work I forgot to wire the 2 front sensors back in and then found out about the speedo issue so I put one back. I do have the 242.
BUT, 05 CRDs were very different than '06 CRDs so that could be the difference too.