Sooooo, with DD off the road now for the past couple of months (MOT ran out and abs light has been on for a while) decided to get working on her.
Used the Civic5 ABS guide and found it was throwing code 15 which is RR sensor. Funnily enough, this is the one I suspected as I had her at the garage a while back to get new rear discs/pads fitted that I'd bought. I couldn't get the caliper bracket bolts out on that side when I was fitting them myself so had to get garage to do it. When we got her back, all was fine until a week later the ABS light of doom came on, so guessing they had either disturbed something/poss damaged it while getting the bolts out.
Anyhoo, moving forward I got the old one off (she fought me every step of the way! Most bolts holding the sensor cables in place either rounded off or sheared (or both!). Once off, tested it with my multimeter which showed zero resistance so indeed gubbed. ordered a new one, and got it fitted in place (Cable tied at one bit due to still needing to sort out the sheared bolts). Fired her up, bloody abs light still on! Did the whole code thing again, and now showing codes 15 and also 17 now which is RR sensor and LR sensor. Thought what the?? Tested both sensors in situ, both gave correct ohms readings. Looked at the fault codes again and it also states it could also be short/no power to sensors. Unplugged em at rear, checked with meter and 4.5 volts there. Not sure what it's meant to be, still trying to find that out. But least I know some kind of power getting there. Plugged it all back in then went and pulled the fuse for the ecu to make sure the memory is cleared.
Ignition on, abs light went off!! Started her up, it stayed off for about a minute then came back on again!! Still same two codes. Decided to pull the ecu fuse again and leave it out for 10 mins. Fuse back in, ABS light now going off as normal and staying off. Not sure if it's fixed or not as need to get her back onto her wheels and test drive. If ok, think it may have been a dodgy connection for the second fault. No light on now so that'll do for me!
Only pic I have is of comparing the old/new ABS sensor. Cost £44 delivered so well happy (even if it did take a week and a half to come). Big diff to the last one replaced (think it was £200 from Honda!)
Old one
And the old/new comparison