We had that fault last year... My Sealey code reader showed no fault, but the OBD was adamant that a fault existed... I took the car to a local indie and his code reader showed a fault with the NSF abs sensor... The fault only showed when the car was in motion though, so a quick shuftie was in order... The indie found that the NSF reluctor ring (metal ring with circular inside dia and castellated outer dia) fitted to the NSF outer CV joint was actually cracked (we had an "incident" with a rock on that corner earlier in the year, it made the wheel a very romantic heart shape too..!!).
I figure that the rock actually hit this ring too ' because it was cracked, causing just one of the gaps between the high points of the castellations to be slightly wider than the others... As soon as the car started moving, the sensor detected the uneven pulses and flagged up a fault...
The part is available separately at a coat of about £14...
I'm told that "excessive" corrosion and debris in the reluctor ring can cause similar problems...
It's a PITA to fix, as the drive shaft has to be withdrawn from the wheel bearing in order to get the new ring on, so labour is much higher than parts costs... Cheaper than an ABS sensor or control unit though... '-)
Miti
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Jan 4th, 2011, 12:12
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