[auIILTD]

Originally Posted by asimplelife

ABS light has started coming on in AU3 wagon.
Only happens after about 15 minutes of driving, at any speed, every time. And maybe after touching the brake?
Forscan shows ABS DTC C1233 - Left Front Wheel Speed Sensor Input Signal Missing.

I removed and cleaned the sensor and ring with brake cleaner.
Reset Forscan and code was gone and for about 2 weeks the ABS warning light no longer came on at all

However ABS warning light is now coming on again and Forscan is again showing code C1233.
If I replace the left front sensor will this likely solve he problem?
The fact that cleaning the sensor provided a short term fix would tend to indicate that?

All indications would say yes. Your only way to find out for sure is to replace it.

My guess is that replacing will fix it. If you are not sure, swap it with the RH one and see if the fault follows.