I just bought a 2005 Uplander, when I bought it the brake and ABS lights were both on. I quickly found a broken wire on the left front ABS sensor and repaired it. I have an OTC Genesis scan tool and I cleared all codes. As soon as I started driving again the ABS light came on. The brake light stayed off. I am getting these two codes now:
C0040 - Right front wheel speed circuit malfunction
C0041 - Right front wheel speed circuit range/performance
I have inspected the wiring and don't see any physical problems at the right front wheel. I can see ABS speed data with the Genesis tool, and I always register a speed on the right front wheel equal to the speed of the other wheels when moving. I have cleared the codes a couple times and one of these two codes keep coming back soon after I start moving.
What can I look for?
Do I just have an intermittent problem that I haven't caught watching the wheel speed in the ABS diagnostics?
I don't want to replace the wheel bearing/sensor if it isn't bad, any ideas how to troubleshoot this further?
TIA, this site is full of great information!