[bgalakazam]

Completed a long 1000+ km trip this weekend. Yesterday got a few faults for ABS and then DSC and the car would only stay in Comfort and say drive moderately. I couldn't get to ISTA that day and today the error went away. The day was very hot, but I doubt that would make the malfunction. Here is a list of codes I scanned today, all show Existent: No.

1B0A21 Rough road detection: no wheel speed signal received
421474 Output speed and wheel speed: Impermissible deviation
480686 Wheel speed sensor: Drive-off recognition, rear right
48071B Wheel speed sensor: Voltage supply, short circuit, rear right
480AB1 Wheel speed sensor: sporadic fault, rear right
480AB4 Wheel speed sensor: Plausibility, signal fault, rear right
CD944D Signal (actual wheel speed, 46.0.1) invalid, transmitter DSC
CF2F02 Signal (actual speed of rear left/front left/rear right/front right wheel, 0x254) invalid,
D017A3 Signal (actual number, signal edge, wheel, 64.1.2) invalid, transmitter DSC
D017C5 Interface DSC (actual speed, wheel, 46.0.1): Signal invalid
D017C6 Signal (actual wheel speed, 46.0.1) undefined, transmitter DSC
D36D58 Signal (wheel torque, powertrain 1, 0X08F) invalid, transmitter DME/DDE

I also have stage 2 Bootmod3 if that matters at all.

Should I replace the sensor proactively or just wait until another fault appears? The error looked sporadic and there were no issues in driving.

[Billfitz]

Clear the fault, then run the sensor test. I don't know if your software can do that, my Foxwell NT510 can. I had this happen one time, cleared the codes and tested the sensor, which tested good. This was over two years ago, it never happened again.

[Polo08816]

Originally Posted by Billfitz

Clear the fault, then run the sensor test. I don't know if your software can do that, my Foxwell NT510 can. I had this happen one time, cleared the codes and tested the sensor, which tested good. This was over two years ago, it never happened again.

+1. Clear the faults and see if it occurs again. The faults seem to indicate something is wrong with the rear right wheel speed sensor.

[bgalakazam]

Error keeps comming back and then going away after a power off. I'll start with the speed sensor as it's easiest and cheapest.

[Billfitz]

All of those codes would be caused by a defective or unplugged speed sensor.