So this means the sensor is ok and the problem is in the wiring or inside the module. You can find the pin out of the module connector and use ohmmeter to test continuity to ensure no broken wires or you make a cross-car jumper so you can connect the left side wiring to the right side sensor.

You actually can probably skip that step because the error you are getting is not a flaky signal you are getting a no signal error.

Do you start with no lights and they come on after some time ? The internal fault with the module is often affected by heat and vibration and will have the abs work on and off

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)