12 April 2021

Got The Codes Cleared

JT found 32 (!) stored codes on The Precious!

He cleared them and the light, briefly, went out.

Then came back on when I restarted the car.

Down to one code.

B1001.

This code sets when:

  • The last 4 digits of the SDM (sensing and diagnostic module) part number does not match the last 4 digits stored in the BCM (body control module).
  • The VIN stored in the BCM does not match that of the vehicle.

Yes, but what does that mean?

The diagnostics aid says, "This DTC is an indication that an incorrect SDM is installed in the vehicle, or that the SDM and/or the BCM were replaced without reprogramming the BCM with the new information."

DING!

This connector has been faulty for a good long time.  It's very likely that the SDM wasn't communicating when I had the BCM replaced and, thus, didn't get its number recorded during the BCM set up.

I feel better now!

Now I just need to find someone with a full Tech-2 and subscription to flash the SDM's information and all will be well.

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