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2004 chevy trailblazer_lt
1,009 Posts
I think he meant OBD code. Few scanners can read ABS codes because of federal regulations. There are inexpensive dedicated ABS scanners though.

Are you sure about the B2530? I read that as a front fog lamp shorted to ground if the switch is off or shorted to voltage if the switch is on.

If it is B2530, check your fog lamps. If a bulb is out, replace it and it should go away. Otherwise, check for a corroded wire.

If it is simply stored in history, it will go away after 100 start cycles, so perhaps you are correct in that it relates to the circuit board in the tail light, especially if it has not been started/ stopped more than 100 times since the work was done.
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