Dtc B123a Renault — Link

The two-wire connector on the battery's negative terminal often suffers from corrosion or wire breaks. One wire provides 12V power, and the other (often pink/black) carries the LIN bus signal to the UPC.

: Internally damaged lamp sockets can cause intermittent contact or shorts. dtc b123a renault link

No. The airbag ECU has non-volatile memory. Disconnecting the battery will not clear B123A. You must use a diagnostic scanner. The two-wire connector on the battery's negative terminal

: Corroded, bent, or pushed-out pins in the headlight connector or wiring harness. dtc b123a renault link