Ensure the terminal on the battery is tight and the small clip-on sensor wire is fully plugged in
Depending on your diagnosis, here are the fixes: dtc b123a renault
is a manufacturer-specific code that primarily appears in modern Renault vehicles, including popular models like the Clio, Megane, Captur, Kadjar, and Zoe . Ensure the terminal on the battery is tight
Move the seat all the way forward and backward. Look for pinched wires. Also, check for coins, french fries, or water under the seat that might have corroded the connector. including popular models like the Clio
Moisture ingress in the headlamp plug or the BCM (often located in the cabin or engine bay).
Although simple, a bulb with an internal short can trigger the code.
