The most frequent interpretation of B123A in Renault models like the is a fault within the parking assist system , specifically indicating a problem with one of the ultrasonic sensors located in the rear bumper.
If you’ve hooked up an OBD-II scanner to your Renault and seen the cryptic
Begin with a simple visual check. This is the easiest and most cost-effective step. dtc b123a renault link
: Left Front Turn Indicator - Circuit Short to Battery or Open Circuit . Visual Indicators :
The sensor physically attached to the negative battery terminal has failed internally. The most frequent interpretation of B123A in Renault
In rare instances, particularly with the Renault Captur, using seat belt extenders can cause this error to display due to the seat belt sensor being misinterpreted by the system.
The DTC for Renault vehicles typically relates to a fault in the hands-free card detection system or the steering column lock control . However, diagnostic codes can vary slightly by model and year. : Left Front Turn Indicator - Circuit Short
The solution is entirely dependent on the diagnosed cause. Below is a summary table of typical repairs.
If you own a modern Renault (particularly the Captur, Clio, or Megane), you might be familiar with the dreaded "Check Stop & Start" warning light. When scanned with a professional tool, this message often accompanies a specific, non-generic diagnostic trouble code: .