Mazda B2031: Left Corner Lamp Output Circuit Failure

Is your scanner showing Mazda B2031?
No worries. We'll show you what it means and how to deal with it.

Presented by
OBDCodex, Editor

Mazda B2031: Left Corner Lamp Output Circuit Failure

DIY Difficulty Level
Repair Cost
Can I Still Drive?
Yes (Short-term only)

What Does The Mazda B2031 Code Mean?

The Smart Junction Box (SJB) sends reference signals to the multifunction switch through circuit (BR/L) (LH turn input) and circuit (BR/W) (RH turn input). When the multifunction switch is switched to the LH or RH TURN positions, the voltage signal is routed to ground. When the SJB detects the multifunction switch in the LH or RH TURN position, the SJB sends voltage to the appropriate turn lamps.

What Are The Potential Causes Of The Mazda B2031 Code?

  • Wiring, terminals or connectors
  • Multifunction switch
  • SJB

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Mazda A-Premium Multifunction Switch
>>> Mazda Mx-30 Junction Box

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Mazda B2031, DTCDECODE.

Tagged :
You know someone would like this

Leave a comment

Your email address will not be published. Required fields are marked *