B1318 — Renault

If you’ve plugged an OBD2 scanner into your Renault Clio, Megane, Captur, or Dacia Sandero and seen the code staring back at you, you’re not alone. Unlike common engine-related P-codes (like P0171 or P0300), the "B" prefix indicates a Body code—meaning the issue lies within the vehicle’s interior electronics, lighting, or passive safety systems.

In a Renault vehicle, typically refers to a Diagnostic Trouble Code (DTC) indicating "Battery Voltage Low at Module" . This code is triggered when the vehicle's control modules detect that the battery's voltage has dropped below a specific threshold (often around 10V or less). Common Symptoms renault b1318