Mitsubishi B1a10 -

A fault within the Keyless Operation System ECU (KOS-ECU) or WCM.

While a dying battery is the most common reason for this code, it is not the only cause. The issue typically falls into one of three categories: Description mitsubishi b1a10

To help provide more specific guidance, what is your Mitsubishi? Share public link A fault within the Keyless Operation System ECU

Storing the key fob too close to the vehicle (within 25 feet) for extended periods can drain the battery as it constantly communicates with the KOS. mitsubishi b1a10