Standard Ignition BSC99 Battery Current Sensor

Battery Current Sensor for Mazda 3 and 6

Standard Ignition BSC99 is a battery current sensor for select Mazda charging system applications. It is built with a female connector, one connector cavity, male blade terminals, and two terminals for direct electrical interface in the vehicle harness.

Key Features

• Battery current sensor for charging system monitoring
• Female connector with 1 connector opening
• Male blade terminals with 2 terminal contacts
• Direct-fit electrical component for select Mazda applications
• Standard Ignition BSC99 replacement part number

Application Details

Compatible with 2014-2018 Mazda 3 and 2014-2017 Mazda 6 charging system setups. This sensor supports battery current measurement used by the vehicle’s electrical control strategy, helping the system track charging and power flow more accurately. Standard Ignition BSC99 is also cross-referenced to BCSA33 for the same application.

What This Part Helps Address

• Battery current sensor fault codes
• Charging system warning lights
• Incorrect battery current readings
• Electrical load management issues
• Charging performance concerns tied to sensor failure

Installation Notes and Tips

Verify connector style, terminal layout, and vehicle fitment before installation. Match the original sensor location and inspect the harness terminals for corrosion, looseness, or heat damage before connecting the replacement part. Confirm the application by year, make, and model: Fits 2014-2018 Mazda 3 and Fits 2014-2017 Mazda 6.

Quality Assurance

Standard Ignition is a recognized aftermarket source for electrical and engine management components, and BSC99 is cataloged for direct application matching on the listed Mazda vehicles.