Standard Ignition Battery Current Sensor P/N:BSC12
Standard Ignition BSC99 sensor for the 2014-2018 Mazda 3 4-cylinder 2.0L or 2.5L and other vehicles measures the battery's charge and discharge. The part is a battery current and voltage sensor.
A battery or charging warning light, or a battery that charges poorly, can be signs of a failing battery sensor, though a weak battery, damaged wiring or a charging fault can show up the same way. With the engine off, look over the sensor connector and wiring for corrosion, damage or a loose fit; a shop can test the sensor's signal.
This sensor is a direct-fit OE replacement for the 2014-2018 Mazda 3 4-cylinder 2.0L or 2.5L and the 2014-2017 Mazda 6 4-cylinder 2.5L.
Fit and size
Build and materials
One sensor. This listing holds one, and a car it fits takes one.
Interchange: CTB101 · BCSA33 · SBC101 · PE05188A1
This part cross-references / interchanges with the following part numbers:
Is Standard Ignition BSC99 the Mazda 3 sensor for 2014-2018 cars with the 4-cylinder 2.0L or 2.5L?
Yes. Standard Ignition BSC99 fits the 2014-2018 Mazda 3 4-cylinder 2.0L or 2.5L, and the car takes one sensor.
Is there a Mazda 6 sensor in this listing for 2014-2017 cars with the 4-cylinder 2.5L?
Yes. This battery sensor fits the 2014-2017 Mazda 6 4-cylinder 2.5L, one sensor per car.
What kind of terminals does the BSC99 battery sensor have?
Standard Ignition BSC99 has two male blade terminals and one female connector.
What does this battery sensor send to the vehicle computer?
It reports how the battery charges and discharges. That input lets the computer adjust charging voltage, idle speed and other parameters.
Does Standard Ignition BSC99 replace sensor number CTB101?
Yes. CTB101 is listed as an interchange number for Standard Ignition BSC99, so this sensor replaces it.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.