Battery Current Sensor Circuit Low
The battery current sensor is reporting a low current condition.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The battery current sensor helps monitor how much power is flowing in and out of the battery. If it's faulty or has a weak signal, it can incorrectly report that not enough current is present, which could lead to battery or charging issues.
What the computer is actually seeing
The engine control module (ECM) expects a specific voltage signal from the battery current sensor. The normal operational range is between 0.5V to 4.5V. If the voltage falls below this range, the ECM sets the B247C code.
What a healthy reading looks like
Expect battery current sensor voltage between 0.5V to 4.5V; typically around 2.5V when charging correctly.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the wiring and connectors for the battery current sensor for corrosion or damage. Are they good? If not, repair or replace them.
- 2Verify the battery voltage. Is the battery reading above 12.4V? If not, charge the battery.
- 3Inspect the battery current sensor itself. Using a multimeter, check for the expected voltage range (0.5V to 4.5V). Is it within range? If not, replace the sensor.
- 4If the sensor is good, check the ECM for any related codes or issues. Are there additional codes present? If yes, address them accordingly.
Common causes
- Faulty battery current sensor
- Open or shorted wiring in the sensor circuit
- Corroded or loose battery terminals
- Weak battery or charging system issues
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive my vehicle with this code?
Yes, but it may cause battery charging issues over time. It’s best to address it soon.
Will the code come back after clearing it?
If the underlying issue isn't fixed, yes, expect it to return.
Why does this code pair with other codes?
Interrelated vehicle systems can trigger multiple codes, especially if they share wiring or sensors.
Working a real vehicle right now?
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