Key Fob Battery Low
The key fob battery is running low and needs to be replaced.
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)
Your key fob sends a signal to the vehicle to unlock doors or start the engine. When the battery in the key fob is low, the signal may be weak or nonexistent.
What the computer is actually seeing
The vehicle's body control module (BCM) detects low voltage levels from the key fob battery, typically below 2.5 volts when it should be around 3 volts or higher for proper operation.
What a healthy reading looks like
Key fob battery voltage should typically be around 3 volts. Anything below 3 volts may trigger this code.
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 key fob battery voltage, it should be above 3 volts. If it's below, replace the battery and retest.
- 2Inspect the key fob for physical damage or corrosion around contacts. If damaged, replace the fob.
- 3Check for any interference from other electronics that might block the signal.
Common causes
- Weak key fob battery
- Poor connection at the key fob
- Interference from other electronic devices
Typical repair cost
$10-$50
Related codes
Frequently asked questions
Is it safe to drive the vehicle with this code?
Yes, it's safe to drive, but you may have issues starting the vehicle or unlocking doors with the key fob.
Will this code come back after replacing the battery?
If the battery was the issue, clearing the code should keep it gone. Monitor the fob's performance.
Why might this code pair with other codes?
It can indicate overall issues with the vehicle's keyless entry system, or malfunctioning BCM.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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