Remote Keyless Entry (RKE) Transmitter Battery Low
Indicates that the battery in the remote key fob is low.
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 computer detects that the battery in the key fob is getting weak or nearly dead, which could make it unreliable for unlocking doors or starting the vehicle.
What the computer is actually seeing
The RKE module monitors the voltage of the key fob's battery. If the voltage drops below a certain threshold, usually around 2.5 volts, it triggers this code.
What a healthy reading looks like
Key fob battery voltage should ideally be around 3 volts. Anything significantly below that (like 2.5 volts or less) indicates a low battery.
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.
- 11. Check the battery voltage of the key fob using a multimeter. Expected is 3 volts. Decide: If voltage is low (less than 2.5 volts), replace the battery.
- 22. Inspect the key fob contacts for corrosion. Clean or replace if needed. Decide: If corrosion is present, fix it and retest fob operation.
- 33. Verify key fob operation after battery replacement. Try using it to unlock the doors. Decide: If it works properly, the issue is resolved. If not, check for a faulty fob or RKE module.
Common causes
- Weak key fob battery
- Corrosion in the battery contacts
- Intermittent connection in key fob circuitry
Typical repair cost
$20-$50
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, the vehicle remains operable, but keyless entry may not work intermittently.
Will this code come back after I change the battery?
If the new battery and the fob contacts are good, it shouldn't return.
Why is this code paired with other key fob codes?
These codes often indicate related issues with the key fob system.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →