Keyless Entry Module Circuit Malfunction
There’s an issue with the keyless entry module circuit.
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 keyless entry system isn't getting the correct signal from the module, which might be due to a wiring or connection problem.
What the computer is actually seeing
The computer monitors the keyless entry module for proper signal voltages. When it detects a voltage outside the expected range, it triggers the fault code.
What a healthy reading looks like
Expected voltage at the keyless entry module is generally between 5.0V to 12.0V depending on the system architecture.
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. Inspect the keyless entry module for physical damage or corrosion. Decision: If damaged, replace the module.
- 22. Check the wiring harness and connectors for frays, breaks, or corrosion. Decision: Repair or replace as necessary.
- 33. Test the voltage at the keyless entry module connector. You should see 5.0V to 12.0V. Decision: If voltage is low or absent, trace the circuit back for shorts or opens.
- 44. Check the ground connection for the keyless entry module. Decision: If the ground is faulty, repair it.
- 55. Replace the keyless entry module if all previous checks are good and there are no wiring issues.
Common causes
- Bad keyless entry module
- Corroded or loose connector
- Wiring harness issue
- Faulty ground connection
- Dead or weak battery in remote
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, it’s safe to drive, but you won’t have keyless entry functionality until it’s fixed.
Will this code come back after clearing it?
If the underlying issue isn't resolved, it will likely return after clearing.
Why does this code pair with B1442?
B1442 typically indicates a related issue with the keyless entry module, often pointing to additional circuit problems.
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 →