RKHS Module Communication Error
Communication issue with the RKHS module.
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 vehicle's computer is having trouble talking to the RKHS (Rear Keyless Entry) module, which can affect functions like remote locking or unlocking.
What the computer is actually seeing
The main computer is not receiving expected signals from the RKHS module, potentially due to signal loss or a fault in the communication line.
What a healthy reading looks like
The RKHS module should send and receive proper signals, typically at voltages of 5V to 12V on the CAN bus; any significant deviations can 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.
- 11. Inspect RKHS module connectors for corrosion or loose connections. If damaged, repair or replace as necessary. Decision: If fixed, clear the code and retest; if not, proceed.
Common causes
- Dirty or corroded connectors on the RKHS module
- Damaged wiring harness between the RKHS and the main computer
- The RKHS module itself is faulty
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but you may have issues with keyless entry functions.
Will this code come back after clearing?
If the issue is not resolved, it may return.
Why does this code pair with B162A?
B162A indicates a similar communication problem, often related to the same issues with wiring or modules.
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 →