What it means
Communication with Remote Function Actuation was not received as expected. The code does not specify which remote or keyless functions are affected.
How it works
Remote Function Actuation receives or coordinates signals for vehicle remote and keyless functions and communicates status over the vehicle network. This code is set when the reporting module does not receive expected messages from Remote Function Actuation; it does not identify which remote functions are affected.
Common causes
Most likely first.
- RF receiver unpowered
- Gateway module routing CAN messages incorrectly
- CAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
How to diagnose it
- Record freeze-frame data and scan all modules for communication codes to check whether the fault is limited to Remote Function Actuation.
- Check battery condition and inspect the RF receiver's power supply and grounds, since a loss of power can stop its messages.
- Inspect the receiver connectors and wiring for corrosion, moisture, loose terminals, or damage.
- Use a capable scan tool to check whether Remote Function Actuation responds and whether the gateway reports communication with it.
- If several modules are offline, test the affected CAN network and termination against the manufacturer's specification.
Common fixes
- Restore a loose or corroded power, ground, or connector connection at the RF receiver.
- Replace a blown fuse after correcting the underlying cause.
- Repair damaged CAN wiring or connector terminals serving Remote Function Actuation.
- Correct a confirmed gateway routing or CAN termination fault.
- Replace the receiver or module only if its power, ground, and network path test correctly.
Can I keep driving?
The vehicle may still drive normally, but remote or keyless functions may be unavailable, so make sure you can unlock and secure it using an available method before travel. If starting or access functions are unreliable, avoid a trip that could leave you stranded.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.