U0214
Lost Communication With Remote Function Actuation Module
Network communication
Generic OBD-II
Low
What it means
U0214 sets when a module can no longer communicate on the data bus with the Remote Function Actuation Module — the module that receives key-fob and keyless-entry signals for locking, unlocking, and remote start. The engine and driving systems are unaffected, so the car starts (with the key) and drives normally; it's the remote/keyless conveniences that stop working.
Low
Can I keep driving? Yes — keyless entry and remote functions stops working, but the engine, brakes, and steering are unaffected, so you can keep driving until it's convenient to repair.
Common symptoms
What you'll notice
- Key-fob remote lock/unlock stops working
- Remote start (if equipped) won't respond
- Passive/keyless entry may fail — you may need the physical key
- A keyless-system warning message may appear
Common causes
Most likely first
- Corroded, loose, or damaged connector at the module or an inline body connectorLikely
- Chafed, broken, or shorted wiring in the communication (CAN) circuit to the moduleCommon
- Loss of switched power or ground to the affected moduleCommon
- Water intrusion into a body/door connector or the module itselfLess often
- Failed module with an internal faultLess often
- A wider data-bus problem pulling the network downLess often
How to diagnose & fix
Work through it in order
- Scan every module and note all U-codes first — several codes together point to a bus or gateway fault rather than one module.
- Inspect the connector and harness at the module for corrosion, bent pins, water, or chafing.
- Confirm the module has good switched power and a clean ground with a multimeter.
- Check communication-bus continuity and resistance from the module back to the network.
- If wiring and power are good, the module is likely faulty — replace and program/configure it as required.
- Clear the code, recheck, and confirm the affected feature works and the code stays gone.
FAQ
Quick answers
Is it safe to drive with U0214?+
Yes. U0214 affects only keyless entry and remote functions; it has no effect on the engine, brakes, or steering, so the car starts and drives normally. Repair it to restore the feature.
Can I just clear U0214?+
You can clear it, but if the module is still off the bus the code returns almost immediately. Fix the wiring, connector, power/ground, or module first, then clear and confirm the feature works.
Related codes
Often seen with U0214
Read & clear U0214 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX