Network, generic

U0214 Lost Communication With Remote Function Actuation Module

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

U0214 stands for the remote function actuation module, the receiver for key fob, passive entry or phone as a key. Ford calls it RFA: SSM 51571 (Mustang Mach-E 2021–2023) and SSM 54773 (Nautilus 2021–2023) describe phone as a key failing and U0214 in several modules because the RFA hangs in programming mode following an over-the-air update; one minute without the RFA fuse in the BCM and a reprogramming bring it back. GM bulletin 15-NA-004 (Acadia 2013–2016) lists U0214 with many other codes when the slow LAN line feeding the remote door lock receiver gets squeezed by the rear HVAC duct in the headliner, giving intermittent no-crank. Ford's 2014 list marks no MIL.

Likely causes

RFA module stuck in programming mode after an update (Ford)
LAN wire to the receiver pinched in the headliner (GM Acadia)
Fuse or supply of the receiver module
Receiver module faulty

Symptoms

  • Key fob, keyless entry or phone as a key inoperative
  • Intermittent no crank or radio and HVAC dropouts

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–500
Time0.2–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

rke receivercan bus wiring

Related codes

U0515U0140U0155U0213

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, performanceparts.ford.com.