Pinpoint Test R : The RKE (Remote Keyless Entry) Transmitter Is Inoperative (With Push Button Start): Notes

WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operations and Fault Conditions

REFER to: Handles, Locks, Latches and Entry Systems - Vehicles With: One-Touch Open and Close Front Windows - System Operation and Component Description .

RFA Module DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
B10AB:00	Remote Keyless Entry Synchronization: No Sub Type Information	Sets when the RFA module detects the rolling counter received from a RKE transmitter is out of synchronization with the rolling counter stored in the module.
U201F:00	External Receiver: No Sub Type Information	Sets when the RFA module has lost communication with the Radio Frequency (RF) Receiver. A short to ground or voltage in the communication circuit can cause this DTC to set.
U201F:13	External Receiver: Circuit Open	Sets when the RFA module has lost communication with the Radio Frequency (RF) Receiver. An open in the communication circuit can cause this DTC to set.
U201F:29	External Receiver: Signal Invalid	Sets when the RFA module has lost communication with the Radio Frequency (RF) Receiver.

Possible Causes

Passive key battery
Passive key
Passive key button pressed a substantial amount of times while outside the range of the vehicle
Passive key programming
Network concern
Radio Frequency (RF) Receiver
RFA module

Visual Inspection and Diagnostic Pre-checks

Inspect the BCM fuse 81 (5A)
Inspect the passive key for damage
Check for aftermarket passive keys