U0197
Lost Communication with Hands-Free Phone Control Module
The infotainment system cannot reach the hands-free phone controller. Bluetooth telephony, address book sync and emergency call features may be unavailable.
The infotainment system cannot reach the hands-free phone controller. Bluetooth telephony, address book sync and emergency call features may be unavailable.
Common causes
- high
Hands-free module unpowered
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-550
- low
Gateway module routing CAN messages incorrectly
Less common, but worth ruling out after the more likely causes.
Typical part cost: $70-550
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for U0197.
Unlock causesFree forever · No credit card
First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
Get the full step-by-step diagnosis
Create a free Wrenchify account to unlock the rest for U0197.
Unlock diagnosisFree forever · No credit card
Related codes
See related trouble codes
Create a free Wrenchify account to unlock the rest for U0197.
Unlock related codesFree forever · No credit card
Frequently asked questions
What does U0197 mean?
U0197 means "Lost Communication with Hands-Free Phone Control Module". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U0197?
hands-free module unpowered; gateway module routing can messages incorrectly; can terminating resistor (120 ω) drifted out of spec — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
Get the full U0197 diagnosis for your vehicle
Year, make, model + step-by-step repair help — free plan included.