AutoCodes – Generic – U017F

U017F Code - Lost Communication With Seatbelt Pretensioner Module 'B'

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Seatbelt Pretensioner Module 'B', Seatbelt Pretensioner Module 'B' harness is open or shorted, Seatbelt Pretensioner Module 'B' circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U017F indicates Lost Communication With Seatbelt Pretensioner Module 'B'.
Common causes: Common causes include Faulty Seatbelt Pretensioner Module 'B', Seatbelt Pretensioner Module 'B' harness is open or shorted, Seatbelt Pretensioner Module 'B' circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 3,423

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U017F Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Seatbelt Pretensioner Module 'B' has not been received.

OBDII Code U017F - Lost Communication With Seatbelt Pretensioner Module 'B' - AutoCodes.com — U017F Code - Lost Communication With Seatbelt Pretensioner Module 'B'

What does this mean?

What are the Possible Causes of the DTC U017F?

Faulty Seatbelt Pretensioner Module 'B'
Seatbelt Pretensioner Module 'B' harness is open or shorted
Seatbelt Pretensioner Module 'B' circuit poor electrical connection

How to Fix the DTC U017F?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U017F code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U017F code?

Need more information on how to fix the U017F code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U017F code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U017F Code

What are the common symptoms of OBDII code U017F?

- Common symptoms of code U017F include the airbag warning light on the dashboard, issues with the seatbelt pretensioner system, and potential loss of communication with the seatbelt pretensioner module.

What are the possible causes of OBDII code U017F?

- Possible causes of code U017F include a faulty seatbelt pretensioner module, damaged wiring or connectors related to the module, software issues, or a communication error between the module and the vehicle's onboard computer.

How can I diagnose OBDII code U017F?

- Diagnosing code U017F typically involves using a professional OBDII scanner to read the fault codes, checking the wiring and connectors associated with the seatbelt pretensioner module, and performing a communication test between the module and the vehicle's computer system.

Can I still drive my vehicle with OBDII code U017F?

- It is not recommended to drive your vehicle with code U017F present, as it indicates a potential issue with the seatbelt pretensioner system, which is a crucial safety component in the event of a collision.

How can I repair OBDII code U017F?

- Repairing code U017F may involve replacing the seatbelt pretensioner module, repairing or replacing damaged wiring or connectors, updating software if necessary, and ensuring proper communication between the module and the vehicle's computer system.

Is it safe to reset the OBDII code U017F without fixing the underlying issue?

- It is not safe to reset the code without addressing the underlying issue, as it could compromise the functionality of the seatbelt pretensioner system and potentially jeopardize safety in the event of an accident.

What should I do if I encounter OBDII code U017F multiple times after repair attempts?

- If code U017F keeps reappearing after repair attempts, it may indicate a persistent issue with the seatbelt pretensioner system or the communication between the module and the vehicle's computer, and further diagnosis by a professional technician may be necessary.

Can a DIY enthusiast repair OBDII code U017F, or should I seek professional help?

- While some DIY enthusiasts may be able to address code U017F by checking wiring and connectors, replacing the module, or performing basic diagnostics, it is recommended to seek professional help for a thorough diagnosis and repair to ensure the safety and functionality of the seatbelt pretensioner system.