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Engine-Codes – Generic – U017A

U017A Code - Lost Communication With Restraints System Sensor 'K'

Quick Answer

The diagnostic trouble code U017A indicates that there is a communication error between the vehicle's onboard computer system and the Restraints System Sensor 'K'. Common causes include Faulty Restraints System Sensor 'K', Wiring harness issues, Corrosion or damage to electrical connectors. 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
U017A indicates Lost Communication With Restraints System Sensor 'K'.
Common causes
Common causes include Faulty Restraints System Sensor 'K', Wiring harness issues, Corrosion or damage to electrical connectors.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code U017A Description

The diagnostic trouble code U017A indicates that there is a communication error between the vehicle's onboard computer system and the Restraints System Sensor 'K'. The Restraints System Sensor 'K' is responsible for monitoring and detecting any issues related to the vehicle's restraint system, such as airbags and seatbelt pretensioners. When communication with this sensor is lost, it can potentially compromise the effectiveness of the vehicle's safety systems.

OBDII Code U017A - Lost Communication With Restraints System Sensor 'K'
U017A Code - Lost Communication With Restraints System Sensor 'K'

Common Causes of U017A

  1. Faulty Restraints System Sensor 'K'
  2. Wiring harness issues
  3. Corrosion or damage to electrical connectors
  4. Faulty vehicle computer system
  5. Software glitches or communication errors

Symptoms of U017A

  1. Airbag warning light illuminated on the dashboard
  2. Inability to activate/deactivate passenger airbag
  3. Faulty seatbelt warning indicator
  4. Unusual or erratic behavior of the vehicle's safety systems

How to Fix U017A

  1. Diagnose the issue using a professional diagnostic scanner to pinpoint the exact cause of the communication error.
  2. Inspect the wiring harness and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the Restraints System Sensor 'K' for proper functionality. Replace if found to be faulty.
  4. Check and reset the vehicle's computer system to clear the error code and re-establish communication with the sensor.
  5. Perform a thorough test drive to verify that the issue has been resolved and that the vehicle's safety systems are functioning correctly.

Cost to Fix U017A

The cost of repairing the U017A code can vary depending on the specific cause of the communication error. On average, the repair costs for this issue can range from $150 to $500, including parts and labor. However, it is essential to note that diagnostic time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and the complexity of the repair. It is recommended to consult with a trusted mechanic or dealership to obtain a more accurate estimate for this repair.

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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.

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