What Does U017F Mean?
Communication has been lost between the airbag control module and seatbelt pretensioner module B, typically the passenger side. This network failure compromises the supplemental restraint system operation.
Safety Warning
Passenger side seatbelt pretensioner will not activate during collision. Airbag system effectiveness is compromised, increasing occupant injury risk.
Common Causes
35%
Damaged or corroded wiring harness to pretensioner module B
30%
Faulty seatbelt pretensioner module B
20%
Poor ground connection at pretensioner module
10%
CAN bus network fault affecting passenger side circuits
5%
Airbag control module malfunction
Diagnostic Steps
1
Step 1: Inspect connector at seatbelt pretensioner module B for corrosion, damage, or loose pins
2
Step 2: Verify power and ground at pretensioner module B connector using multimeter
3
Step 3: Test communication circuit continuity and resistance between modules
4
Step 4: Check for CAN bus voltage and signal integrity at pretensioner module B terminals
5
Step 5: Replace pretensioner module B if all electrical circuits test within specification
Estimated Repair Cost
$300 - $1,200
Parts + labor, varies by vehicle and location
Communication has been lost between the airbag control module and seatbelt pretensioner module B, typically the passenger side. This network failure compromises the supplemental restraint system operation.
The most common cause of U017F (Lost Communication With Seatbelt Pretensioner Module "B") is: Damaged or corroded wiring harness to pretensioner module B
Typical repair costs for U017F range from $300 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Passenger side seatbelt pretensioner will not activate during collision. Airbag system effectiveness is compromised, increasing occupant injury risk.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U017F to identify the root cause.
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Quick Info
Category
Network
System
Restraint System / Safety
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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