What Does U0480 Mean?
The control module receiving data from Seatbelt Pretensioner Module B is detecting corrupted or out-of-range information on the vehicle's communication network. This indicates a communication problem between the passenger-side pretensioner module and other safety systems.
Safety Warning
Passenger-side seatbelt pretensioner may fail to deploy during a crash, compromising passenger safety. SRS warning light will illuminate and system may enter fail-safe mode.
Common Causes
35%
Faulty seatbelt pretensioner module B with internal circuit failure
30%
Damaged or corroded wiring harness and connectors between pretensioner module B and network bus
20%
Poor ground connection at pretensioner module B or airbag system ground point
10%
Software corruption or outdated firmware in pretensioner module B
5%
Collision-related damage causing module or wiring degradation
Diagnostic Steps
1
Step 1: Verify battery voltage and inspect power and ground connections to pretensioner module B
2
Step 2: Inspect pretensioner module B connector for physical damage, corrosion, or loose connection
3
Step 3: Test CAN High and CAN Low circuit continuity and resistance between module B and network junction points
4
Step 4: Compare live data from module B against module A to identify discrepancies in transmitted data
5
Step 5: Attempt software update/reprogramming; replace module B if communication remains invalid
Estimated Repair Cost
$300 - $1,200
Parts + labor, varies by vehicle and location
The control module receiving data from Seatbelt Pretensioner Module B is detecting corrupted or out-of-range information on the vehicle's communication network. This indicates a communication problem between the passenger-side pretensioner module and other safety systems.
The most common cause of U0480 (Invalid Data Received From Seatbelt Pretensioner Module "B") is: Faulty seatbelt pretensioner module B with internal circuit failure
Typical repair costs for U0480 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 may fail to deploy during a crash, compromising passenger safety. SRS warning light will illuminate and system may enter fail-safe mode.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0480 to identify the root cause.
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Quick Info
Category
Network
System
Supplemental Restraint System (SRS) / Airbag System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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