What Does U0472 Mean?
The airbag control module is receiving corrupted or implausible data from restraint system sensor B (typically a second front impact sensor or side impact sensor). This indicates a communication problem between sensor B and the airbag control module.
Safety Warning
Critical safety concern. Airbag deployment may be compromised in a collision. Do not drive vehicle until this issue is resolved by a qualified technician.
Common Causes
35%
Faulty or damaged restraint system sensor B (accelerometer/impact sensor)
30%
Corroded, loose, or damaged wiring harness connections to sensor B
20%
Water intrusion or corrosion in sensor B connector
10%
Failed airbag control module misinterpreting sensor data
5%
CAN bus communication fault or network interference
Diagnostic Steps
1
Step 1: Use scan tool to monitor live data from restraint sensor B and verify if readings are present and within normal range
2
Step 2: Locate sensor B (commonly passenger-side front or opposite side from sensor A) and inspect for physical damage or water damage
3
Step 3: Check connector at sensor B for corrosion, damaged pins, or poor connection; clean and secure connections
4
Step 4: Test sensor B circuit for proper voltage supply, ground integrity, and signal wire continuity
5
Step 5: Replace sensor B if faulty; verify repair by clearing codes and performing a road test with scan tool monitoring
Estimated Repair Cost
$200 - $800
Parts + labor, varies by vehicle and location
The airbag control module is receiving corrupted or implausible data from restraint system sensor B (typically a second front impact sensor or side impact sensor). This indicates a communication problem between sensor B and the airbag control module.
The most common cause of U0472 (Invalid Data Received From "Restraints System Sensor B") is: Faulty or damaged restraint system sensor B (accelerometer/impact sensor)
Typical repair costs for U0472 range from $200 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Critical safety concern. Airbag deployment may be compromised in a collision. Do not drive vehicle until this issue is resolved by a qualified technician.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0472 to identify the root cause.
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Quick Info
Category
Network
System
Supplemental Restraint System (SRS/Airbag)
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
