What Does U0471 Mean?
The airbag control module is receiving corrupted or implausible data from restraint system sensor A (typically a front impact sensor or side impact sensor). This indicates a communication problem between the sensor and the airbag control module over the vehicle's data network.
Safety Warning
Critical safety concern. Airbags may not deploy properly in a collision, or may deploy unexpectedly. Vehicle should not be driven until repaired.
Common Causes
35%
Faulty or damaged restraint system sensor A (accelerometer/impact sensor)
30%
Corroded, loose, or damaged wiring harness connections to sensor A
20%
Water intrusion or corrosion in sensor A 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 A and verify if readings are present and within normal range (typically -2g to +2g when stationary)
2
Step 2: Inspect sensor A location (usually front bumper area or B-pillar) for physical damage, water intrusion, or loose mounting
3
Step 3: Check connector at sensor A for corrosion, bent pins, or moisture; clean and apply dielectric grease if needed
4
Step 4: Perform voltage and continuity tests on sensor A power, ground, and signal wires per manufacturer specifications
5
Step 5: If wiring and connections are good, replace sensor A and clear codes; if code returns, test airbag control module
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 A (typically a front impact sensor or side impact sensor). This indicates a communication problem between the sensor and the airbag control module over the vehicle's data network.
The most common cause of U0471 (Invalid Data Received From "Restraints System Sensor A") is: Faulty or damaged restraint system sensor A (accelerometer/impact sensor)
Typical repair costs for U0471 range from $200 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Critical safety concern. Airbags may not deploy properly in a collision, or may deploy unexpectedly. Vehicle should not be driven until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0471 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
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.
