What Does B009F Mean?
This code indicates a subfault or internal malfunction within the sixth restraint sensor located on the right side of the vehicle. The Restraint Control Module (RCM) or Airbag Control Module (ACM) has detected an abnormal signal, circuit fault, or internal component failure in this specific sensor. This sensor is part of the supplemental restraint system (SRS) that monitors crash forces to determine airbag deployment timing and severity.
Safety Warning
This is a critical safety issue as the airbag system may not function properly in a collision, potentially leaving occupants unprotected. The airbag warning light will remain illuminated, and some or all airbags may be disabled. Repair immediately and avoid driving except to transport vehicle directly to a repair facility.
Common Causes
45%
Faulty or damaged right side restraints sensor 6 (side impact sensor, pressure sensor, or accelerometer)
30%
Damaged, corroded, or loose wiring harness connections to sensor 6
15%
Water intrusion or corrosion at sensor mounting location causing sensor malfunction
10%
Restraint Control Module (RCM) internal fault or software corruption
Diagnostic Steps
1
Step 1: Visually inspect the right side restraint sensor 6 location (typically B-pillar, C-pillar, or right rocker panel area depending on vehicle) for physical damage, loose mounting, or signs of water intrusion. Check sensor connector for corrosion, pin damage, or loose connections.
2
Step 2: Using a digital multimeter, check sensor supply voltage (typically 5V reference) and ground circuit integrity at the sensor connector with ignition on. Verify resistance values of sensor circuits against manufacturer specifications (typically 500-2000 ohms for accelerometer-type sensors).
3
Step 3: Perform a wiggle test on the sensor wiring harness while monitoring live data for signal dropouts or intermittent faults. Inspect wiring routing for pinch points, chafing, or damage from previous collision repair work.
4
Step 4: If wiring and connections test good, replace the right side restraint sensor 6 with a known-good or OEM replacement unit. Ensure proper torque specifications and mounting orientation as sensors are direction-sensitive.
5
Step 5: Clear all SRS codes, perform a complete SRS system test using the scan tool, and verify the subfault does not return. Test drive vehicle over varied road conditions to confirm repair and verify airbag warning light remains off.
Estimated Repair Cost
$200 - $800
Parts + labor, varies by vehicle and location
This code indicates a subfault or internal malfunction within the sixth restraint sensor located on the right side of the vehicle. The Restraint Control Module (RCM) or Airbag Control Module (ACM) has detected an abnormal signal, circuit fault, or internal component failure in this specific sensor. ...
The most common cause of B009F (Right Side Restraints Sensor 6 (Subfault)) is: Faulty or damaged right side restraints sensor 6 (side impact sensor, pressure sensor, or accelerometer)
Typical repair costs for B009F range from $200 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This is a critical safety issue as the airbag system may not function properly in a collision, potentially leaving occupants unprotected. The airbag warning light will remain illuminated, and some or all airbags may be disabled. Repair immediately and avoid driving except to transport vehicle directly to a repair facility.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B009F to identify the root cause.
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Quick Info
Category
Body
System
Supplemental Restraint System (SRS/Airbag)
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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