B1930: Safing Sensor Output Short to Ground
The B1930 code indicates a short to ground in the safing sensor output circuit of the airbag system (SRS). The safing sensor is a critical component that confirms a collision and allows the airbag control module to deploy the airbags. This code is set when the module detects abnormally low voltage (near 0 volts) on the output circuit, meaning the wiring is contacting chassis ground. Due to the nature of SRS systems, this fault requires professional diagnosis, as a short circuit can cause accidental deployment or prevent airbag operation in an emergency.
1. Commonly Affected Makes
2. Most Common Causes
- Safing sensor output circuit wiring shorted to ground
- Damaged safing sensor connector with bent or corroded pins
- Faulty safing sensor
- Damaged airbag control module (RCM)
- Wire insulation worn through from rubbing against chassis
3. Symptoms You Will Notice
- Airbag warning light illuminated on the dashboard
- Airbag system may be disabled or inoperative
4. Step-by-Step Diagnosis
Scan the SRS system for all stored codes and freeze frame data
Visually inspect the safing sensor wiring and connector for damage, corrosion, or shorts to ground
Test the safing sensor output circuit for continuity to ground using a multimeter
If wiring is intact, test the safing sensor per manufacturer specifications
If sensor and wiring are good, suspect a faulty airbag control module (RCM)
5. Frequently Asked Questions
Is it safe to drive?▼
No, it is not safe to drive. A short to ground in the safing sensor circuit can cause the airbags to deploy unexpectedly or fail to deploy in a crash, posing a serious safety risk. The vehicle should be towed to a professional repair shop.
How much does it cost to fix?▼
The cost to fix code B1930 typically ranges from $200 to $800, depending on the cause. A simple wiring repair may cost $200–$400, while replacing a safing sensor or airbag control module can cost $500–$800 or more, including labor.