B1922: Safing Sensor Short to Battery
The B1922 code indicates a short to battery voltage in the safing sensor output circuit of the airbag system (SRS). The safing sensor is a critical component that confirms an impact before allowing the airbag control module to deploy the airbags. This manufacturer-specific code is triggered when the SRS control module detects an unexpectedly high voltage on the safing sensor output circuit, compromising deployment signal integrity. It is commonly associated with Ford Motor Company vehicles.
1. Commonly Affected Makes
2. Most Common Causes
- Short to voltage in the safing sensor wiring harness
- Wiring damaged by friction or heat near the sensor or SRS module
- Faulty safing sensor with internal short circuit
- Damaged airbag control module (RCM/SRS)
- Corroded or moisture-contaminated electrical connections in the sensor circuit
3. Symptoms You Will Notice
- Airbag warning light illuminated on the dashboard
- SRS system may be disabled, preventing airbag deployment in a crash
4. Step-by-Step Diagnosis
Scan the SRS module for codes and verify B1922 is present
Visually inspect the safing sensor wiring and connectors for damage, corrosion, or shorts
Test the safing sensor circuit for voltage with a multimeter; compare to manufacturer specifications
Check for continuity and shorts to ground or battery in the wiring harness
If wiring is intact, test the safing sensor itself; replace if faulty
If sensor and wiring are good, suspect a failed SRS module and perform further diagnostics
5. Frequently Asked Questions
Is it safe to drive?▼
No, it is not safe to drive. The B1922 code indicates a critical fault in the airbag system that could prevent deployment in a crash, increasing the risk of injury.
How much does it cost to fix?▼
Repair costs typically range from $200 to $800, depending on whether the issue is a wiring repair, sensor replacement, or SRS module replacement.