B0067 Airbag Diagnostic Trouble Code (DTC)
The B0067 Diagnostic Trouble Code (DTC) indicates that the Supplemental Restraint System (SRS) has detected a fault in an airbag deployment circuit, crash sensor, or related communication circuit. The exact definition varies by vehicle manufacturer, but the diagnostic procedure is generally similar across most vehicles.
Symptoms
Possible Causes
- Defective crash (impact) sensor.
- Damaged side airbag circuit.
- Open or short in the SRS wiring harness.
- Loose or corroded connector.
- Clock spring failure.
- Faulty Airbag Control Module (ACM / RCM / SDM / ORC).
Typical SRS Signal Flow
Crash Sensor
│
▼
SRS Wiring Harness
│
▼
Airbag Control Module
│
▼
Airbag Warning Indicator
Live Data Inspection
| Live Data Item | Typical Value |
|---|---|
| Crash Sensor Status | OK / Active |
| Communication Status | Normal |
| Battery Voltage | 11.5–14.8 V |
| Crash Event | Inactive |
| Airbag Lamp | OFF (Normal) |
Diagnostic Procedure
- Read all stored SRS DTCs.
- Enter the Live Data screen.
- Verify crash sensor communication.
- Inspect connectors for corrosion or loose terminals.
- Check battery voltage and module power supply.
- Perform wiring continuity tests if Live Data is missing.
- Repair the fault, erase the code, and verify normal operation.
Related DTCs
Frequently Asked Questions
Can B0067 be caused by a poor connector?
Yes. Loose, damaged, or corroded connectors are a common cause of SRS faults.
Can Live Data identify the failed sensor?
In many vehicles, Live Data can show whether the crash sensor is communicating correctly or reporting a fault.
Should the Airbag Control Module be replaced first?
No. Always inspect wiring, connectors, voltage supply, and sensors before replacing the control module.
Note: Live Data values, circuit diagrams, connector pinouts, and sensor parameters vary by manufacturer. The values shown above are typical examples and should be verified using the factory service information for the specific vehicle.