B0014 Passenger Frontal Stage 2 Deployment Control Circuit

The B0014 Diagnostic Trouble Code (DTC) indicates that the Supplemental Restraint System (SRS) has detected a malfunction in the Passenger Frontal Airbag Stage 2 Deployment Control Circuit. Stage 2 is activated during higher-severity collisions to provide additional airbag inflation for improved occupant protection.

Symptoms

• Airbag (SRS) warning light is illuminated.
• B0014 DTC stored in the SRS control module.
• Passenger frontal airbag Stage 2 may be disabled.
• Other SRS-related DTCs may also be stored.

Possible Causes

• Open circuit in the Stage 2 deployment wiring.
• Short to ground or battery voltage.
• Loose, damaged, or corroded connectors.
• Faulty passenger airbag Stage 2 inflator.
• Damaged wiring harness behind the dashboard.
• Faulty SRS (Airbag) control module.

Simple Circuit Diagram

          Battery
             │
             │
     SRS Control Module
             │
 Passenger Stage 2 Circuit
             │
      Wiring Harness
             │
 Passenger Airbag Stage 2
             │
          Ground

How to Diagnose

1. Read all SRS fault codes using a professional scan tool.
2. Inspect the passenger airbag connectors and wiring harness.
3. Check for damaged wires, corrosion, or loose terminals.
4. Verify circuit continuity using the manufacturer's wiring diagram.
5. Inspect the passenger airbag module if no wiring faults are found.
6. Repair the fault, erase the code, and confirm proper system operation.

Live Data Check

Most diagnostic scan tools do not provide live data for airbag deployment circuits. Use the SRS diagnostic menu to monitor the Passenger Airbag Stage 2 circuit status. Depending on the vehicle manufacturer, the circuit may display Normal, Open Circuit, Short Circuit, or Fault Active.

Common Repairs

• Repair damaged wiring.
• Replace loose or corroded connectors.
• Replace the passenger airbag module if defective.
• Repair the wiring harness.
• Replace or reprogram the SRS control module if necessary.

Important Safety Notice

Always disconnect the negative battery terminal and wait the manufacturer-recommended time before servicing any SRS component. Never test an airbag inflator with a standard multimeter because accidental deployment may occur.

Conclusion

DTC B0014 indicates a fault in the Passenger Frontal Airbag Stage 2 deployment control circuit. Prompt diagnosis and repair are essential to restore proper airbag function and ensure maximum passenger protection during a collision.