B0015 Passenger Frontal Stage 2 Deployment Control Circuit High

The B0015 Diagnostic Trouble Code (DTC) indicates that the Supplemental Restraint System (SRS) has detected a high voltage or high resistance condition in the Passenger Frontal Airbag Stage 2 deployment control circuit. This fault may disable the second-stage deployment of the passenger airbag, reducing occupant protection during a severe frontal collision.

Symptoms

• Airbag (SRS) warning light is illuminated.
• B0015 DTC stored in the SRS control module.
• Passenger frontal airbag Stage 2 may be disabled.
• Additional SRS-related trouble codes may also be present.

Possible Causes

• Open circuit in the Stage 2 deployment wiring.
• High resistance caused by loose or corroded connectors.
• Poor terminal contact inside the connector.
• Damaged wiring harness.
• Faulty passenger airbag Stage 2 inflator.
• 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 trouble codes using a professional scan tool.
2. Inspect the passenger airbag connectors for corrosion or loose terminals.
3. Check the wiring harness for open circuits or damaged wires.
4. Verify circuit continuity according to the manufacturer's wiring diagram.
5. Inspect the passenger airbag Stage 2 module if the wiring is normal.
6. Repair the fault, clear the DTC, and verify that it does not return.

Live Data Check

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

Common Repairs

• Repair damaged wiring.
• Clean or replace corroded connectors.
• Repair poor terminal contact.
• Replace the passenger airbag Stage 2 module if defective.
• Replace or reprogram the SRS control module if required.

Important Safety Notice

Always disconnect the negative battery terminal and wait the manufacturer-specified time before working on any SRS component. Never measure the resistance of an airbag inflator using a standard multimeter because accidental deployment may occur.

Conclusion

DTC B0015 indicates a high-resistance or high-voltage fault in the Passenger Frontal Airbag Stage 2 deployment control circuit. Correct diagnosis and repair are essential to restore proper airbag operation and maintain vehicle safety.