Passenger Side Airbag Circuit Short
The B1996 code indicates a short circuit in the passenger side airbag module circuit. The Restraints Control Module (RCM) detects abnormally low resistance or a short to ground/voltage in the right side airbag initiator circuit. This prevents the passive safety system from deploying correctly during a side collision, posing a serious safety risk.
1. Commonly Affected Makes
2. Most Common Causes
- Faulty or damaged passenger side airbag module
- Short circuit in the airbag initiator wiring
- Corroded or loose electrical connections at the airbag connector
- Damaged Restraints Control Module (RCM)
- Faulty clock spring (if applicable to the side airbag circuit)
3. Symptoms You Will Notice
- Airbag warning light illuminated on the dashboard
- Supplemental Restraint System (SRS) fault message displayed
4. Step-by-Step Diagnosis
Scan the vehicle for all stored codes and freeze frame data.
Visually inspect the passenger side airbag wiring and connector for damage, corrosion, or loose pins.
Measure resistance across the airbag initiator circuit using a digital multimeter (refer to manufacturer specs).
If wiring is intact, test the airbag module itself for internal short (requires specialized tools).
Check the clock spring for continuity if the circuit passes through it.
If all else is normal, suspect a faulty RCM and perform further diagnostics per service manual.
5. Frequently Asked Questions
Is it safe to drive?▼
No, it is not safe. The passenger side airbag may not deploy in a collision, increasing injury risk. Have the vehicle towed to a repair shop.
How much does it cost to fix?▼
Repair costs typically range from $200 to $1,200, depending on the cause (wiring repair vs. airbag module replacement) and labor rates.