What is error code B0062?
Error code B0062 refers to “Left Roof Airbag Module Circuit Open.”
B0062 refers to the vehicle’s passive safety system, specifically the deployment circuit of the left-side airbag built into the roof (also known as the “curtain airbag”). This airbag is designed to protect the driver’s head from side impacts. The appearance of this code indicates a problem with the circuit of this airbag. Code B0062 indicates a break or malfunction in the circuit that controls the deployment of the airbag located on the left side of the roof. This could be due to damage to the wiring, connectors, or the airbag module itself.
Symptoms of Error Code B0062
- The airbag light on the dashboard is illuminated.
- The display shows the message: “Check airbag system.”
- There is no audible signal when the ignition is turned on.
- A diagnostic scanner displays code B0062.
Main Causes of Error Code B0062
- Damaged or broken wiring connecting the airbag module to the control unit.
- Corroded or oxidized connector contacts.
- Faulty airbag module itself.
- Faulty airbag system control unit (SRS).
Error Code B0062 in Common Vehicles
Chevrolet B0062: In Chevrolet vehicles, especially Silverado and Tahoe models, code B0062 is often associated with damage to the roof wiring or airbag connector.
GMC B0062: For GMC models like the Sierra and Yukon, this error may occur due to corroded contacts or damage to the airbag module.
Cadillac B0062: In Cadillac models, such as the Escalade, code B0062 may be caused by a faulty airbag control unit.
Buick B0062: In Buick models such as the Enclave, error B0062 is usually caused by a faulty airbag module or its wiring.
Opel B0062: In Opel models, especially the Astra and Insignia, this error may be due to an open or damaged airbag connector in the roof.
How to diagnose error code B0062?
- Connect the OBD2 diagnostic scanner to the OBD-II connector and read the error codes.
- Check the wiring and connectors of the left side roof airbag for damage or corrosion.
- Measure the resistance in the airbag deployment circuit using a multimeter. The normal value is usually between 2-3 ohms.
- If the wiring and connectors are intact, check the airbag module for internal damage.
- Reset the error code with the scanner and check if it reappears after ignition.
Possible Causes and Diagnostic Methods
| Possible Cause | How to Check? |
|---|---|
| Damaged wiring | Visually inspect for breaks or damage. |
| Corroded contacts | Check connectors for oxidation or rust. |
| Airbag module malfunction | Use specialized equipment for diagnosis. |
| SRS control unit malfunction | Scan the system for other errors and analyze control unit data. |
Tools needed: OBD2 scanner, multimeter, connector and wiring access kit, contact cleaner
How to fix error code B0062? (Solution to the problem)
Simple Repair Methods
- Clean the connectors and contacts to prevent corrosion.
- Replace damaged wires or connectors.
- Reset the error code after the problem is resolved.
In-depth Diagnostic and Repair Solutions
- Replace the airbag module if it is faulty.
- Check the airbag system control unit (SRS) and replace if necessary.
- Perform a comprehensive diagnosis of the passive safety system in a professional service.
Troubleshooting by Symptoms
| Symptom | Possible Solution |
|---|---|
| Airbag light is on | Check and clean connectors, reset error code. |
| Code reappears after reset | In-depth system diagnosis, possible component replacement. |
| No audible signal when ignition is started | Verify the SRS control unit and its components. |
B0062 Frequently Asked Questions
Can you drive with error code B0062?
No, because the error involves the airbag system, and the protection may not work properly in the event of an accident.
Could the B0062 error be caused by normal contact oxidation?
Yes, even slight oxidation of the connector can disrupt the circuit and cause this fault code to appear.
How to reset error code B0062 without fixing it?
You can try disconnecting the battery for 10-15 minutes, or using an OBD2 scanner, but if the fault persists, the error will reappear.
Do I need to replace the entire airbag module to fix error B0062?
Not necessarily. Sometimes it only requires replacing a wire or cleaning corrosion from a connector. The decision depends on the diagnosis.
Can I diagnose error B0062 myself?
Yes, if you have an OBD2 scanner and a basic understanding of electrical circuits, but for accurate results, it’s best to contact a specialist.
B0062 Related OBD2 Errors
B0063 – High resistance in the left roof airbag module circuit
B0064 – Low resistance in the left roof airbag module circuit
B0065 – Left seatbelt pretensioner circuit open
Important! Even if the airbag did not deploy in an accident, the system may not warn you in advance. If this fault code appears, it is recommended to immediately contact a professional service for diagnosis and repair to ensure vehicle safety.