B0041: Third Row Left Frontal Stage 1 Deployment Control

What it means

The restraint control module monitors the stage 1 deployment circuit for the third-row left frontal airbag. It sets this code when it detects an electrical fault in that circuit, such as an open, short, or resistance outside its expected range.

At a glance

• Usually lights the airbag (SRS) or body-system warning light

How it works

The restraint control module monitors stage 1 of the third-row left frontal airbag's deployment circuit. B0041 sets when that specific stage 1 circuit has an electrical fault, such as an open, short, or resistance outside the expected range.

Common causes

Most likely first.

1. Open or high resistance in the stage 1 inflator circuit
2. Shorted or damaged wiring
3. Loose or corroded connector
4. Fault in the restraint control module

Symptoms

• Warning light or symbol related to the affected system
• Comfort or safety function impaired

How to diagnose it

1. Use an SRS-capable scan tool to read B0041's subfault details and freeze-frame or event data, noting whether the fault is current or intermittent.
2. With the vehicle powered down as directed by the manufacturer, inspect the third-row left frontal airbag's stage 1 wiring and connectors for damage, poor seating, corrosion, or prior repairs.
3. Use the manufacturer's wiring diagram to check the stage 1 circuit for an open or short with the prescribed SRS-safe method.
4. Check stage 1 circuit resistance and terminal contact against the manufacturer's procedure and specification; do not measure directly across an inflator unless the procedure explicitly allows it.
5. If the stage 1 wiring and connections pass, follow the diagnostic procedure to distinguish a faulty airbag module from a restraint control module fault.

Common fixes

• Repair damaged or chafed wiring in the third-row left frontal stage 1 circuit.
• Reseat or repair a loose or corroded stage 1 connector using the specified SRS procedure.
• Replace the airbag module if the stage 1 inflator circuit fails the manufacturer's test.
• Repair or replace the restraint control module if the stage 1 circuit and airbag module pass and module diagnosis confirms the fault.

Can I keep driving?

The third-row left frontal airbag's stage 1 may not deploy correctly, so have the SRS fault diagnosed promptly and avoid using that seating position until repaired. Do not probe airbag connectors or wiring outside the manufacturer's safety procedure.