What it means
Fault on the second deployment circuit of the right side curtain airbag. Curtain airbags deploy along the side glass to protect head and neck in a side or rollover crash.
At a glance
- Usually lights the airbag (SRS) or body-system warning light
How it works
The restraint control module monitors deployment circuit 2 for the right curtain airbag, which protects occupants beside the right-side glass. B002A indicates an electrical fault in that specific circuit, such as excessive resistance or an open; the scan-tool subfault detail can narrow the condition.
Common causes
Most likely first.
- Open or high resistance in the right curtain airbag inflator circuit
- Damaged wiring or connector along the roof or pillar
- Loose or corroded connector
- 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
- Read the SRS subfault and freeze-frame data to confirm the fault is for right curtain circuit 2 and note whether it is current or intermittent.
- Inspect accessible roof-rail and pillar wiring and connectors on the right side for pinching, corrosion, looseness, or damage from trim work.
- Follow the vehicle's SRS disabling procedure before handling connectors, then check the circuit connections without probing the inflator terminals directly.
- Use the manufacturer's approved SRS test method to check circuit 2 for an open, high resistance, or short and compare results with specification.
- If the wiring passes, check the right curtain module and restraint control module using the specified diagnostic procedure, then clear and rescan the code.
Common fixes
- Reconnect or repair a loose or damaged right roof-rail or pillar harness connection using the approved SRS procedure.
- Repair an open or high-resistance section of right curtain circuit 2 according to the manufacturer's wiring repair instructions.
- Replace the right curtain airbag module if its circuit is confirmed faulty.
- Repair or replace the restraint control module only after circuit and inflator checks pass.
Can I keep driving?
The right curtain airbag may not deploy correctly, reducing head protection in a side impact or rollover. Arrange prompt repair and drive cautiously; this SRS fault does not itself mean the vehicle's engine is unsafe to run.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.