What it means
Fault on the deployment circuit of the second-row right-side airbag (built into the seat or door for rear-passenger side-impact protection).
At a glance
- Usually lights the airbag (SRS) or body-system warning light
How it works
The restraint control module monitors the deployment circuit for the second-row right side airbag, which is mounted in the seat or door depending on the vehicle. B0038 signals a fault in that specific circuit; scan-tool subfault information can identify the detected electrical condition.
Common causes
Most likely first.
- Open or high resistance in the second-row right side airbag inflator circuit
- Damaged wiring or connector at the seat or door
- 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 event data to confirm the second-row right side airbag circuit is affected and determine whether the fault is current.
- Inspect the right rear seat or door area, as fitted, for impact damage, moisture, disturbed trim, or wiring caught by seat movement.
- Disable the SRS by the vehicle procedure, then check accessible connectors and harness sections for looseness, corrosion, pinching, or damage.
- Use the manufacturer's approved SRS test equipment to check the circuit for an open, short, or resistance outside specification.
- If the wiring passes, test the side airbag module and restraint control module as directed, then clear and rescan.
Common fixes
- Reconnect a loose second-row right airbag connector or repair damaged wiring using the approved SRS procedure.
- Repair a confirmed open or short in the second-row right side deployment circuit.
- Replace the second-row right side airbag module if its circuit fails the specified test.
- Replace or program the restraint control module only after the circuit and airbag module checks pass.
Can I keep driving?
The second-row right side airbag may not provide its intended protection in a side impact. Have the SRS fault repaired promptly and avoid disturbing the affected seat or door trim.
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.