B002A
Right Curtain Deployment Control 2.
- Generic
- Body
- Generic code
- High severity
How this code is built
- B
- SystemBody
- 0
- Defined bySAE, the same on every car
- 0
- AreaBody area 0
- 2A
- FaultThe specific fault in that area
What it means
B002A is the generic code for a fault in the deployment control circuit 2 for the right curtain airbag. The restraints control module monitors the squib (igniter) circuit and set the code after seeing an abnormal resistance, open circuit, short or voltage on it. The exact circuit layout and what 'control 2' refers to (for example a second stage or second squib) depends on the make and model.
Symptoms
- Airbag (SRS) warning light on the dashboard
- Warning light stays on permanently after start-up, or flashes
- Right curtain airbag may not deploy in a crash
- Passenger airbag off indicator or other SRS messages may appear on some models
- Other SRS codes stored alongside it, such as for the left curtain or side impact circuits
Possible causes
- Damaged or corroded connector at the right curtain airbag or at the roof pillar wiring jointlikely
- Wiring fault (open circuit, chafing or short) in the right curtain airbag harness, often at door pillar or roof lining flex pointslikely
- Poor connection at the yellow SRS connector or connector locking clip (connector position assurance clip not fully seated), often after trim or seat workpossible
- Faulty right curtain airbag module or squib with out-of-range resistancepossible
- Previous collision damage or incorrect repair or fitting of the curtain airbag or its harnesspossible
- Faulty restraints control modulerare
How to diagnose
- Read all stored and pending SRS codes with a scan tool that supports airbag systems, and note any other codes that point to a shared circuit or power supply fault.
- Check freeze frame or status data if available, and see whether the code is current or history, and whether it returns after clearing.
- Check battery condition and charging voltage, as low voltage can cause SRS faults and mask the real problem.
- Visually inspect for signs of accident repair, water ingress, or trim and headlining disturbance along the right roof rail and pillars.
- With the battery disconnected and the waiting time observed as per the manufacturer's procedure, inspect the right curtain airbag connector and the SRS connectors under the seat and at the control module for damage, corrosion, bent pins or unseated locks.
- Check the harness for chafing or breaks along the pillar and roof rail, particularly at the door shut and flex points.
- Use the manufacturer's procedure and wiring diagram to test circuit resistance and insulation, and never apply a test lamp or direct power to airbag circuits.
- If wiring and connectors are good, follow the manufacturer's test for the curtain airbag module and restraints control module, as the method depends on the model.
How to fix
- Repair or replace damaged SRS connectors and terminals, and make sure the locking clips are fully engaged.
- Repair or replace the faulty section of the right curtain airbag harness following the manufacturer's repair guidelines (no ordinary wire splices on SRS circuits unless approved).
- Replace the right curtain airbag module if testing shows it is faulty or has been damaged, using the correct part for the vehicle.
- Correct any improper fitting or previous repair work and refit the trim as specified.
- Replace or reprogram the restraints control module only if confirmed faulty, as per the manufacturer's procedure, then clear the codes and confirm the SRS light stays off.
Can I keep driving?
High severity
The car can usually still be driven, but the right curtain airbag may not deploy in a crash, so limit driving and have it inspected promptly by a qualified technician. Don't carry passengers on the right side unnecessarily until it is repaired.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.