What does it mean?
B2230 is a Body (airbags, seat belts, body electronics) fault code. It indicates: Driver-side Air Bag Module (Inflator No.2) Circuit Short To Power Supply .
Symptoms
- Air bag warning lamp on and the driver air bag deactivated.
- Horn sounds on its own, or horn and steering wheel controls stop working, pointing at the clockspring.
- The lamp may flicker while the steering wheel is turned.
- Second stage deployment is blocked in a serious frontal crash.
- The code sets immediately at key on and cannot be cleared permanently.
Likely causes
- Worn clockspring ribbon in the steering column touching a powered horn, cruise or heated wheel conductor.
- Chafed column harness shorting the squib wire against an ignition or battery feed.
- Aftermarket steering wheel, horn kit or accessory wiring spliced into the column loom.
- Corrosion or spilled liquid inside a column connector bridging the squib pin to a supply pin.
- Bent or pushed back terminal in the air bag module or clockspring connector.
- Internal fault in the driver air bag module shorting the second squib to a powered path.
- Restraint control module output stage failure.
How to fix it
- Disconnect the battery and wait the specified stand down time before opening the column or unplugging the air bag.
- Read all codes and note whether horn, cruise or steering wheel switch faults are stored together with this one.
- Remove the driver air bag module and check whether the code becomes an open circuit fault, which points the short at the module itself.
- With the module disconnected, measure the harness side squib wires for battery voltage, both key on and key off.
- If voltage is present, disconnect the clockspring and repeat the measurement to decide whether the fault is in the clockspring or further down the harness.
- Inspect and replace the clockspring if the ribbon is worn, burnt or contaminated, and remove any accessory wiring spliced into the column.
- Repair the harness with sealed crimps, reassemble in the correct order, then clear the codes and confirm a normal warning lamp self test.