B0020Left Side Airbag Deployment Control
- Generic OBD-II code · Body
- How the car detects it
- B0020 covers the firing loop of the left front side airbag, the thorax bag usually built into the outer flank of the driver seat backrest. Toyota names B002011 and B002012 as short to ground and short to battery on the 2022 Tundra, where the wireless phone charger caused false entries that new SRS software cures (TSB005722). FCA reads B0020-13 as an open left seat squib on the 2014-17 Cherokee and the 2015-17 Chrysler 200 and fits new jumper harnesses in the seats (10-001-20). Honda collected parts from Accord, CR-V and TLX with the same byte 13, and Mitsubishi confirms each fault after 2 seconds. GM modules of about 2007-14 used B0020 for passenger frontal stage 2 instead, so check which bag the scan tool names. The airbag lamp is on.
- What you may notice
- Airbag warning lamp on
- Left front side airbag may not deploy in a side impact
- Safety note: do not probe the airbag circuit yourself; unplug airbag connectors only with the battery disconnected and the stated wait time observed
- Likely causes
- LikelyPoor contact or corrosion at the side airbag connector or jumper harness under or in the seat
- PossibleInternal fault in the left seat side airbag module
- PossiblePinched or chafed side airbag lead in the seat frame
- RareRestraint module software reacting to interference, e.g. Toyota Tundra 2022 with wireless charger
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.