Body, generic

B0025 Left Side Deployment Stage 2 Control

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

No public J2012 code list contains B0025, and no manufacturer publicly describes a second stage of a left side airbag under this number. The only trace is at General Motors: the Saab 9-4X 2011 manual groups B0025 with the roof rail airbag codes B0016 and B0023 but gives no descriptor for it. Two-stage side airbags are rare in any case. A Ford patent notes that thorax, pelvis and head bags usually have a single inflation setting because of their small size, and the dual-chamber side airbag described by Autoliv divides one cushion into chest and pelvis zones rather than firing twice. If B0025 appears, the descriptor and module name on the scan tool decide what is meant. Airbag lamp on; the affected bag may not deploy.

Likely causes

Open, shorted or high-resistance squib loop of the airbag the module assigns to this code
Connector or its position lock not fully engaged
Fault or unsuitable software in the restraint control module

Symptoms

  • Airbag warning lamp on
  • Side or curtain protection may be reduced on the affected side
  • Safety note: do not probe the airbag circuit yourself; unplug airbag connectors only with the battery disconnected and the stated wait time observed

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€80–1,000
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

driver side airbagsrs control module

Related codes

B0020B0023B0026

References: saabwisonline.com, patents.google.com, autoliv.com.