B0026: owner reports and bulletins

Body. We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got B0026 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

8 complaints filed with NHTSA mention B0026, 2 of them since 2015, across 8 different models. The component owners most often filed it under: air bags.

Manufacturer service bulletins that name B0026

8 technical service bulletins and manufacturer communications filed with NHTSA mention B0026, from 8 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • BUICK ENCLAVE (2008, 2009, 2010, 2011), bulletin 10137623: This technical bulletin provides a procedure to complete a terminal replacement or connector re connection to correct a condition of Diagnostic Information for Supplemental Inflatable Restraint (SIR) System, Intermittent…
  • CADILLAC CTS (2008, 2009, 2010, 2011), bulletin 10137623: This technical bulletin provides a procedure to complete a terminal replacement or connector re connection to correct a condition of Diagnostic Information for Supplemental Inflatable Restraint (SIR) System, Intermittent…
  • CHEVROLET AVALANCHE (2007, 2008, 2009, 2010), bulletin 10137623: This technical bulletin provides a procedure to complete a terminal replacement or connector re connection to correct a condition of Diagnostic Information for Supplemental Inflatable Restraint (SIR) System, Intermittent…
  • GMC ACADIA (2007, 2008, 2009, 2010), bulletin 10137623: This technical bulletin provides a procedure to complete a terminal replacement or connector re connection to correct a condition of Diagnostic Information for Supplemental Inflatable Restraint (SIR) System, Intermittent…
  • PONTIAC G5 (2007, 2008, 2009, 2005), bulletin 10137623: This technical bulletin provides a procedure to complete a terminal replacement or connector re connection to correct a condition of Diagnostic Information for Supplemental Inflatable Restraint (SIR) System, Intermittent…
  • HUMMER H2 (2008, 2009), bulletin 10137623: This technical bulletin provides a procedure to complete a terminal replacement or connector re connection to correct a condition of Diagnostic Information for Supplemental Inflatable Restraint (SIR) System, Intermittent…

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.