P2463: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P2463 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

3 complaints filed with NHTSA mention P2463, 3 of them since 2015, across 3 different models. The component owners most often filed it under: engine.

Manufacturer service bulletins that name P2463

153 technical service bulletins and manufacturer communications filed with NHTSA mention P2463, from 13 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • MACK MACK, bulletin 10204029: * Revised * How And When To Diagnose A US14 / US15 Emissions P2463 Diagnostic Trouble Code ( DTC )
  • VOLVO 780 (2016, 2015), bulletin 10203977: * Revised * How And When To Diagnose A US14 / US15 Emissions P2463 Diagnostic Trouble Code ( DTC )
  • CHEVROLET SILVERADO 3500 (2017, 2018, 2019, 2020), bulletin 11009430: This technical bulletin provides a procedure to correct the condition of Malfunction Indicator Lamp Illuminated with DTCs P2463 P2459 P11FB P11D3.
  • GMC SIERRA 3500 (2025), bulletin 11010483: This technical bulletin provides repair information to correct a customer concern of an MIL Illuminated in DIC (with DTCs P2463 and P04DB set).
  • CHEVROLET SILVERADO 6500 (2019, 2021, 2022, 2023), bulletin 10233833: This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set.
  • GMC YUKON XL (2021, 2022, 2023, 2007), bulletin 10233833: This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set.

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.