P219B: 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 P219B 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

24 complaints filed with NHTSA mention P219B, 24 of them since 2015, across 8 different models. The component owners most often filed it under: fuel/propulsion system.

Most-reported models

VehicleComplaintsModel years reported
HONDA PILOT162016, 2017, 2019, 2020

Manufacturer service bulletins that name P219B

48 technical service bulletins and manufacturer communications filed with NHTSA mention P219B, from 16 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • FORD EXPLORER (2023, 2024, 2025), bulletin 11007963: Some 2023-2025 Explorer/Aviator vehicles equipped with the 3.0L EcoBoost engine and up to 15,000 miles (24,140 km) may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P219A (Ban…
  • LINCOLN AVIATOR (2023, 2024), bulletin 11000182: Some 2023-2024 Explorer/Aviator vehicles equipped with the 3.0L EcoBoost engine and up to 15,000 miles (24,140 km) may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P219A (Ban…
  • CADILLAC ATS (2016, 2017, 2018, 2019), bulletin 10193444: This Preliminary information communicates diagnostic assistance for DTC's P219A and P219B.
  • CHEVROLET BLAZER (2019, 2020, 2021, 2016), bulletin 10193444: This Preliminary information communicates diagnostic assistance for DTC's P219A and P219B.
  • GMC ACADIA (2017, 2018, 2019, 2020), bulletin 10193444: This Preliminary information communicates diagnostic assistance for DTC's P219A and P219B.
  • RAM 1500 (2019, 2020, 2021), bulletin 10218469: Customer complaint may include the transmission going into neutral on its own. A Mil-on/check engine lamp-on condition may also be present. Upon further investigation, one or more of the following DTCs may be set in the …

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.