P0418: 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 P0418 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

16 complaints filed with NHTSA mention P0418, 14 of them since 2015, across 6 different models. The component owners most often filed it under: engine.

Most-reported models

VehicleComplaintsModel years reported
TOYOTA TUNDRA102007, 2008, 2011, 2012, 2013

Manufacturer service bulletins that name P0418

6 technical service bulletins and manufacturer communications filed with NHTSA mention P0418, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • LEXUS GX460 (2010, 2011, 2012, 2013), bulletin 10131780: TSB: REVISION NOTICE February 16, 2016 Rev2: ? The Parts Information and Repair Procedure sections have been updated. Some 2010 ? 2013 model year GX 460 vehicles equipped with 1UR-FE engines may exhibit a MIL ?ON? condit…
  • TOYOTA SEQUOIA (2012, 2013), bulletin 10133831: Some 2012-2013 model year Sequoia and Tundra vehicles equipped with 3UR-FBE engines may exhibit a MIL"ON" condition with DTC P0418 and/or P2445 present. The ECM logic has been modified to reduce the possibility of this c…
  • TOYOTA 4RUNNER (2005, 2006, 2007, 2008), bulletin 10132097: Some 2005 ? 2009 model year 4Runner, 2006 ? 2007 model year Land Cruiser, 2005 ? 2007 model year Sequoia, and 2005 ? 2006 model year Tundra vehicles equipped with the 2UZ-FE (4.7 L) engine may exhibit a MIL ?ON? conditio…

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.