P26CB: 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 P26CB 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

11 complaints filed with NHTSA mention P26CB, 11 of them since 2015, across 4 different models. The component owners most often filed it under: engine.

Most-reported models

VehicleComplaintsModel years reported
TOYOTA CAMRY62018, 2019
TOYOTA RAV432019

Manufacturer service bulletins that name P26CB

2 technical service bulletins and manufacturer communications filed with NHTSA mention P26CB, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • LAND ROVER DISCOVERY (2019, 2020), bulletin 10173508: A loud noise can be heard coming from the engine compartment. Investigation has found that the engine cooling fan is constantly running at high speed and the following Diagnostic Trouble Codes (DTCs) may be stored in the…
  • JAGUAR E-PACE (2019, 2020, 2018), bulletin 10173508: A loud noise can be heard coming from the engine compartment. Investigation has found that the engine cooling fan is constantly running at high speed and the following Diagnostic Trouble Codes (DTCs) may be stored 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.