P2C7A: 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 P2C7A 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

5 complaints filed with NHTSA mention P2C7A, 5 of them since 2015, across 2 different models. The component owners most often filed it under: engine.

Most-reported models

VehicleComplaintsModel years reported
GMC SIERRA 150042020, 2021

Manufacturer service bulletins that name P2C7A

8 technical service bulletins and manufacturer communications filed with NHTSA mention P2C7A, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • CHEVROLET SILVERADO 1500 (2023), bulletin 10245255: This technical bulletin provides repair information to correct a customer concern of Vehicles Setting DTCs P20EE, P22FE, P2C7A, P2EAD, P20FE, P2203, P22FB, P2459, P049D, P0300, and/or P1C30.
  • GMC SIERRA 1500 (2023), bulletin 10245255: This technical bulletin provides repair information to correct a customer concern of Vehicles Setting DTCs P20EE, P22FE, P2C7A, P2EAD, P20FE, P2203, P22FB, P2459, P049D, P0300, and/or P1C30.

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.