P00FF: 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 P00FF 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

6 complaints filed with NHTSA mention P00FF, 6 of them since 2015, across 5 different models. The component owners most often filed it under: engine.

Manufacturer service bulletins that name P00FF

5 technical service bulletins and manufacturer communications filed with NHTSA mention P00FF, from 3 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • CADILLAC ESCALADE (2025), bulletin 11011196: This Preliminary information communicates an issue with an SES MIL and BCM DTC U1962 and ECM P00FF set. Dealers are to perform a clear DTC's and if necessary, perform a Serial Data Authentication Configuration procedure …
  • CHEVROLET SUBURBAN 1500 (2025), bulletin 11011196: This Preliminary information communicates an issue with an SES MIL and BCM DTC U1962 and ECM P00FF set. Dealers are to perform a clear DTC's and if necessary, perform a Serial Data Authentication Configuration procedure …
  • GMC YUKON (2025), bulletin 11011196: This Preliminary information communicates an issue with an SES MIL and BCM DTC U1962 and ECM P00FF set. Dealers are to perform a clear DTC's and if necessary, perform a Serial Data Authentication Configuration procedure …
  • CADILLAC CT5 (2020), bulletin 10171313: This preliminary information communicates a condition may exitcausing DTC's P00FF, B2B05, B2B06 to set. Engineering is working on a solution.

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.