P0270: 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 P0270 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 P0270, 5 of them since 2015, across 3 different models. The component owners most often filed it under: power train.

Manufacturer service bulletins that name P0270

12 technical service bulletins and manufacturer communications filed with NHTSA mention P0270, from 5 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • CHEVROLET EQUINOX (2013, 2014, 2015), bulletin 10115068: This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicles that have intermittent hard start Service Engine Soon Malfunction Indicator Lamp or low oil pres…
  • GMC TERRAIN (2013, 2014, 2015), bulletin 10115068: This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicles that have intermittent hard start Service Engine Soon Malfunction Indicator Lamp or low oil pres…
  • CADILLAC CTS (2010, 2011, 2012, 2013), bulletin 10112007: This Preliminary Information communication provides information to the technician about vehicles that have Service Engine Soon Malfunction Indicator Lamp on and a misfire. Technician may find Diagnostic Trouble Codes P02…
  • CHEVROLET CAMARO (2010, 2011, 2012, 2013), bulletin 10112007: This Preliminary Information communication provides information to the technician about vehicles that have Service Engine Soon Malfunction Indicator Lamp on and a misfire. Technician may find Diagnostic Trouble Codes P02…
  • GMC ACADIA (2009, 2010, 2011, 2012), bulletin 10112007: This Preliminary Information communication provides information to the technician about vehicles that have Service Engine Soon Malfunction Indicator Lamp on and a misfire. Technician may find Diagnostic Trouble Codes P02…
  • BUICK ENCLAVE (2009, 2010, 2011, 2012), bulletin 10112007: This Preliminary Information communication provides information to the technician about vehicles that have Service Engine Soon Malfunction Indicator Lamp on and a misfire. Technician may find Diagnostic Trouble Codes P02…

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.