P0170: 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 P0170 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 P0170, 3 of them since 2015, across 5 different models. The component owners most often filed it under: engine.

Manufacturer service bulletins that name P0170

10 technical service bulletins and manufacturer communications filed with NHTSA mention P0170, from 1 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • FORD F-450 SD (2017, 2018, 2019), bulletin 10155552: Some 2017-2019 F-Super Duty vehicles equipped with a 6.7L engine built on or before 9-Jan-2019 may exhibit an illuminated malfunction indicator lamp (MIL) with DTCs P2074 and/or P0170. Follow the Service Procedure steps …
  • FORD F-350 SD (2017, 2018, 2019), bulletin 10159462: Some 2017-2019 F-Super Duty vehicles equipped with a 6.7L engine built on or before 9-Jan-2019 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P2074 and/or P0170. This may…
  • FORD F-250 SD (2017, 2018, 2019), bulletin 10168760: This message is superseding TSB 19-2271 to update the Issue, Action and Service Procedure. Some 2017-2018 F-Super Duty and 2019 F-Super Duty F-450/F-550 Chassis Cab only vehicles equipped with a 6.7L engine built on or b…
  • FORD F-650 SD (2016, 2017), bulletin 10137123: Some 2016-2017 F-650/F-750 vehicles equipped with a 6.7L diesel engine may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P012F, P0170, P218F, and/or a lack of performance at low speeds when heavily load…

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.