P2197: 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 P2197 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

2 complaints filed with NHTSA mention P2197, 2 of them since 2015, across 1 different models. The component owners most often filed it under: service brakes.

Manufacturer service bulletins that name P2197

6 technical service bulletins and manufacturer communications filed with NHTSA mention P2197, from 3 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • FORD TRANSIT (2015, 2016, 2017, 2018), bulletin 10148711: Some 2015-2018 Transit vehicles built on or before 24-Jul-2018 may exhibit various drivability concerns including difficulty starting, misfires and/or an illuminated MIL with diagnostic trouble codes (DTCs) P00BD, P1247,…
  • FORD F-150 (2015, 2016, 2017), bulletin 10115945: Some 2015-2017 Explorer and 2015-2016 F-150 vehicles, equipped with 3.5L Gasoline Turbocharged Direct Injection (GTDI) engines may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P2195, P2197, P2626, and/…
  • LAND ROVER RANGE ROVER (2016), bulletin 10105881: "ISSUE: THE CUSTOMER MAY OBSERVE A MIL IN THE INSTRUMENT CLUSTER RELATING TO THE ENGINE SYSTEM (CHECK ENGINE LIGHT) AND ONE OR MORE CODES STORED IN THE PCM RELATING TO HEATED OXYGEN SENSOR (HO2S) IN THE EXHAUST SYSTEM. T…
  • TOYOTA VENZA (2009, 2010, 2007, 2008), bulletin 10132202: Some vehicles may exhibit a MIL ?ON? Diagnostic Trouble Code (DTC) P0138 and/or P0158 (Oxygen Sensor Circuit High Voltage Bank 1 or 2). In some instances a P2195 or P2197 (A/F Sensor Signal Stuck Lean) DTC may also be pr…

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.