{"vehicle":{"id":"2001_toyota_highlander","year":2001,"make":"Toyota","model":"Highlander"},"code":"P0174","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":4,"bulletins":[{"nhtsa_id":625923,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-12-11","date":"2001-02-02","document_id":"TMSNTC01016","mfr_campaign":null,"component":"UNKNOWN OR OTHER","summary":"SOME VEHICLES MAY ILLUMINATE THE CHECK ENGINE LIGHT AND SET DIAGNOSTIC TROUBLE CODES P1130, P1135, P1150, P1155, P1071 AND / OR P0174. *JB","document":null,"url":"https://open.wenmarpro.com/bulletins/625923"},{"nhtsa_id":620043,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-07-10","date":"2001-02-12","document_id":"TE0014","mfr_campaign":null,"component":"ELECTRICAL SYSTEM:IGNITION:MODULE","summary":"SUBJECT REGARDING ELECTRONIC CONTROL UNIT (ECU) REPROGRAMMING SUPPORT. CERTAIN 2001 FOUR CYLINDER VEHICLES, IF DRIVEN AT TEMPERATURES BELOW 30 DEGREES F, MAY DISPLAY A MALFUNCTION INDICATOR LAMP (MIL) AND STORE ONE OR MORE OF THE FOLLOWING DIAGNOSTIC TROUBLE CODES: P0171, P0174, P1130, P1133, P1150, OR P1155. IF THESE CODES ARE SET, AIR / FUEL RATIO SENSORS, BANK ONE, SENSOR ONE AND BANK TWO, SENSOR ONE ARE LIKELY DAMAGED AND BOTH SENSORS WILL NEED TO BE REPLACED. TO AVOID DAMAGING THE REPLACEMENT AIR / FUEL RATIO SENSORS DURING COLD WEATHER DRIVING THESE VEHICLES WILL NEED THEIR ECU REPROGRAMMED. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620043"},{"nhtsa_id":620042,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-07-10","date":"2001-07-10","document_id":"100701","mfr_campaign":null,"component":"UNKNOWN OR OTHER","summary":"TDN MAIL MESSAGE REGARDING REPORTS THAT SOME 4-CYLINDER VEHICLES MAY ILLUMINATE THE CHECK ENGINE LIGHT AND SET DIAGNOSTIC TROUBLE CODES (DTC) P1130, P1135, P1150, P1155, P0171 AND / OR P0174 WHEN OPERATED BELOW 30 DEGREES F. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620042"},{"nhtsa_id":616666,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-03-07","date":"2001-02-02","document_id":"TMSNTC01016","mfr_campaign":null,"component":"UNKNOWN OR OTHER","summary":"SOME 4-CYLINDER VEHICLES MAY ILLUMINATE THE CHECK ENGINE LIGHT AND SET DIAGNOSTIC TROUBLE CODES P1130, P1135, P1150, P1155, P0171 AND / OR P0174 WHEN OPERATED BELOW 30 DEGREES F. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/616666"}],"url":"https://open.wenmarpro.com/makes/toyota/highlander/2001/bulletins?code=P0174"},"related":{"components":[],"bulletins":[],"recalls":{"may_apply":true,"recalls":[],"lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null}}},"url":"https://open.wenmarpro.com/makes/toyota/highlander/2001/codes/P0174","note":"The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.","attribution":["Contains information licensed under the Open Government Licence – Canada."]}