{"vehicle":{"id":"2004_chevrolet_aveo","year":2004,"make":"Chevrolet","model":"Aveo"},"code":"P1781","generic":false,"description":null,"bulletins":{"as_of":"2026-10-19","count":4,"bulletins":[{"nhtsa_id":10017820,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-12-02","date":"2007-09-01","document_id":"050601030","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"1.6L L91 INTERMITTENT MISFIRE COLD DURING DECELERATION OR STEADY STATE HIGHWAY DRIVING AFTER COLD START WITH DTC'S P0300, P0700, P1781 AND/OR U0401 SET (REPLACE VALVES AND VALVE STEM SEALS) *TT UPDATED 11/02/07 *NJ","document":null,"url":"https://open.wenmarpro.com/bulletins/10017820"},{"nhtsa_id":10011589,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-01-27","date":null,"document_id":"3064","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"SERVICE ENGINE SOON LIGHT ENGINE MISFIRE AND P1781 DIAGNOSTIC TROUBLE CODE. *EH","document":null,"url":"https://open.wenmarpro.com/bulletins/10011589"},{"nhtsa_id":10009596,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-10-08","date":"2004-01-01","document_id":"3064","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","summary":"SERVICE ENGINE SOON LIGHT AND ROUGH RUNNING WITH DIAGNOSTIC TROUBLE CODES P0700, P1781 AND POSSIBLY A P0300. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10009596"},{"nhtsa_id":10005436,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-02-26","date":"2004-01-01","document_id":"01575","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","summary":"DIAGNOSTIC TROUBLE CODE (DTC) P1781 DIAGNOSTIC IS NOT IN SI YET. POOR FUEL ECONOMY AND/OR HARSH TRANSMISSION SHIFTS. SIT BULLETIN 1413084. *MN","document":null,"url":"https://open.wenmarpro.com/bulletins/10005436"}],"url":"https://open.wenmarpro.com/makes/chevrolet/aveo/2004/bulletins?code=P1781"},"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/chevrolet/aveo/2004/codes/P1781","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."]}