{"vehicle":{"id":"2018_chevrolet_equinox","year":2018,"make":"Chevrolet","model":"Equinox"},"code":"P0421","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":4,"bulletins":[{"nhtsa_id":10154582,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-03-18","date":"2018-12-13","document_id":"PIP5615","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"This Preliminary information communicates that a Engine Control Module (ECM) service update calibration for P0421.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10154582-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10154582-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10154582"},{"nhtsa_id":10154292,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-03-11","date":"2019-02-11","document_id":"PIP5615A","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"This Preliminary information communicates that a Engine Control Module (ECM) service update calibration for P034A, P0421, P050F, P059F, P111E, P11DC, P122D, P1488, P220B, P22FE, P2457, P2463, P2BAA.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10154292-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10154292-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10154292"},{"nhtsa_id":10143742,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-08-20","date":"2018-06-19","document_id":"18209","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; ENGINE","summary":"18209 - Service Update. Certain vehicles equipped with a 1.6L diesel engine (RPO LH7), may have been built with an improper alignment of the clamp/gasket assembly connecting the turbocharger to the catalytic converter. This condition may cause a diesel exhaust leak and/or smoke from the underhood area of the vehicle. In addition, a check engine indicator may set with diagnostic trouble code P0421. Dealers are to inspect and replace the turbocharger to catalytic converter clamp/gasket as necessary.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10143742-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10143742-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10143742"},{"nhtsa_id":10137585,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-05-21","date":"2018-04-18","document_id":"18NA120","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","summary":"This technical bulletin provides a procedure to reposition the exhaust clamp to correct a condition of Exhaust Smell in Cabin and/or DTC P0421 Set due to a miss installed clamp.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10137585-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10137585-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10137585"}],"url":"https://open.wenmarpro.com/makes/chevrolet/equinox/2018/bulletins?code=P0421"},"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/equinox/2018/codes/P0421","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."]}