{"vehicle":{"id":"2021_ram_3500","year":2021,"make":"Ram","model":"3500"},"code":"P0731","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":4,"bulletins":[{"nhtsa_id":11032827,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-05-20","date":"2026-05-08","document_id":"21-039-26","mfr_campaign":null,"component":"POWER TRAIN","summary":"Replace K1 Clutch / Input Shaft Assembly Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P0731-00 - Gear 1 Shift Incorrect Ratio (This DTC will set during a key cycle and shifting into Drive). Customers must also comment on the following: ● The transmission will not shift into or out of 1st - 4th gears. 5th and reverse gears are still available This bulletin involves replacing the K1 clutch and possibly the K1 input shaft drum sub-assembly. These repairs are to be performed only if the vehicle is inoperable due to K1 clutch failure","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032827-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032827-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11032827"},{"nhtsa_id":11032650,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-05-13","date":"2026-05-08","document_id":"21-039-26","mfr_campaign":null,"component":"POWER TRAIN","summary":"Replace K1 Clutch / Input Shaft Assembly Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P0731-00 - Gear 1 Shift Incorrect Ratio (This DTC will set during a key cycle and shifting into Drive). Customers must also comment on the following: ● The transmission will not shift into or out of 1st - 4th gears. 5th and reverse gears are still available This bulletin involves replacing the K1 clutch and possibly the K1 input shaft drum sub-assembly. These repairs are to be performed only if the vehicle is inoperable due to K1 clutch failure","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032650-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032650-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11032650"},{"nhtsa_id":11008221,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-10-01","date":"2024-09-27","document_id":"21-051-24","mfr_campaign":null,"component":"POWER TRAIN","summary":"\"Replace K1 Clutch / Input Shaft Assembly Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P0731-00 - Gear 1 Shift Incorrect Ratio (This DTC will set during a key cycle and shifting into Drive). Customers may also comment on the following: ● The transmission will not shift into or out of 1st - 4th gears. 5th and reverse gears are still available. **This bulletin involves replacing the K1 clutch and possibly the K1 input shaft drum sub-assembly. These repairs are to be performed only if the vehicle is inoperable due to K1 clutch failure. ** \"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11008221-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11008221-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11008221"},{"nhtsa_id":10243266,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-10-02","date":"2023-08-19","document_id":"2100223","mfr_campaign":null,"component":"POWER TRAIN","summary":"K1 Clutch Snap Ring Repair Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) has been set: ? P0731-00 - Gear 1 Shift Incorrect Ratio (This DTC will set during a key cycle and shifting into Drive). Customers may also comment on the following: ? The transmission will not shift into/or out of 1st - 4th gears. 5th and reverse gears are still available. This bulletin involves replacing the K1 clutch drum snap ring and possibly the K1 input shaft drum subassembly.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10243266-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10243266-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10243266"}],"url":"https://open.wenmarpro.com/makes/ram/3500/2021/bulletins?code=P0731"},"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/ram/3500/2021/codes/P0731","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."]}