{"vehicle":{"id":"2015_ram_1500","year":2015,"make":"Ram","model":"1500"},"code":"P0734","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":10150543,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-12-10","date":"2015-04-18","document_id":"21-025-15","mfr_campaign":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM","summary":"Flash: 854RE Transmission Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customer may experience one or more of the following. ? Malfunction Indicator Lamp (MIL) illumination with Diagnostic Trouble Code (DTC) P0734 - Gear 4 Shift Incorrect Ratio set in the TCM memory. ? Bump sensation felt during engine start/stop transition on light throttle acceleration (Engine Stop Start (ESS) equipped vehicles only). ? Less than desired overall downshifts during normal driving. ? Less than desired downshifts during passing maneuvers. ? Less than desired upshift quality in lower gears.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10150543-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10150543-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10150543"},{"nhtsa_id":10148955,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-11-26","date":"2015-08-05","document_id":"21-025-15 REV-A","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","summary":"Flash: 854RE Transmission Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience one or more of the following Symptom/Condition(s) and/or a Malfunction Indicator Lamp (MIL) due to an erroneous Diagnostic Trouble Code (DTC): ? P1DCD - TCM monitoring processor performance multiple clutches locked up. ? P1B13 - Park-By-Wire unintended out of park position. ? P0734 - Gear 4 Shift Incorrect Ratio set in the TCM memory. ? Bump sensation felt during engine start/stop transition on light throttle acceleration (Engine Stop Start (ESS) equipped vehicles only). ? Less than desired overall downshifts during normal driving. ? Less than desired downshifts during passing maneuvers. ? Less than desired upshift quality in lower gears.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10148955-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10148955-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10148955"},{"nhtsa_id":10121879,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-11-03","date":"2016-11-19","document_id":"21-036-16","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","summary":"Flash: 845RE Transmission Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience one or more of the following Symptom/Condition(s) and/or a Malfunction Indicator Lamp (MIL) due to an erroneous Diagnostic Trouble Code (DTC): P1DCD - TCM monitoring processor performance multiple clutches locked up. P1B13 - Park-By-Wire unintended out of park position. P0734 - Gear 4 Shift Incorrect Ratio set in the TCM memory.In addition, customers may experience the following conditions: Bump sensation felt during engine start/stop transition on light throttle acceleration (Stop-Start Multiple VSM System Sales Code XBU equipped vehicles only). Less than desired overall downshifts during normal driving. Less than desired downshifts during passing maneuvers. Less than desired upshift quality in lower gears.The following improvements are included in this update: Engine start/stop calibration update to allow Park and Neutral to be considered valid stop positions (Stop-Start Multiple VSM System Sales Code XBU equipped vehicles only).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10121879-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10121879-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10121879"}],"url":"https://open.wenmarpro.com/makes/ram/1500/2015/bulletins?code=P0734"},"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/1500/2015/codes/P0734","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."]}