{"nhtsa_id":10173360,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-04-06","date":"2020-02-11","document_id":"21-009-20","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; AIR BAGS; TRAILER HITCHES; WHEELS; EXTERIOR LIGHTING; BACK OVER PREVENTION; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs: P1DDE-00 - Ignition Run-Start Input 1-2 Correlation(Sales Code DFR Only). P1DF3-00 - ECU Not Initialized(Sales Code DFR Only). P0733-00 - Gear 3 Shift Incorrect Ratio (while operating in 4-Lo range). P0716-00 - Input Shaft Speed Sensor 1 Performance. P0721-00 - Output Shaft Speed Sensor Circuit Performance. P1DB6-00 - Vehicle Speed Signal Performance. P1DAB-00 - Vehicle Speed Undetermined. P215C-00 - Output Shaft Speed Wheel Speed Correlation. P0607-00 - ECU Internal Performance. P1DAC-00-Engine Speed Undetermined. P07BF-00 - Input/Turbine Shaft Speed Sensor 1 Circuit Low. P07C0-00 - Input/Turbine Shaft Speed Sensor 1 Circuit High. P077C-00 - Output Shaft Speed Sensor Circuit Low. P077D-00 - Output Shaft Speed Sensor Circuit High. P177F-00 - Output Shaft Speed Sensor Out Of Range High. P1778-00 - Input-Turbine Shaft Speed Sensor A Out Of Range High. P0731-00 - Gear 1 Shift Incorrect Ratio. P0979-00 - Shift Solenoid 3 Control Circuit Low. P1DCD-00-TCM Monitoring Processor Performance Multiple Clutches Locked Up. In addition, the following software enhancements are also available:Auto-start Improvements. Low speed coast down bump improvements. Tip in bump improvements. Bump during tow/haul high throttle acceleration. Gear hunting during cruise resume. Gear hunting during uphill trailer tow. Cruise control under-speed during uphill trailer tow. Gear hunting during highway speed operation. Hang in gear when driver desires earlier upshift/lower engine speed operation. Coast-down downshift improvements for 6-5, 5-4 and 4-3. Coast-down downshift improvements for 2-1. Cold temperature downshift improvements for 6-5 and 4-3. Cold temperature upshift improvements for 1-2, 2-3, 3-4","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10173360-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10173360-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10173360","components":[{"id":"air-bags","name":"Air bags","parent":null},{"id":"driver-assistance","name":"Driver assistance","parent":null},{"id":"electrical","name":"Electrical system","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"trailer-hitch","name":"Trailer hitch","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"wheels","name":"Wheels","parent":null},{"id":"backup-camera","name":"Backup camera","parent":"driver-assistance"}],"codes":["P0607","P0716","P0721","P0731","P0733","P077C","P077D","P07BF","P07C0","P0979","P1778","P177F","P1DAB","P1DAC","P1DB6","P1DCD","P1DDE","P1DF3","P215C"],"topics":[],"vehicles":[{"make":"RAM","model":"1500","year_from":2019,"year_to":2019,"match":"exact","vehicle_ids":["2019_ram_1500"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}