{"vehicle":{"id":"2023_ram_1500","year":2023,"make":"Ram","model":"1500"},"code":"C1477","generic":false,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":11007201,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-09-06","date":"2024-09-06","document_id":"9100409","mfr_campaign":null,"component":"POWER TRAIN","summary":"TRANSFER CASE Before replacing a transfer case unit for fault codes C1444-98 and/or C1477-4B, be sure to reference TSB 21-048-24 for potential transfer case shift motor replacement","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11007201-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11007201-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11007201"},{"nhtsa_id":11006985,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-09-04","date":"2024-08-30","document_id":"21-048-24","mfr_campaign":null,"component":"POWER TRAIN","summary":"\"Transfer Case Active Shift Motor Replacement Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● C1444-98 - T-Case Motor Overuse-Component Or System Over Temperature. ● C1477-4B - Transfer Case Clutch-Over Temperature. Customers may also comment on the following: ● \"\"4WD Overheated Temporarily Unavailable\"\" message displayed in the Instrument Panel Cluster (IPC). This bulletin involves replacing the transfer case shift motor.\"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11006985-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11006985-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11006985"},{"nhtsa_id":10248920,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-01-16","date":"2023-11-02","document_id":"0823723","mfr_campaign":null,"component":"WHEELS; AIR BAGS; BACK OVER PREVENTION; ENGINE AND ENGINE COOLING; STRUCTURE; ELECTRICAL SYSTEM; EXTERIOR LIGHTING","summary":"Transfer Case Shift Motor Wire Harness Connector Not Secured Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? U0418-00 - Implausible Data Received From Brake System Control Module. ? C1444-98 - T-Case Motor Overuse-Component or System Over Temperature. ? C00A8-13 - 4WD/AWD Transfer Case Unit Actuator Position Sensor B-Circuit Open. ? C00A7-13 - 4WD/AWD Transfer Case Unit Actuator Position Sensor A-Circuit Open. ? C149E-64 - Transfer Case Motor Position Sensor-Signal Plausibility Failure. ? C1423-64 - Transfer Case Internal Performance-Signal Plausibility Failure. ? C1406-13 - Transfer Case Brake Control-Circuit Open. ? C1477-4B - Transfer Case Clutch-Over Temperature. ? C140A-13 - Transfer Case Motor Control-Circuit Open. ? U041E-00 - Invalid Data Received From All Wheel Drive Control Module. ? U0422-00 - Implausible Data Received From Body Control Module. ? U0418-00 - Implausible Data Received From Brake System Control Module 1. ? U041E-00 - Invalid Data Received Form All Wheel Drive Control Module. ? U0403-00 - Implausible Data Received From T-Case. The customer may also comment on the following: ? 4WD Service light displayed in the Instrument Panel Cluster (IPC). This bulletin involves performing a push?pull?push test on the transfer case shift motor wire harness connector.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248920-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248920-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10248920"}],"url":"https://open.wenmarpro.com/makes/ram/1500/2023/bulletins?code=C1477"},"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/1500/2023/codes/C1477","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."]}