{"nhtsa_id":10147331,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-11-13","date":"2018-09-18","document_id":"18199","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"18199 - Service Update - Software that controls the electric motor for the auxiliary transmission fluid pump has a fault in the logic used for restarting the pump. During a pump restart attempt, motor current over threshold can occur resulting in DTC P0C28 (Auxiliary Transmission Fluid Pump High Current). Additionally, DTC P0B07 (Auxiliary Transmission Fluid Pump Motor Phase W Low Current) was incorrectly calibrated off. A Phase W Low Current fault will result in a vehicle shutdown or no-start condition with no DTC stored and no MIL illuminated.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10147331-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10147331-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10147331","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":["P0B07","P0C28"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"CT6 PLUG-IN HYBRID","year_from":2017,"year_to":2018,"match":"base","vehicle_ids":["2017_cadillac_ct6","2018_cadillac_ct6"]}],"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":[]}