P0740 on Ram vehicles A fault in the torque converter clutch circuit

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Owners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.

Bulletins and campaigns Ram filed with NHTSA whose summary names P0740. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• 9004206 Service bulletin
  2020-05-20 · Engine
• Remanufactured Transmission Assembly 1. All Promaster (VF) 3.6L/62TE equipped vehicles: a) If the transmission bracket to the transmission case fasteners are removed during servicing, the fasteners (Part Number 06511385A$) must be replaced as they are one-time usage. b) Vehicles built prior to 10/23/2015 requires Service Kit PN 68461214AA; includes Transmission Isolator PN 68264483AA, and Adapt
• 9003453 Service bulletin
  2020-08-19 · Suspension
• Transmission,Trans Oil Pump,Torque Converter, Flexplate, Rear Seal, Engine NOTE: FOR ALL PROMASTER (VF) 3.6L/62TE EQUIPPED VEHICLES: IF THE TRANSMISSION BRACKET TO THE TRANSMISSION CASE FASTENERS ARE REMOVED DURING SERVICING, THE FASTENERS (Part Number 06511385A$) ARE ONE TIME USEAGE, AND MUST BE REPLACED, AND PROPERLY TORQUED TO 105 NM. Vehicles built prior to 10/23/2015 requires Service Kit PN
• 9003453 Service bulletin
  2020-11-18 · Engine And Engine Cooling
• Transmission,Trans Oil Pump,Torque Converter, Flexplate, Rear Seal, Engine NOTE: FOR ALL PROMASTER (VF) 3.6L/62TE EQUIPPED VEHICLES: IF THE TRANSMISSION BRACKET TO THE TRANSMISSION CASE FASTENERS ARE REMOVED DURING SERVICING, THE FASTENERS (Part Number 06511385A$) ARE ONE TIME USEAGE, AND MUST BE REPLACED, AND PROPERLY TORQUED TO 105 NM. Vehicles built prior to 10/23/2015 requires Service Kit P
• 9003453 Service bulletin
  2021-03-31 · Power Train
• Transmission,Trans Oil Pump,Torque Converter, Flexplate, Rear Seal, Engine NOTE: FOR ALL PROMASTER (VF) 3.6L/62TE EQUIPPED VEHICLES: IF THE TRANSMISSION BRACKET TO THE TRANSMISSION CASE FASTENERS ARE REMOVED DURING SERVICING, THE FASTENERS (Part Number 06511385A$) ARE ONE TIME USEAGE, AND MUST BE REPLACED, AND PROPERLY TORQUED TO 105 NM. Vehicles built prior to 10/23/2015 requires Service Kit PN
• 9004009 Service bulletin
  2021-03-31 · Power Train
• Transmission Kit with Torque Converter 1. All Promaster (VF) 3.6L/62TE equipped vehicles. If the transmission bracket to the transmission case fasteners are removed during servicing, the fasteners (Part Number 06511385A$) are one-time usage. Vehicles built prior to 10/23/2015 requires Service Kit PN 68461214AA; includes Transmission Isolator PN 68264483AA, and Adaptation Bracket 68264479AA and Fa
• 9003453 Service bulletin
  2021-04-07 · Suspension
• Transmission,Trans Oil Pump,Torque Converter, Flexplate, Rear Seal, Engine NOTE: FOR ALL PROMASTER (VF) 3.6L/62TE EQUIPPED VEHICLES: IF THE TRANSMISSION BRACKET TO THE TRANSMISSION CASE FASTENERS ARE REMOVED DURING SERVICING, THE FASTENERS (Part Number 06511385A$) ARE ONE TIME USEAGE, AND MUST BE REPLACED, AND PROPERLY TORQUED TO 105 NM. Vehicles built prior to 10/23/2015 requires Service Kit PN
• 9004206 Service bulletin
  2022-03-09 · Parking Brake
• Remanufactured Transmission Assembly 1. All Promaster (VF) 3.6L/62TE equipped vehicles: a) If the transmission bracket to the transmission case fasteners are removed during servicing, the fasteners (Part Number 06511385A$) must be replaced as they are one-time usage. b) Vehicles built prior to 10/23/2015 requires Service Kit PN 68461214AA; includes Transmission Isolator PN 68264483AA, and Adapta
• 9003453 Service bulletin
  2021-04-07 · Power Train
• Transmission,Trans Oil Pump,Torque Converter, Flexplate, Rear Seal, Engine NOTE: FOR ALL PROMASTER (VF) 3.6L/62TE EQUIPPED VEHICLES: IF THE TRANSMISSION BRACKET TO THE TRANSMISSION CASE FASTENERS ARE REMOVED DURING SERVICING, THE FASTENERS (Part Number 06511385A$) ARE ONE TIME USEAGE, AND MUST BE REPLACED, AND PROPERLY TORQUED TO 105 NM. Vehicles built prior to 10/23/2015 requires Service Kit PN
• 9004009 Service bulletin
  2021-04-07 · Power Train
• Transmission Kit with Torque Converter 1. All Promaster (VF) 3.6L/62TE equipped vehicles. If the transmission bracket to the transmission case fasteners are removed during servicing, the fasteners (Part Number 06511385A$) are one-time usage. Vehicles built prior to 10/23/2015 requires Service Kit PN 68461214AA; includes Transmission Isolator PN 68264483AA, and Adaptation Bracket 68264479AA and Fa

A stored code names the test that failed, never the part that caused it. The record above is what Ram and its owners have filed about it; the code’s page across every make has the whole file.