# Service bulletin 109035

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.

- Type: Service bulletin
- NHTSA id: 11026627
- Published by NHTSA: 2025\-12\-17
- Manufacturer's number: 109035
- Manufacturer's date: 2025\-12\-10
- NHTSA component: POWER TRAIN

## NHTSA's summary

SHIFTER \- TRANSMISSION

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026627-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11026627-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 2025 to 2026 RAM 1500

## Other bulletins for the same vehicles and component

- [S2621000004](/bulletins/11038329.md), 2026-10-07, Service bulletin: POWER TRAIN. The Customer May Complain About a Popping Noise, Grinding Noise, or an Intermittent No Reverse or Forward Transmission Engagement. The Tech May Find Damaged and/or Worn Transmission Output Shaft Splines \(850RE Transmission Only\)
- [AOD COMBO](/bulletins/11038324.md), 2026-10-07, Service campaign: POWER TRAIN. Customer Satisfaction Notification A0D – Electronic Shift Module \- Dealer Notification The Electronic Shift Module \(ESM\) software on about 20,000 of the above vehicles may cause the rotary electronic shifter to become unresponsive. This condition may cause a "Service Shifter" message to appear on the instrument panel cluster and prevent the vehicle from starting.
- [18\-075\-26 REV. A](/bulletins/11038313.md), 2026-10-07, Service bulletin: POWER TRAIN. Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● P0111\-00 \- Intake Air Temperature Sensor 1 Circuit Performance \(In Active or Stored status\) ● P0071\-00 \- Ambient Air Temperature Sensor Performance \(In Active or Stored status\) ● P0073\-00 \- Ambient Air Temperature Sensor Circuit "A" High \(In Active or Stored status\) ● P062B\-00 \- Internal Control Module Fuel Injector Control Performance ● P0E7E\-00 \- Coolant Bypass Valve B Control Circuit \(In Active or Stored status\) ● P2AF6\-00 \- Starter Relay 3 Stuck Off \(with PCR\). ● P00FD \- Battery B State Of Charge Performance. ● P013F\-00 \- O2 Sensor 2/1 Delayed Response \- Lean To Rich Bank. \(In Active or Stored status\) ● P014A\-00 \- O2 Sensor 2/2 Delayed Response \- Rich to Lean Bank. \(In Active or Stored status\) ● P013E\-00 \- O2 Sensor 2/1 Delayed Response \- Rich to Lean Bank. \(In Active or Stored status\) ● P014B\-00 \- O2 Sensor 2/2 Delayed Response \- Lean To Rich Bank. \(In Active or Stored status\) ● P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/Stuck Off.\(In Active or Stored status\) ● P0073\-00 \- Ambient Air Temperature Sensor Circuit "A" High. \(In Active or Stored status\) ● P0071\-00 \- Ambient Air Temperature Sensor Performance. \(In Active or Stored status\) ● P2C90\-00 \- Crankcase Ventilation System \- Hose "A" Disconnected. \(In Active or Stored status\) ● P1CEA\-00 \- Boost Side EVAP Purge System Performance. \(In Active or Stored status\) ● P05BD\-00 \- Stop\-Start Mode Switch Range/Performance. \(In Active or Stored status\) ● P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking. \(In Active or Stored status\) ● U0673\-00 \- Lost Communication With Ion Sense Module. \(In Active or Stored status\) Customers may also comment on one or more of the following: ● High Elevation misfire. Electronic Start Stop \(ESS\) inoperative or "Auto Stop/Start Not Ready" message displayed in the Instrument Panel Cluster \(IPC\). NOTE: \*\*Normal Auto Stop/Start inhibit conditions should not be considered the cause of this concern. The condition is associated with DTC P2AF6.\*\* ● "Door Ajar" message on when door is closed. ● BSCM MIL illumination request not setting the MIL in the PCM High oil level indicator illuminated on the IPC. \*\*The following software enhancements are now available: ● Improvements to prevent misfire DTCs P0300\-P0306 that may set if one of the following DTCs set: ○ P0335\-00 \- Crankshaft Position Sensor Circuit. ○ P0336\-00 \- Crankshaft Position Sensor Performance.\*\* This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
- [18\-071\-26 REV. A](/bulletins/11038312.md), 2026-10-07, Service bulletin: POWER TRAIN. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● \*\*P2237\-00 \- O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1. ● P2240\-00 \- O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1. ● P2251\-00 \- O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1. ● P2254\-00 \- O2 Sensor Negative Current Control Circuit/Open Bank 2 Sensor 1. ● P2243\-00 \- O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1. ● P2247\-00 \- O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 1. ● P015B\-00 \- O2 Sensor Delayed Response \- Lean To Rich Bank 1 Sensor 1. ● P015D\-00 \- O2 Sensor Delayed Response \- Lean To Rich Bank 2 Sensor 1. ● P0E7C\-00 \- Coolant Bypass Valve "B" Control Circuit Low. ● P0E7D\-00 \- Coolant Bypass Valve "B" Control Circuit High. ● P0E7E\-00 \- Coolant Bypass Valve "B" Control Circuit Range/Performance. ● P0E7F\-00 \- Coolant Bypass Valve "B" Control Circuit Stuck/Open. ● U063C\-00 \- Lost Communication With Coolant Bypass Valve Actuator "B". ● P0100\-00 \- Mass Or Volume Air Flow Sensor "A" Circuit. ● P0101\-00 \- Mass Or Volume Air Flow Sensor "A" Circuit Range/Performance. ● P0461\-00 \- Fuel Level Sensor "A" Circuit Range/performance. ● P0072\-00 \- Ambient Air Temperature Sensor Circuit "A" Low. ● P062B\-00 \- Internal Control Module Fuel Injector Control Performance. ● B1810\-00 \- Driver Door Shorted Low. ● B25C7\-00 \- Redundant Driver Door Shorted Low.\*\* ● U0104\-00 \- Lost Communication With Cruise Control Module \(NA Market Only\) \(In Active or Stored status\). ● U0405\-00 \- Invalid Data Received From Cruise Control Module \(NA Market Only\) \(In Active or Stored status\). NOTE: Vehicles setting DTCs U0405\-00 and U0104\-00 may experience an inability to be cleared.
- [21\-062\-26](/bulletins/11037573.md), 2026-09-30, Service bulletin: POWER TRAIN. Transmission Rattle Customers may comment on the following: SYMPTOM: ● Rattle noise coming from the transmission. This bulletin involves inspecting and possibly tightening the transmission oil heater mounting nuts to proper specification.
- [S2418000012 REV.C](/bulletins/11037155.md), 2026-09-08, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. Mil On/Check Engine Lamp \(CEL\) On, Engine Runs Rough
- [18\-077\-26](/bulletins/11036359.md), 2026-08-26, Service bulletin: POWER TRAIN; ENGINE. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P0300 \- Multiple Cylinder Misfire. Customers may experience one of the following: ● Vehicle runs rough on initial cold start only after an overnight or extended soak. \*\*This bulletin involves reprogramming the PCM with the latest available software.\*\*
- [08\-308\-26](/bulletins/11036154.md), 2026-08-13, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. Flash: Electronic Shift Module \(ESM\) Updates Customers may comment on one or more of the following: SYMPTOM: ● Shifter is unresponsive. ● Unable to start the vehicle. ● “Service Shifter” message displayed in the Instrument Panel Cluster \(IPC\). This bulletin involves inspecting and possibly reprogramming the ESM with the latest available software.
- [18\-075\-26](/bulletins/11035325.md), 2026-07-29, Service bulletin: POWER TRAIN; ENGINE. Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● \*\*P0111\-00 \- Intake Air Temperature Sensor 1 Circuit Performance \(In Active or Stored status\) ● P0071\-00 \- Ambient Air Temperature Sensor Performance \(In Active or Stored status\) ● P0073\-00 \- Ambient Air Temperature Sensor Circuit "A" High \(In Active or Stored status\) ● P062B\-00 \- Internal Control Module Fuel Injector Control Performance ● P0E7E\-00 \- Coolant Bypass Valve B Control Circuit \(In Active or Stored status\)\*\* ● P2AF6\-00 \- Starter Relay 3 Stuck Off \(with PCR\). ● P00FD \- Battery B State Of Charge Performance. ● P013F\-00 \- O2 Sensor 2/1 Delayed Response \- Lean To Rich Bank. \(In Active or Stored status\) ● P014A\-00 \- O2 Sensor 2/2 Delayed Response \- Rich to Lean Bank. \(In Active or Stored status\) ● P013E\-00 \- O2 Sensor 2/1 Delayed Response \- Rich to Lean Bank. \(In Active or Stored status\) ● P014B\-00 \- O2 Sensor 2/2 Delayed Response \- Lean To Rich Bank. \(In Active or Stored status\) ● P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/Stuck Off.\(In Active or Stored status\) ● P0073\-00 \- Ambient Air Temperature Sensor Circuit "A" High. \(In Active or Stored status\) ● P0071\-00 \- Ambient Air Temperature Sensor Performance. \(In Active or Stored status\) ● P2C90\-00 \- Crankcase Ventilation System \- Hose "A" Disconnected. \(In Active or Stored status\) ● P1CEA\-00 \- Boost Side EVAP Purge System Performance. \(In Active or Stored status\) ● P05BD\-00 \- Stop\-Start Mode Switch Range/Performance. \(In Active or Stored status\) ● P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking. \(In Active or Storedstatus\) ● U0673\-00 \- Lost Communication With Ion Sense Module.\(In Active or Stored status\) Customers may also comment on one or more of the following: ● \*\*High Elevation misfire. ● Electronic Start Stop \(ESS\) inoperative. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
- [18\-071\-26](/bulletins/11035321.md), 2026-07-29, Service bulletin: POWER TRAIN. Flash: Powertrain Control Module \(PCM\) Updates Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes \(DTCs\): ● \*\*U0104\-00 \- Lost Communication With Cruise Control Module \(NA Market Only\) \(In Active or Stored status\). ● U0405\-00 \- Invalid Data Received From Cruise Control Module \(NA Market Only\) \(In Active or Stored status\). NOTE: Vehicles setting DTCs U0405\-00 and U0104\-00 may experience an inability to be cleared.\*\* ● P06DD\-00 \- Engine Oil Pressure Control Circuit Performance/Stuck Off. ● P0073\-00 \- Ambient Air Temperature Sensor Circuit "A" High. ● P0071\-00 \- Ambient Air Temperature Sensor Performance. ● P2C90\-00 \- Crankcase Ventilation System \- Hose "A" Disconnected. ● P1CEA\-00 \- Boost Side EVAP Purge System Performance. ● P05BD\-00 \- Stop\-start Mode Switch Range/Performance. ● P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking. ● U0673\-00 \- Lost Communication With Ion Sense Module. ● P00C6\-00 \- Fuel Rail Pressure Too Low \- Engine Cranking \- in ACTIVE or STORED status. ● P0325\-00 \- Knock/Combustion Vibration Sensor 1 Circuit \- in ACTIVE or STORED status. ● P0330\-00 \- Knock/Combustion Vibration Sensor 2 Circuit \- in ACTIVE or STORED status. ● P032A\-00 \- Knock\-Combustion Vibration Sensor C Circuit \- in ACTIVE or STORED status. ● P018B\-00 \- Fuel Pressure Sensor "B" Circuit Range/Performance \- in ACTIVE or STORED status. ● P2AF6\-00 \- Starter Relay 3 Stuck Off \- in ACTIVE or STORED status. ● P0300\-00 \- Multiple Cylinder Misfire \- in ACTIVE or STORED status set during cold start catalyst heating. ● P0301\-00 \- Cylinder 1 Misfire \- in ACTIVE or STORED status set during cold start catalyst heating. ● P0302\-00 \- Cylinder 2 Misfire \- in ACTIVE or STORED status set during cold start catalyst heating. ● P0303\-00 \- Cylinder 3 Misfire \- in ACTIVE or STORED status set during cold start catalyst heating. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.

JSON: [/v1/bulletins/11026627](/v1/bulletins/11026627)

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