# Service bulletin S2518000009

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: 11024573
- Published by NHTSA: 2025\-10\-29
- Manufacturer's number: S2518000009
- Manufacturer's date: 2025\-10\-21
- NHTSA component: ENGINE

## NHTSA's summary

Check Engine Lamp\-On

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024573-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024573-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2026 RAM 1500

## Other bulletins for the same vehicles and component

- [S2609000006 REV.A](/bulletins/11038333.md), 2026-10-07, Service bulletin: ENGINE. Customer indicates Malfunction Indicator Light \(MIL\) or Check Engine Light \(CEL\) coming on.
- [9100898](/bulletins/11037347.md), 2026-09-17, Service bulletin: ENGINE. Engine PNs: MY 24\-26 WD/DT \(5.7L\) Code P00B is being misdiagnosed and incorrect parts are being installed causing over repair. Refer to SOL S2609000006 The IAFM Foam Engine Valley Cover \(PN 53013735AB\) does not provide sufficient clearance for proper routing of the MDS solenoid jumper harness \(PN 05148163AE\). As a result, the harness may become compressed by the foam cover. To prevent unnecessary part replacement, the MDS solenoid jumper harness \(PN 05148163AE\) should be inspected for damage or pinch conditions prior to replacing the following part numbers: Engine PNs: 68409343AA 68409357AA 68450915AA OCV PNs: 53022338AB Phaser PNs: 53022298AA 53022298AB
- [9100861 Rev 3](/bulletins/11035994.md), 2026-08-06, Service bulletin: ENGINE. PUMP, Auxiliary Coolant Before replacing the Auxiliary Coolant Pump, please perform the following steps: 1\) Key ON/OFF and let the after\-run pump run for at least 20 minutes before moving on to step \#2. 2\) Inspect the pump connector area for presence of water. 3\) Inspect the pump connector for corrosion. 4\) Inspect the pump for coolant contamination as this can cause the pump to stall. 5\) Inspect battery terminals for damage to rule out a battery drainage issue. 6\) Ensure the PCM is up\-to\-date with the latest available flash. If correct repair is not performed then the claim or condition will be recovered by Warranty Operations.
- [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.
- [9100861 Rev 1](/bulletins/11035194.md), 2026-07-23, Service bulletin: ENGINE. PUMP, Auxiliary Coolant Before replacing the Auxiliary Coolant Pump, please perform the following steps: 1\) Key ON/OFF and let the after\-run pump run for at least 20 minutes before moving on to step \#2. 2\) Inspect the pump connector area for presence of water. 3\) Inspect the pump connector for corrosion. 4\) Inspect the pump for coolant contamination as this can cause the pump to stall. 5\) Inspect battery terminals for damage to rule out a battery drainage issue. 6\) Ensure the PCM is up\-to\-date with the latest available flash.
- [9100861](/bulletins/11035070.md), 2026-07-18, Service bulletin: ENGINE; ELECTRICAL SYSTEM. PUMP, Auxiliary Coolant Before replacing the Auxiliary Coolant Pump, please perform the following steps: 1\) Key ON/OFF and let the after\-run pump run for at least 20 minutes before moving on to step \#2. 2\) Inspect the pump connector area for presence of water. 3\) Inspect the pump connector for corrosion. 4\) Inspect the pump for coolant contamination as this can cause the pump to stall. 5\) Ensure the PCM is up\-to\-date with the latest available flash. 6\) Inspect battery terminals for damage to rule out a battery drainage issue.
- [S2418000012 REV.B](/bulletins/11034920.md), 2026-07-08, Service bulletin: ENGINE. Mil On/Check Engine Lamp \(CEL\) On, Engine Runs Rough
- [09\-012\-26 REV. A](/bulletins/11034321.md), 2026-07-02, Service bulletin: ENGINE. Oil Pan Leak Customers may experience the following: SYMPTOM: ● 'Low Oil Level' message on in the Instrument Panel Cluster \(IPC\). ● Oil Leak. This bulletin involves replacing the engine oil pan.
- [09\-012\-26](/bulletins/11034320.md), 2026-07-02, Service bulletin: ENGINE. Oil Pan Leak Customers may experience the following: SYMPTOM: ● 'Low Oil Level' message on in the Instrument Panel Cluster \(IPC\). ● Oil Leak. This bulletin involves replacing the engine oil pan.
- [9100839](/bulletins/11033961.md), 2026-06-18, Service bulletin: ENGINE. 3\-way valves are available in STAR Parts as two distinct components and must be selected correctly based on application. The High Temp 3\-way valve \(68309834AC\) is located between the engine and the bulkhead at the rear of the engine compartment. The Low Temp 3\-way valve \(68448241AA\) is located between the engine and the radiator at the front of the engine. When ordering or servicing, ensure the correct valve is identified and installed in the proper location, as incorrect part selection may lead to improper thermal system operation and repeat repairs.

JSON: [/v1/bulletins/11024573](/v1/bulletins/11024573)

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