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Service bulletin S2621000002 REV.A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11030263
Published by NHTSA2026-03-25
Manufacturer's numberS2621000002 REV.A
Manufacturer's date2026-03-19
NHTSA componentENGINE

NHTSA's summary

The customer concern is Service Transmission, preventing the engine from shutting off. NOTE: The transmission will be in Park and able to hold the vehicle, but the cluster display would indicate Neutral, preventing the engine from shutting off.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
RAM 25002025, 2026
RAM 35002025, 2026
RAM 45002025, 2026
RAM 55002025, 2026

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
25-004-26 REV. A2026-09-30. Service bulletin. Exhaust Gas Temperature (EGT) Sensor Water Intrusion ’s VIN MUST be listed in VIP or your RSU VIN list. NOTE: This bulletin applies to ● The Vehicle MUST be built on or before February 16, 2026 (MDH North America, Enlarged 0216XX). Europe, Middle East & ● The vehicle MUST be equipped with a 6.7L I6 Cummins Turbo Africa, and India & Asia Diesel Engine (Sales Codes ETM or ETN). Pacific markets. CUSTOMER Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P2482-00 - Exhaust Gas Temperature Sensor Circuit High - Bank 1 Sensor 5. Customers may also comment on the following: ● Soot load is too high and power derate occurs due to regen being disabled. This bulletin involves replacing the EGT sensors.
91009222026-09-23. Service bulletin. SENSOR Exhaust Temperature If this sensor is being replaced due to an early-life P242B pending fault code, clear the fault code and perform the Powertrain Verification Test. Only replace the sensor if P242B returns as an active fault code.
25-004-262026-09-17. Service bulletin. Exhaust Gas Temperature (EGT) Sensor Water Intrusion CUSTOMER Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● P2482-00 - Exhaust Gas Temperature Sensor Circuit High - Bank 1 Sensor 5. Customers may also comment on the following: ● Soot load is too high and power derate occurs due to regen being disabled. This bulletin involves replacing the EGT sensors.
07-006-26 REV. A2026-09-10. Service bulletin. Engine Overheat Customers may comment on the following: SYMPTOM: ● Vehicle overheating. ● Temperature gauge is reading hot. ● Overheat symbol is illuminated in Instrument Panel Cluster (IPC). This bulletin involves inspecting the thermostat housing part number and, if necessary, replacing the thermostat.
1142542026-09-03. Service bulletin. RADIATOR - ENGINE COOLING
1142552026-09-03. Service bulletin. RADIATOR - ENGINE COOLING
91008822026-08-26. Service bulletin. PULLEY Fan If replacing 68209745AA, also replace 68723388AA, 05086958AB, and 68000833AD. Retain bolts, mark each with its original location, and submit a STAR ticket for parts return. Bolt P/Ns: 68005469AA, 03928873, 68445520AA, 04886003AA.
07-006-262026-08-26. Service bulletin. Engine Overheat Customers may comment on the following: ● Vehicle overheating. ● Temperature gauge is reading hot. ● Overheat symbol is illuminated in Instrument Panel Cluster (IPC). This bulletin involves inspecting the thermostat housing part number and, if necessary, replacing the thermostat.
1137542026-08-06. Service bulletin. SENSOR - EXHAUST TEMPERATURE
1137442026-08-06. Service bulletin. SENSOR - TURBOCHARGER SPEED