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Service bulletin S2025000001 Rev.

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 id10184701
Published by NHTSA2020-12-28
Manufacturer's numberS2025000001 Rev.
Manufacturer's date2020-11-05
NHTSA componentEXTERIOR LIGHTING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT

NHTSA's summary

(Rev. B) Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.

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

Equipment and accessories, Lighting, Transmission and driveline, Automatic transmission, Transmission control module

Trouble codes named

P203E

Vehicles listed
JEEP GLADIATOR2021
JEEP GRAND CHEROKEE2014, 2015, 2016, 2017, 2018, 2019
JEEP WRANGLER2020, 2021
RAM 15002014, 2015, 2016, 2017, 2018, 2019, 2020, 2021

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

Recalls for the same vehicles and component
23V2650002023-04-13. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
18V2800002018-05-01. POWER TRAIN:AUTOMATIC TRANSMISSION
18V1000002018-02-08. POWER TRAIN:AUTOMATIC TRANSMISSION
17V8210002017-12-20. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
16V2490002016-04-27. EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH; POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH
16V2400002016-04-25. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
14V1610002014-04-01. POWER TRAIN:AUTOMATIC TRANSMISSION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
18100232024-01-08. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) has been set: ?**P0441 - EVAP Purge System Performance (for North America and Mexico markets only).** ? P0456 - EVAP System Small Leak. NOTE: ** If DTC P0456 is present, use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. ** This bulletin involves reprogramming the PCM with the latest available software.
S23210000052024-01-08. Service bulletin. Transmission Fluid Leak From Under The Vehicle.
NotificationZ602024-01-02. Service bulletin. Customer Satisfaction Notification Z60 Powertrain Control Module Software
18100232023-10-30. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) has been set: ?**P0441 - EVAP Purge System Performance (for North America and Mexico markets only).** ? P0456 - EVAP System Small Leak. NOTE: ** If DTC P0456 is present, use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. ** This bulletin involves reprogramming the PCM with the latest available software.
S23210000052023-10-30. Service bulletin. Transmission Fluid Leak From Under The Vehicle.
18087232023-10-02. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0420 - Catalyst System Efficiency Below Threshold Bank 1. ? P0430 - Catalyst System Efficiency Below Threshold Bank 2. This bulletin involves reprogramming the PCM with the latest available software.
18088232023-10-02. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set:? P0420 - Catalyst System Efficiency Below Threshold Bank 1. ? P0430 - Catalyst System Efficiency Below Threshold Bank 2. This bulletin involves reprogramming the PCM with the latest available software.
18073232023-10-02. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? **U115F-00 - Lost Communication With Driver Presence Detection Module.** ? P02EE - Cylinder 1 Injector Circuit Performance. ? P02EF - Cylinder 2 Injector Circuit Performance. ? P02F0 - Cylinder 3 Injector Circuit Performance. ? P02F1 - Cylinder 4 Injector Circuit Performance. The customer may also experience one or more of the following when DTC U115F-00 is triggered: ? **Disabled engine stop / start (ESS) feature. ? Service ESS light and EVIC message is displayed in the Instrument Panel Cluster (IPC).** This bulletin involves reprogramming the PCM with the latest available software.
18086232023-10-02. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software.
18084232023-10-02. Service bulletin. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? P0420 - Catalyst System Efficiency Below Threshold Bank 1. ? P0430 - Catalyst System Efficiency Below Threshold Bank 2. ? P0606 - Internal Control Processor. Customer may also experience the following: ? While the engine is running, customer may experience a vehicle limp in/home mode (speed limitation, engine throttle limitation and the ETC light flashing and MIL will be on) or the vehicle may experience a no-start condition. NOTE: Associated with DTC: P0606 - Internal Control Processor. This bulletin involves reprogramming the PCM with the latest available software.