WenmarOpen by Wenmar Pro

Service bulletin 1400323

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 id10236935
Published by NHTSA2023-05-30
Manufacturer's number1400323
Manufacturer's date2023-04-15
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Diesel Exhaust Fluid (DEF) Fluid Freezing Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: ? P203E-00 - Reductant Level Sensor 1 Circuit Intermittent-Erratic. This bulletin involves replacing the urea delivery module and grade vent valve and updating the Dosing Control Unit (DCU) software.

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

Electrical system

Trouble codes named

P203E

Vehicles listed
CHRYSLER 3002021, 2022
DODGE CHALLENGER2020, 2021, 2022
DODGE CHARGER2020, 2021, 2022
RAM 25002019, 2020, 2021, 2022
RAM 35002019, 2020, 2021, 2022
RAM 45002019, 2020, 2021, 2022
RAM 55002019, 2020, 2021, 2022

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

Recalls for the same vehicles and component
20230262023-02-09. Electrical
23V0600002023-02-09. ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
20216292021-10-14. Electrical
21V7980002021-10-14. ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
21V6640002021-08-26. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
20211382021-03-11. Electrical
21V1630002021-03-11. ELECTRICAL SYSTEM
20V5110002020-08-27. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; ELECTRICAL SYSTEM:SOFTWARE

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
91009012026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
1137442026-08-06. Service bulletin. SENSOR - TURBOCHARGER SPEED
1137422026-08-06. Service bulletin. SENSOR - TURBOCHARGER SPEED
08-291-262026-07-29. Service bulletin. R1H UBQ/UEQ Intermittent HVAC Page Lockup Customers may experience one or more of the following: SYMPTOM: ● Intermittently the HVAC page on the Display Screen Module will change temperature and blower speed and then freeze. ● When on the HVAC page, the Display Screen Module may not respond to touch. All other pages operate as intended.
1130692026-07-08. Service bulletin. SWITCH – HEADLAMP
1130702026-07-08. Service bulletin. SWITCH – HEADLAMP
S2508000025 REV.A2026-07-02. Service bulletin. Instrument Panel Cluster (IPC) and Radio Compass Display has Dashes (--)
S268A0000142026-07-02. Service bulletin. Radio/ETM is Adding Approximately 27mA Draw to Vehicle When in Logistics Mode
S1623000028 Rev. K2026-06-18. Service bulletin. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
91008352026-06-18. Service bulletin. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.