# Service bulletin 14\-005\-24

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: 11002802
- Published by NHTSA: 2024\-07\-02
- Manufacturer's number: 14\-005\-24
- Manufacturer's date: 2024\-06\-28
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: Diesel Exhaust Fluid

## NHTSA's summary

"Diesel Exhaust Fluid \(DEF\) Fluid Freezing \*\*Customers must experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code \(DTC\):\*\* ● P203E\-00 \- Reductant Level Sensor 1 Circuit Intermittent\-Erratic. Customers may also experience one or more of the following: ● Repeated freeze/thaw cycles of the urea tank to cause solid DEF crystals to form and settle on the focus tube, blocking the level sensor signal. ● Rapid temperature swings from below freezing to above freezing causing an incomplete thaw of the DEF tank. When the vehicle is powered on, the diagnostic is enabled due to thawed DEF at the tank bottom surface, but the fluid in the center is still partially frozen. ● Not following the proper DEF fill procedure and overfilling the tank.\*\* This bulletin involves replacing the urea delivery module and grade vent valve and updating the Dosing Control Unit \(DCU\) software."

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11002802-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11002802-9999.pdf)

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

## Trouble codes named

P203E

## Vehicles listed

- 2019 to 2022 RAM 2500
- 2019 to 2022 RAM 3500
- 2019 to 2022 RAM 4500
- 2019 to 2022 RAM 5500

JSON: [/v1/bulletins/11002802](/v1/bulletins/11002802)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2014-005-24&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11002802&vehicle=Service%20bulletin%2014-005-24)