WenmarOpen by Wenmar Pro

Service bulletin 18-098-22

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 id10214619
Published by NHTSA2022-06-27
Manufacturer's number18-098-22
Manufacturer's date2022-05-19
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT; POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); SERVICE BRAKES, HYDRAULIC

NHTSA's summary

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) have been set: P0556 - Brake Booster Pressure Sensor Circuit Performance. Customer may describe the following: Fuel odor during frequent stop and re-start driving, during high ambient temps.

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

Brakes, Equipment and accessories, Transmission and driveline, Automatic transmission, Manual transmission, Transmission control module

Trouble codes named

P0556

Vehicles listed
RAM PROMASTER2020

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