# Service bulletin 18\-103\-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.

- Type: Service bulletin
- NHTSA id: 10214637
- Published by NHTSA: 2022\-06\-27
- Manufacturer's number: 18\-103\-22
- Manufacturer's date: 2022\-05\-25
- NHTSA component: BACK OVER PREVENTION; EXTERIOR LIGHTING; SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## 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 \(DTC\) has 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214637-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214637-9999.pdf)

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

## Components

Brakes, Driver assistance, Electrical system, Lighting, Transmission and driveline, Automatic transmission, Backup camera, Transmission control module

## Trouble codes named

P0556

## Vehicles listed

- 2018 RAM PROMASTER

JSON: [/v1/bulletins/10214637](/v1/bulletins/10214637)

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