RAM Promaster 2020 — technical service bulletin
Bulletin 18-098-22 · NHTSA communication 10214619 · issued May 19, 2022
Technical service bulletin
communication type
Power Train
component
2020
model years
1
vehicle entries
Official 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.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.