RAM Promaster 2018–2020 — technical service bulletin
Bulletin 0807620 · NHTSA communication 10221899 · issued Aug 29, 2020
Technical service bulletin
communication type
Service Brakes, Hydraulic
component
2018–2020
model years
3
vehicle entries
Official summary
Flash: Anti-lock Brake System (ABS) Module Updates This bulletin involves reprogramming the ABS module with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs):P0731 - Gear Ratio Error In 1st. P0732 - Gear Ratio Error In 2nd. P083B - LC Pressure Switch Rationality. P0841 - L/R Pressure Switch Rationality. P0868 - Line Pressure Low.
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.