Friday, August 7, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

Mercedes-Benz A 220 2015–2022technical service bulletin

Bulletin LI09.00-P-074093 · NHTSA communication 10206077 · issued Dec 8, 2021

Technical service bulletin
communication type
Engine and Engine Cooling
component
2015–2022
model years
60
vehicle entries

Official summary

"MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 â Boost Pressure is Too High"" "

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.