Service bulletins for the 2021 Mercedes-Benz AMG GT
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.
244 on file from NHTSA, as of 2026-10-19.
About P22C9 on the 2021 Mercedes-Benz AMG GT: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P22C9 are shown. Show all
| LI09.41-P-078735 | 2025-03-11. Service bulletin. ENGINE. Complaint Check engine light illuminated Fault code present in MRG3 control unit P22C800 or P22C900 - The valve of the exhaust gas turbocharger is jammed. Cause Check valve in charge air pipe jammed. Remedy Replaced charge air line with check valve. |
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| LI09.41-P-078735 | 2024-12-23. Service bulletin. ENGINE. Complaint Check engine light illuminated Fault code present in MRG3 control unit P22C900 - The valve of the exhaust gas turbocharger is jammed closed. Cause Check valve in charge air pipe jammed closed. Remedy Replaced charge air line with check valve. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.