Service bulletins for the 2021 Porsche 911
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.
750 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Engine are shown. Show all
| No. 01-22 | 2022-03-03. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C20 engine oils for all Porsche models that use C20 oil. |
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| No. 183-21 | 2022-02-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. Technical information on the rattling noises from around the rear axle. Check engine mount. |
| No. 115-21 | 2022-02-04. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Technical information WME9 - re-programing PDK control unit. |
| No. 2125.1 | 2022-02-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Instructions on advanced technical information for the 911 ignition lock warning along with fault code B143C29. |
| No. 151-21 | 2022-01-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Technical information for a warning message - "engine control system fault"/ fault memory entry for high fuel pressure in DME control unit. |
| No. 174-21-1 | 2022-01-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Technical information on why engine will not start - checking engine ground strap. |
| No. 150-21 | 2021-11-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Technical information on the engine control system fault - engine-Compartment blower in the DME control unit. |
| No. 97-21 | 2021-11-05. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C30 engine oils for all Porsche models using C30 oil. |
| No. 98-21 | 2021-11-05. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C20 engine oils for all Porsche models using C40 oil. |
| No. 95-21 | 2021-11-05. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C40 engine oils for all Porsche models using C40 oil. |
| No. 94-21 | 2021-11-05. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C30 engine oils for all Porsche models using C30 oil. |
| No. 93-21 | 2021-11-05. Service bulletin. ENGINE AND ENGINE COOLING. Overview of approved engine C20 engine oils for all Porsche models using C20 oil. |
| No. 55-21 | 2021-09-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. Allocation of approved engine oils per model for all models MY21 and newer. |
| No. 56-21-2 | 2021-09-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. List of approved C20 engine oils for all Porsche models MY21 and newer. |
| No. 57-21 | 2021-09-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. List of approved C30 engine oils for all Porsche models MY21 and newer. |
| No. 58-21 | 2021-09-03. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. List of approved C40 engine oils for all Porsche models MY21 and newer. |
| No. 2118 | 2021-09-02. Service bulletin. ENGINE AND ENGINE COOLING. Advanced technical information for an upper oil pan seal housing leak on the 992 generation 911. |
| No. 77-21 | 2021-08-04. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for what to do if there are complaints or issues with vehicles shortly after charging or removing and installing spark plugs. |
| No. 2110.1 | 2021-06-02. Service bulletin. ENGINE AND ENGINE COOLING. Instructions for correcting DMTL leakage faults on 4.0 engines. |
| No. 2110 | 2021-06-02. Service bulletin. ENGINE AND ENGINE COOLING. Advanced technical information for diagnosing DMTL leakage faults on 4.0 engines. |
| No. 49-21-2 | 2021-04-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE. Porsche recall campaign information for Recall campaign AMA3 - Reworking Various Threaded Connections on the Chassis. |
| No. 14-21 | 2021-04-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. List of approved C20 engine oils for new Porsche vehicles. |
| No. 11-21 | 2021-04-05. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. List of approved C40 engine oils for new Porsche vehicles. |
| No. 10-21 | 2021-04-05. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C30 style engine oils for new Porsche vehicles. |
| No. 09-21 | 2021-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved A40 style engine oils for new and classic Porsche vehicles MY 1984 and newer. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.