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Service bulletins for the 2012 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.

534 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
No. 21-132020-10-01. Service bulletin. ENGINE AND ENGINE COOLING. Instructions on how to rework the crankshaft pulse sender in the event of rough running.
No. 33-202020-10-01. Service bulletin. ENGINE AND ENGINE COOLING. Overview of Approved Porsche C20 Engine Oils
No. 16-202020-06-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. List of approved A40 engine oils for all applicable vehicles as of 1984.
122-T4N8F-052020-05-05. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Porsche intranet posting for Workshop Campaign WLA4.
122-T7L9Z-052020-05-05. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Workshop Campaign instructions for WS Campaign WLA4 - Retrofitting Heat Shield.
122-M8J3B-052020-05-04. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C40 engine oils for all Porsche models since 1984.
122-F4J4K-042020-04-02. Service bulletin. ENGINE AND ENGINE COOLING. List of approved engine oils for all Porsche models.
122-T9S3B-022020-02-04. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C30 engine oils for all Porsche vehicles since 1984.
122-Z2X7A-022020-02-04. Service bulletin. ENGINE AND ENGINE COOLING. List of approved C20 engine oils for all Porsche vehicles since 1984.
122-S7K8Z-022020-02-04. Service bulletin. WHEELS; ENGINE AND ENGINE COOLING. List of approved A40 engine oils for all Porsche vehicles since 1984.
122-T6A9F-022020-02-04. Service bulletin. SEATS; WHEELS; ENGINE. Parts withdrawal for various parts that were used in Recall and workshop campaigns.
122-N4W7J-112019-11-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. Parts withdrawal bulletin for the coolant pump on 991 and 992 911 models.
122-G2B4B-112019-11-01. Service bulletin. ENGINE AND ENGINE COOLING. List of approved A40 engine oils for Porsche vehicles.
122-X2X7N-072019-07-08. Service bulletin. ENGINE AND ENGINE COOLING. Notice to dealers that coolants will be moved out of the special tool cabinet in the dealer service department in order to make room for new special tools. All coolant tools will be moved to the "Coolant Cart" because they need to be housed in the same place.
122-X4X7D-092018-11-19. Service bulletin. ENGINE AND ENGINE COOLING. Cause The noises can occur if there is excessive spring force tolerance in the oil separator Date of introduction The optimized oil separators are used in production from November 25, 2015. Remedial action In the event of a customer complaint, check the part number of the installed oil separator and replace the oil separator if necessary.
122-P5G7U-072018-08-06. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE. Oil in the wiring harness. If oil is found in the engine wiring harness during a repair, the wiring harness and all the affected components (including the oil pump control valve) must be replaced.
122-L7V6H-032018-03-13. Service bulletin. ENGINE. Information: Subsequent performance increase to 316 kW(430 HP) Engine Type: Standard engine MA103 with engine power of 294 kW (400 hp) General: A parts kit is available for increasing the performance of the standard engine. Increased performance is achieved by implementing the following measures on the engine: ? New cylinder heads with flow-optimized intake ports, valves and valve springs. ? New intake camshafts. ? New resonance intake manifold with switching flaps (material: aluminum sand cast). ? Modified maps for the DME control unit.
122-U8H3K-062017-10-15. Service bulletin. ENGINE AND ENGINE COOLING. Concerns: Motor for rear side section flaps Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is the possibility that motors for controlling the rear side section flaps, on which the pinion shaft is not connected properly to the motor due to a manufacturing defect, were installed in the affected vehicles. In the event of emergency operation, the convertible top cannot therefore be closed manually as described in the Owner?s Manual.
122-V3U7E-062017-08-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); ENGINE AND ENGINE COOLING. Concerns: Plug on crankcase for cylinders 1-3. Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is the possibility that a plug that was pressed into and sealed to the crankcase is not seated securely enough in the opening on the affected vehicles. As a result, this can cause the plug to become loose and as a result, oil can suddenly leak out of the crankcase, resulting in immediate engine damage.
122-D9G3U-062017-08-01. Service bulletin. ENGINE AND ENGINE COOLING. Concerns: Relay for engine-compartment blower Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is the possibility that the relay for setting 1 of the engine-compartment blower is not inserted correctly in the relay carrier on the affected vehicles. If the relay is not inserted correctly, the function of setting 1 of the engine-compartment blower cannot be guaranteed and the driver will see a warning to this effect in the multi-function display. To remedy the situation, check that the engine-compartment blower relay is seated correctly in the relay carrier.
122-P4E8W-062017-08-01. Service bulletin. ENGINE AND ENGINE COOLING. Concerns: Relay for engine-compartment blower Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is the possibility that the relay for setting 1 of the engine-compartment blower is not inserted correctly in the relay carrier on the affected vehicles. If the relay is not inserted correctly, the function of setting 1 of the engine-compartment blower cannot be guaranteed and the driver will see a warning to this effect in the multi-function display. To remedy the situation, check that the engine-compartment blower relay is seated correctly in the relay carrier.
122-Q5Q9Z-062017-08-01. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING. Concerns: Relay for engine-compartment blower Situation: There is a possibility that the relay for setting 1 of the engine-compartment blower is not inserted correctly in the relay carrier on the affected vehicles. If the relay is not inserted correctly, the function of setting 1 of the engine-compartment blower cannot be guaranteed and the driver will see a warning to this effect in the multi-function display.
122-K4T2R-062017-08-01. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING. Concerns: Relay for engine-compartment blower Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. There is the possibility that the relay for setting 1 of the engine-compartment blower is not inserted correctly in the relay carrier on the affected vehicles. If the relay is not inserted correctly, the function of setting 1 of the engine-compartment blower cannot be guaranteed and the driver will see a warning to this effect in the multi-function display. To remedy the situation, check that the engine-compartment blower relay is seated correctly in the relay carrier.
122-V9B2C-062017-08-01. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Concerns: DME control unit Information: This is to inform you of a voluntary Workshop Campaign on certain 2010 to 2012 model year 911 GT3 (997)/911 GT3 RS (997)/911 GT3 RS 4.0 (997) vehicles. There is the possibility that an implausible oil pressure will be measured and stored in the DME control unit after switching off the engine on the affected vehicles. As a result, this can cause the oil pressure warning light to be activated unnecessarily in the instrument cluster the next time the engine is started. To remedy the situation, re-program the DME control unit using a modified data record.
122-D5B3L-062017-07-28. Service bulletin. ENGINE. Center intake-air distributor Information: This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. An intake-air distributor, on which the shaft for guiding the resonance flap does notmeet the required specifications, may have been installed on the affected vehicles. As a result, the shaftmay break and broken pieces may get into the intake duct and end up in the combustion chambers. This can cause loud noises. It can also result in mechanical damage if the engine is not stopped in time.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.