Service bulletins for the 2011 Buick Regal
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.
1527 on file from NHTSA, as of 2026-10-19.
About P228D on the 2011 Buick Regal: what the code means, and the bulletins and recalls about the same components.
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By component
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Only bulletins with trouble code: P228D are shown. Show all
| PIP5203C | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician about a service engine soon light on. Technician will find diagnostic trouble codes P0089 and P228D set in the engine control module. This concern could be due to an incorrect intake camshaft or camshaft actuator sprocket. A diagnostic trouble code of P0171 could also set from installing incorrect injectors. |
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| PIP5203B | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician about a service engine soon light on. Technician will find diagnostic trouble codes P0089 and P228D set in the engine control module. This concern could be due to an incorrect intake camshaft or camshaft actuator sprocket. A diagnostic trouble code of P0171 could also set from installing incorrect injectors. |
| PIP5203A | 2017-08-15. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about a service engine soon light on. Technician will find diagnostic trouble codes P0089 and P228D set in the engine control module. This concern could be due to an incorrect intake camshaft or camshaft actuator sprocket. A diagnostic trouble code of P0171 could also set from installing incorrect injectors. |
| PIP5203 | 2017-08-15. Service bulletin. POWER TRAIN; ENGINE. This Preliminary Information communication provides information to the technician about a service engine soon light on. Technician will find diagnostic trouble codes P0089 and P228D set in the engine control module. This concern could be due to an incorrect intake camshaft or camshaft actuator sprocket. A diagnostic trouble code of P0171 could also set from installing incorrect injectors. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.