Buick LaCrosse limp mode issue with persistent code P228D on Buick LaCrosse

Some Buick LaCrosse owners report experiencing a limp mode issue accompanied by the persistent code P228D, which often manifests as an illuminated check engine light, engine performance problems like rough running and stalling. These symptoms indicate that the vehicle may be stuck in "limp" mode. Owners emphasize the importance of a thorough diagnostic process, as the P228D code can occur in many modern vehicles, necessitating accurate diagnosis. Common causes include damaged wiring harnesses, faulty connectors, and other compromised components, which should be visually inspected. Repair costs for addressing the P228D code can vary significantly, typically ranging from $200 to $500, depending on whether parts like the fuel pressure regulator, fuel filter, or fuel pump need replacement. Identifying the root cause is crucial, as the code signifies that the Fuel Pressure Regulator 1 has exceeded control limits, resulting in excessively high fuel pressure. The overall cost of diagnosing and fixing the issue will depend on the auto repair shop's hourly rate and the time required for repairs.