Cylinder 10 is not contributing its expected share of power to the engine. The PCM has detected that this cylinder's fuel contribution is significantly different from the others.
Find certified mechanics near you who can diagnose and repair P0290.
For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.