Ford is recalling over 850,000 vehicles due to a potential low-pressure fuel pump failure, according to the National Highway Traffic Safety Administration, NHTSA.

Ford has not yet released a remedy for the issue. Impacted owners will receive letters alerting them to the problem starting July 14.

The NHTSA estimates that ~10% of the recalled vehicles have this specific defect. Before a fuel pump failure occurs, drivers might observe symptoms such as poor engine performance, such as misfiring, rough running, reduced power, or the illumination of the check engine light.