Mercury Milan persistent wrench and check engine light with RPM drop, slow acceleration, jerking during stops, and error code P2257 on Mercury Milan

Some Mercury Milan owners report experiencing persistent wrench and check engine lights, accompanied by symptoms like RPM drop, slow acceleration, and jerking during stops. These issues may indicate a problem with the electronic throttle body, which could require replacement. Additionally, the check engine light can be triggered by various factors, including emissions system components, sensors, or a faulty catalytic converter. Some owners have noted that a flashing check engine light, along with the wrench light, may point to serious engine-related concerns. A faulty throttle body can lead to erratic idle and trigger the check engine light, while engine stalling may be linked to fuel system, air intake, or ignition system issues. It is crucial for owners to address a flashing check engine light promptly, as it signals a serious problem that could lead to further damage. Given these symptoms, a thorough diagnostic check by a qualified mechanic is recommended to accurately identify and resolve the underlying issues.