What does the wrench light mean on a ford fiesta?

The wrench light on a Ford Fiesta is a powertrain malfunction indicator light. When the vehicle computer detects a problem with the engine or transmission, it turns on the wrench light and restricts the vehicle's performance.Having a powertrain failure or powertrain fault tends to happen to older and or higher mileage vehicles and can cause Your vehicle's power components to overheat. If You ignore these warnings, Your vehicle may operate in a defaulted safe mode until the issue has been resolved/repaired.The light may come on along with the check engine light. Whether the check engine light is on or not, get the codes with a good OBD scan tool and narrow down the possible causes of the problem.