Ford Customer Satisfaction Program 21n12. Coolant intrusion into one or more cylinders for the 1.5L Ecoboost motor. Ford will not repair this motor under the 21n12 code beyond 7 years or 84,000 miles. CSP 19b37 is required prerequisite prior to performing the 21n12 repair, so the 21n12 repair timeline therefore should start at the date of the 19b37 repair. My vehicle is just 4 months out of the 7 years (in service date) and Ford wonat cover the repair. Vehicle is inoperable and the repair cost will exceed the cars value after repairs are made. The vehicle currently has 79,xxx miles which is unacceptable by todayas vehicle life standards.