What is your build date?
There is a TSB on this issue, sorry it doesn't answer your safe to drive question but at least it will be a quick look up for the dealer.
TSB 13-02-15 – 2013 Escape – 1.6L GTDI – Service Engine Soon Light – DTC P26B7 – Built On Or Before 2/13/2013
Some 2013 Escape vehicles equipped with a 1.6L Gasoline Turbocharged Direct Injection (GTDI) engine built on or
before 2/13/2013 may exhibit a service engine soon
light on with diagnostic trouble code (DTC) P26B7 stored in
the Powertrain Control Module (PCM) memory. This DTC indicates a fault is present with Coolant Bypass Solenoid C, located at the rear of the engine above the starter/ bell housing, and below the vacuum pump. Follow the service procedure in this TSB to correct the condition.
No longer the owner of a 2014 Escape Titanium, Platinum White, 1.6L, FWD, 18" Alloys, Panoramic Roof, Nav.
Build Date 08/15/2013 (Thursday)