Error Code P1862
 

Hi, just purchased a 57 plate Colt for a family member and already I have a problem! Its a CZ2 automatic done about 25000 miles. Drove it home from Northampton ( about 60 miles) without issue , but now I have an engine management light on. Plugged in my cheapie wifi OBD2 reader and got a P1862 error message. Google doesn't seem to give me a clear answer to what this is, any ideas? Please don't let it be anything catastrophic or expensive!