Ford Mondeo Estate - Anybody had error codes P1263 + U0401:68-8A ? - GART

I have a 2012 Mondeo 1.6 TDCI only done 50,000 miles it has gone into limp home mode. I have scanned with Forscan and get the above codes, I looked up the codes and get :-

"P1263 Description A fault is detected by the fuel injector interface module in the secondary (rearward) fuel injector circuit”

Can anybody explain that in simple language?

I have contacted my main Ford dealer who said:-

"These DTC codes mean nothing to Ford dealers, code reader not compatible to FMC DTCs.

Fuel pressure switch ? Injector ? Pump ?"

All these are major components which I would expect to last more than 50k miles. Is there any way I can get a better diagnosis without paying Ford main dealer £100 just to tell me what is wrong.

Ford Mondeo Estate - Anybody had error codes P1263 + U0401:68-8A ? - RobJP

I suspect a proper code reader, and someone trained and competent in it's use, is what's required here.

App-based and cheap (or free) code readers are cheap (or free) for a reason.