Lambda sensor again?

Had my lambda sensor B1S1 replaced in Oct 2015 with a P2196 error - signal too high (rich)

Just got EML and codes showing the following:

2 faults found: 008785 Lambda sensor B1S1 Negative Lead

P2251 - 000 Open circuit

004374 Lambda sensor Heating B1S1 

P1116 - 000- open circuit MIL ON

Any ideas?

Thanks