On my 1995 Ford F350 7.3L what are the codes P1111 and P0603?

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Reynaldo · Answer 1 · 2017-01-31T07:42:06+0000

P1111 System Pass

P0603 KAM (keep alive memory) memory failure

Keep alive memory failure can happen when the battery is disconnected,

OBDIITech · Answer 2 · 2021-07-19T17:13:38+0000

P0603 FORD - ECM Keep Alive Memory Test Error
Read more: https://www.autocodes.com/p0603_ford.html

P1111 FORD - CAT System Fault
Read more: https://www.autocodes.com/p1111_ford.html