Just Curious
P0602
0605
1211
1690
0470
early '99, Kwik filter, shimmed fpr, 3.5" straight exhaust, 60 horse Predator tune
p0605- P0605 Internal Control Module ROM Error ???
p1211- ICP Not Controllable - Pressure Abow/Below Desired
p1690- Wastegate Control Valve Malfunction
p0470- Exhaust Back Pressure Sensor Circuit Malfunction
P0602 Control Module Programming Error
I don't know if it's a real problem or if it's simply as harmless as a P0603 which means you disconnected your battery at some point in time. I recommend you clear them out and go drive it for a while.

Here: http://www.svtlightnings.com/scantool/ford%20dtc%20codes.htm






