Question about Cars & Trucks
Only got that one code p0693
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Posted on Jan 02, 2017
P0603 means Internal Control Module Keep Alive Memory (KAM) Error
In other words, that code is set when the PCM loses "keep alive" memory B+.
This code can also be set if the batteries went dead at some point, but mainly it means there is an open circuit detected in the KAM circuit.
On a '97 F-250, check for a 5 amp fuse blown in fuse cavity #2. If the fuse is blown, check for and repair the short-to-ground in circuit #729 (red with white coloured wire).
Good luck dear.
Posted on Jan 24, 2010
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