Normally it doesn't mean anything. The P0603 is set anytime you disrupt the continuous memory. Installing a tuner, disconnecting the batteries, that sort of thing. Normally nothing to worry about.
__________________
Scott - FTE moderator
01 F-250 Lariat, 7.3, ZF-6, NV271, -38R, SII splits, DI tunes, Custom fuel, 5" stacks, IDM140....and more little mods than I can remember.
79 Bronco- 7.3 IDI diesel project truck - AWM
01 F-250 Lariat, 7.3, ZF-6, NV271, -38R, SII splits, DI tunes, Custom fuel, 5" stacks, IDM140....and more little mods than I can remember.
79 Bronco- 7.3 IDI diesel project truck - AWM
