P1812 Ford -

Question

What is this code mean is it a bad module?

Answer 1

P1812 The vehicledoes not shift between 4-wheel drive auto and 4L correctly

P1812 deals with the MSS (mode selector switch),Brake pedal switch, TR (transmission Range), Transfer case motor and relay, If either one of these are open shorted or grounded you get code P1812, These should be tested before a module is replaced,this include the harness too.