2006 Dodge Magnum "check engine code p1004 mean" Questions

check engine code P1004 Diagnostic test done when check engineLight illuminated. code P1004 shown. what does that mean? Took a while to find it but looks like it is the Mass Air Flow sensor

check engine light on. 1004 means you had a disconnection or flat battery. 0016 crankshaft position sensor has no/poor signals. 0404 check the EGR sensor. Probably a bad connection in the engine loom.