I have had this code forever. It tells me that my map is bad, I have replaced it 2 times. I have also replaced the EGR vaccume solenoid with no luck. Any ideas on why I keep throwing the, barometric pressure sensor code? And any ideas on the size of wrench needed for nut on the back tube of the EGR? Also get to replace my heater core before the winter. Please help, I am way past expired.