P CODES (POWERTRAIN) P0100 - P0199 P0178 Questions

I Noticed A Few Times While Driving When I Would Hit The Brakes, My Rpms Would Drop To 0 And Car Would Go In A 'stall" Meaning The...

Originally, I Had My Car Scanned And Received The Codes 'p0178-00 Fuel Composition Sensor Circuit Low Frequency' And 'p2119-00...