P1400 Manifold Differential Pressure Sensor circuit.
P0443 EVAP System Purge Control Valve circuit.
P0446 EVAP System Vent Control.
P0403 EGR Solenoid.
P1104 Turbocharger Wastegate Solenoid.
P1105 Fuel Pressure Solenoid.
P0300 Random Misfire Detected.
P1400 Manifold Differential Pressure Sensor circuit.
The other ones you typed down are repeating.
Ok, what Tb are you running? 1g, 2g or stock Galant TB? Im asking because it matters I think 2g and Galant's TBs are internally not routed the same . It looks like theres big mess with the three vacuum line from the TB to all emission valves and controls.
P1400 and P0403 are connected since the MDP checks if the EGR works.
Make a little diagram of where the three vac lines go and post it then we figure it out.
Also, there might not be a power going to them( a wiring flaw)
The random misfire code is from the 1g CAS, and the wastegate and fuel pressure solenoid codes - theres nothing else to do, but go to the j/y get 2 solenoids and wire them in, you dont have to use them
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