Check Engine Light Codes.. Need Help from Diagnosis minded

[myeclipseisnice]

ok i have 3 codes... i know that one can trip the other but can someone help me out...

P1500 - Generator FR Terminal Circuit Malfunction
P1400 - Manifold Differential Pressure (MDP) Sensor Circuit Malfunction
P1105 - Fuel Pressure Soleniod Malfunction
Ok my mods are on my profile... my SAFCII is at -12 all across on high and low. Im at 16.5 psi on my EvoIII 16G.

Now if someone reading this is good with fixing these codes.. i have how to fix descriptions on each code, but i dont understand them. (mechanic terms). Look Below. i only typed the descrpition for P1500, i do have the other two...

P1500 - Generator FR Terminal Circuit Malfunction...
1. With generator field connector connected. Check voltage between ground and field connector terminal No. 4. Ensure radiator fan is off. In sequence, turn headlights, stoplights and rear defogger switch on and then off. Voltage should drop .2 - 3.5 volts with accessory on. If voltage is not as specified, go to next step. If voltage is as specified, replace PCM.
2. Disconnect generator field connector. Turn ignition on. Check voltage between ground and field connector terminal No.4. If voltage is 4.8 - 5.2 volts, check field connector, and wiring harness between PCM and field connector. If connector and wiring are okay. replace generator. If voltage is not as specified, check PCM connector, junction connector and wiring harness between PCM and field connector. If wiring and connectors are ok then replace PCM.

thanks...

[justin0469]

the your MDP sensor is on your intake manifold, should be on top. if you have a 6bolt, there is no place on the 1g intake manifold for the 2g sensor so its just hanging there. make sure your vacuum line didnt come off your fpr for the fpr code

[myeclipseisnice]

Originally Posted by justin0469

the your MDP sensor is on your intake manifold, should be on top. if you have a 6bolt, there is no place on the 1g intake manifold for the 2g sensor so its just hanging there. make sure your vacuum line didnt come off your fpr for the fpr code

can you tell me more in detail were the MDP sensor is... where on top? how does it look like? i have a 7 bolt. and as far at the vacuum line for the fpr where is that located? by the fuel rail?

[justin0469]

http://www.dsmtuners.com/forums/atta...id=34269&stc=1

thats the MDP sensor.

Your FPR is on the drivers side of the fuel rail and there should be a vaccum line hooked up to it.

[myeclipseisnice]

my mdp sensor is still on and my vacumm hose is still attached to my fpr... any other ideas?