I'm rebuilding an 07 base model. Just got it running but the engine light is on. I scaned it and it says Evap Emmisions sensor pressure low. Also Sensor A sample voltage circuit open. Or something like that.

For what I have done. I did have to repair the frt harness that goes to the headlights ect. but no damage to the engine harness. There is a solenoid deal on the intake that appears to be for the EEC since a line runs from it back under to the tank. The nipple got broke off on it & I replaced with one from my 04 parts car but the same code appears. Also, I don't have the headlights, parklamps, horns, washer pump ect hooked up. I can't see where those would effect the engine but I'm basically a body guy.

Any ideas on why I have the engine lamp on?