Evap Canister Solenoid connector
 

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Evap solenoid connector 1
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Evap solenoid connector 2
I am trying to release the electrical connector on my evap canister solenoid but it won't budge. I have tried gently wiggling and tugging it. There is a red tab on the bottom that was pulled out when I first tried to disconnect it. I thought it was likely already released but it wouldn't move. So after tugging and gently prying with a thin screw driver with no results I pushed the red tab upward to see if that would release it. Now it seems locked. It won't release. Is there a special tool to release these connectors or some technique to get them to release?

That worked. I do appreciate your reply.

Once I got the connector off I tested the solenoid and it clicks like it should. I have the P0449 code. Since the solenoid is working could it be that it's just filled with dirt and blowing it out might get rid of the code?

I would just replace it, they are cheap. Be careful with the sealing grommet, it is important.

The P0449 monitors the circuit, not pressure. There is something wrong electronically. Pretty much guarantee it is full of dirt.

A low battery could be the cause it MUST be above 11 volts.

Do you have away to test the plug current ?

It should be always hot the computer controls the ground.
(I corrected myself; it is not PWM)

I do have full battery power. It shows 12.15 volts.

I did test the wires coming from the ECM to the solenoid using a multimeter. It didn't show any current with the ignition on or off but I may have tested it wrong. I contacted one multimeter probe to one side of the connector and the other multimeter probe to the other side of the connector. After researching I think the correct way to test the wires is to connect the positive probe on the meter to each side of the connector separately while grounding the other meter probe to the chassis. If this is not correct please let me know. I have not tried it yet.

Could the solenoid be bad even if it clicks?

I got the P0449 code after accelerating quickly to get into traffic. It came on as soon as I sped up. Could it be that the quick thrust snapped a wire or loosened a connection?

Uh. 12.15 volts is NOT a full charge on a battery. That voltage is considered undercharged.
Should be in the 12.7 volt range.

Is the voltage deficit enough to cause the code?