ON/OFF again Check Engine Light

So, as my first post about my headlight issue stated, I don't know hardly anything about cars. The deep details anyway. Anyways, a little less than a month ago the "check engine light" came on and I panicked. Lit up orange, not red and it was flashing, just a stagnant orange check engine light. I tried do some research and found that the gas cap was the majority reason why it tends to go on.

I checked my gas cap, and I thought it seemed lose by what it seemed like a simple screw off. So I screwed it back on and made sure I heard the couple clicks. After about 2-3 runs and turning the car on and off the light disappeared, thank you jebus!

The next day, was driving and it came back on. I didn't even mess with the gas cap...over the next period of days, it turned off..then turned on again. Has anyone, anyone at all experienced this? I have a check engine light that doesn't know what it wants to do.

Thanks in advance

 

I know about the code reader, waiting to get it from a family member. Just wanted to know if this happened to someone else to what I might be finding out.

 

Pulled the codes today... Had a scare while coming home, the Exclamation point triangle came on for a couple secs, then went away. Did this about three times. I was about 20 minutes minutes from home, I stopped turned off the car, checked under the hood, no smoke or smell. Jumped back on the freeway and it came on again, this time I glanced at the screen and the little temperature icon came on in the corner, again, the light went off. Got home and pulled the codes, my father in law looked under the hood and the cap to the coolant wasn't screwed on so he screwed and tightened it. The codes came up P1116 COOLANT TEMPERATURE SENSOR (CTS) CIRCUIT STACK FOR COOLANT HEAD STORAGE SYSTEM & P1121. COOLANT FLOW CONTROL VALAVE POSITION SENSOR CIRCUIT STACK. It would be more than awesome if the codes and light problem were just due to the cap basically being off, but I have a feeling it isn't that simple. One can hope right? So, does anyone have any experience in this? Thanks in advance!

 

I can tell you the miles are high, We bough the car used from the toyota dealership Mar 12 and the milage was 174,ooo something. Yes I know, the miles are high. But the car has not given us ONE problem until this. The cap is on the passanger side, silver one almost under the black plastic hood accesory, basically near the light. Checked coolant and it seemed a little low. But I have a question, there are two yellowish jugs, one is near the top by the motor filled with pink stuff and that's not low. Then the other similiar yellow jug container (the one thats next to the coolant cap), took off the cap, and the pink stuff isn't anywhere to be seen just looking in the hole, are these two jugs one in the same? Both coolant containers, one for the electric motor and one for the regular?

 

So my question is, once I refill, am I pouring the coolant into the one with the silver cap or right into the one with the black rubbery one? I know, it's a stupid question, but this is MY first car I can call my own and a hybrid at that. I'm use to my 88 toyota camry.

 

Yeah I know, it's dirty. We live in a desert like area.

 

Yeah, that one I do know. JUst ran out!

 

A picture of the yellow jug? Cause the picture I posted is of the passanger side.

 

O.K, Checked all my caps to make sure they were sealed tight. As far as the coolant by the passanger side, I looked on the side and it's maybe a smidge below full but no where near low. Could those two codes ( P1116 P1121) been just because something was lose?