Prius (2004-09) :: Code P1121 - Coolant Flow Control Valve Position Sensor Stuck?
The check engine light on my '05 Prius has gone on and off a couple of times and is giving me a P1121 code, which I found out means "Coolant Flow Control Valve Position Sensor Stuck". Does this have anything to do with the hybrid electric coolant pump that was replaced under recall a while back?
View 5 RepliesPrius (2004-09) :: Code P1121 - Coolant Flow Control Valve Position Sensor Stuck
It's been a long week for me and my 2007 Prius. Brought it to the dealer after receiving my first ever CEL. I have 222,000 miles on the vehicle. The a/c was also blowing warm when the CEL came on. They checked that and told me that the compressor was "breaking up." Then they call me back to tell me that my 12V battery died. They asked me if I had problems with starting the vehicle. I said never. Never had any issues with the car in 222,000 miles.
Well, told them to replace the battery (no choice) and the car is 5.5 years old in Florida heat so it was ready to die. Very suspicious that it died while they had the vehicle, but what can I say. Told them to not repair the coolant flow valve or the a/c until I could investigate further on my own. CEL is now off. The a/c is blowing cool again.
Prius (2004-09) :: Check Engine Light Throwing Code P1121 For Coolant Flow Valve
My check engine light was throwing the code P1121 for the coolant flow valve. Toyota replaced it under a warranty enhancement (I have 134k on it), and since then my mpgs have gone from 46 to 50.
My AC is working much better now, too. My theory is that the valve can be in a semi-failure mode for a long time before throwing a code. Now that My coolant is flowing the way that it should, heat is being dissipated more efficiently.
Prius (Gen 2) :: Overheat Light Coming On After Coolant Flow Control Valve Replacement
I was getting a check engine light with a P1112 code, so I had a mechanic replace the coolant flow control valve. There's a TSB on that and it seems to be the thing to do. But after the replacement, I'm getting overheat warning light whenever the engine needs to work hard. Also, the cabin heater only works when the gasoline engine is not running... when the engine is off, I get heat (though it's not as hot as I'd think when I have it on max heat), but when the gas engine kicks in, the cabin heat disappears.
View 8 RepliesPrius (2004-09) :: Coolant Flow Valve Code 1121 With CEL On
I have read all the posts pertaining to this code, replaced my coolant flow valve, bled all the air out of the coolant system and still am getting the cel with the 1121 code.
I have tried setting multiple coolant flow valve positions, checked all wiring in harness, coolant level is full in rad and reservoir, checked temp sensor at bottom of storage tank, checked pump operation at top of tank to attempt to clear this code to no avail.
Is there a default position the valve is to be in before cold start up?
Is there anything else that can trigger this code? What am I missing?
Prius (2004-09) :: Check Engine Light Just Came On - Coolant Control Valve Sensor?
My wifes 2008 prius check engine light just came on. Its the control valve sensor. My question is, does that have any serious impact on safety? I've heard mixed on what this valve does (overheating etc).
View 6 RepliesPrius (Gen 2) :: 2004 - Red Triangle After Coolant Control Valve Replacement
2004 Prius, 98K miles ... I recently replaced the coolant control valve (received code P1121) and added coolant. Trouble codes were cleared. I am now getting the red triangle intermittently. When I drive the car, after a few minutes, the red triangle comes on. I can shut off the car, and turn it back on, and the red triangle comes back after a few minutes. The car seems to drive normally.
View 3 RepliesTown Car :: Buzzing Sound Under Hood - Can Idle Air Control Valve Be Cleaned?
I have been getting a buzzing sound under my hood, usually in cold weather that lasts a few seconds, happens after I go about 1-2 miles from my house, did online research and it might be my IAC valve getting internally dirty.
Could replace it for $50.00, some You Tube videos show people cleaning theirs on other brands of cars, can the Ford IAC valve be cleaned up with a little carb cleaner and cotton swabs?
Prius (2004-09) :: 2005 - Code P1121 / Coolant Valve Control
i have a 2005 Toyota Prius that the air conditioner wont work in. it has Freon in it the compressor wont kick so I did some research and my cooling fans aren't kicking on so I did a by pass test and the cooling fans motor is good they just wont kick on. I just replaced my 2 cooling fan relays and they still wont kick on. the check engine light was on in the car when I got it. it throws the code P1121 coolant valve control. I got the part just got to get it put on. Could this part stop my cooling fans from kicking on or my ac compressor from coming on.
View 3 RepliesPrius (2004-09) :: 2008 - Getting P1121 / P1116 - Replaced Coolant Control Valve And Red Triangle?
So I drive a 2008 and a couple months ago I started getting the Check Engine Light. Codes P1121 & P1116. Found out it was most likely related to a faulty Coolant Control Valve or Electric Water Pump. Since the pump was just recently changed I went ahead and got the valve changed.
The light is still coming and going but now when I go on the expressway that red triangle with the exclamation pops on with a little beep. Only pops on for a couple seconds and keeps coming back until I drive a bit slower.
Prius (2004-09) :: Sloshing Sound From Behind The Dashboard - New Coolant Valve
We've gotten quite a bit of rain in the LA area over the last couple of days and I noticed today that sometimes when I start/turn-off the car I hear what sounds like a liquid sloshing around behind the dashboard. Reading on the boards it sounds like a clogged A/C drain, but as it happens I just had the Coolant Valve replaced yesterday (after CEL came on with a P1121 diagnostic code) and so I wanted to check in -- could this be at all related to the new valve OR is it likely just a coincidence?
View 10 RepliesPrius (2004-09) :: 2009 - Check Engine Light Came On / Coolant Valve Replacement
I have a 2009 Prius and the check engine light came on last week. I decided to take it to a highly recommended auto repair shop instead of the dealer. The error cord was P1121 and they replaced some kind of coolant control valve. When I went to take the car home I noticed the check engine light was still on and they said there was another similar but different coolant valve that needed to be replaced. They replaced the other part and everything seemed fine.
View 10 RepliesPrius (Gen 2) :: 2014 - Check Engine Light On / Idle Air Control Valve Control Circuit
The check engine light came on yesterday. 2004 with 115K. Auto Zone read the codes and they are as follows:
Definition:
Idle Air Control Valve control circuit.
Probable Cause:
Open or short circuit condition.
Poor Electrical Connection
Failed IAC motor
Prius (2004-09) :: Water Flow Sound After Turned Off Car?
I just get my water inverter pump changed yesterday and what I have noticed now every time I power off the car, I can hear water flow. I did not hear this kind of sound before. What could be the problems with my car now?
View 12 RepliesPrius (2004-09) :: CEL Along With Code P1121 Coolant Valve Came On
What is the to cause to check engine light go off. I will take my car to auto zone tomorrow morning to hopefully get a code and see if I can fix it myself... if not, then I am going to have to go to the dealership.
View 19 RepliesPrius (2004-09) :: Loud Buzzing Sound If Car Is On Or Off
I have a 2nd generation prius and up now no problems but today my car continously makes a pretty loud buzzing sound if the car is on or off. No lights are on other than the maintenance reminder light as I currently have 57000 and waiting a little longer before I bring it in for the 60,000 check up.
View 4 RepliesPrius (2010-12) :: Buzzing Sound From Engine When Door Opens
I have a 2010 model and have had this issue for the past year. When I open the drivers door I get an immediate buzzzzz sound from the engine that can last 10 to 30 seconds or so. What is this???
I believe it is somehow associated with ignition issues This last winter (in Texas) I have had to push the start button sometimes several times before the engine would startup. I brought it into the dealer and left it overnight. Of course there were no problems when they started it the next day. Anyway, I have noticed a worsening of startup problems (none in the summer) along with an increase in this buzzzzz sound. Is it just my imagination?
Prius (2004-09) :: Loud Buzzing Sound When Press Down Brake
My 2006 Prius with 206k miles is making a loud buzzing/grumbling noise when I press down the brake and periodically when parked. It's coming from the general area of the brake pedal, under the steering wheel. See video for a recording of the sound:
View 2 RepliesPrius (2004-09) :: 2006 - Buzzing / Grinding Sound When Turning
In the past few days, our car (2006 Prius) has begun making some louder-than-normal noises while driving. I've determined that the noise appears when you turn the wheel at all to the right (note: not just making a right turn...any degree to the right past straight is enough). It seems to be constant when the car is running, but really only becomes perceptible around 30 mph. The sound is sort of like a buzzing. Maybe a grinding, but not quite. It sounds like it might be similar to this issue (2006 Engine Noise - buzzing, especially loud on highway | PriusChat), but I can't quite be sure.
View 4 Replies