Prius (2004-09) :: 2008 - Getting P1121 / P1116 - Replaced Coolant Control Valve And Red Triangle?
May 23, 2014
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.
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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.
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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?
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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.
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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.
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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.
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The P1116 and P1121 codes have shown up on my 2009 Gen II Prius about a month ago. The CEL is intermittent - it will disappear on its own within a few drive cycles to a week, only to come back again. I'm not sure what to do next - should I go ahead and replace the three-way coolant valve or water pump or both?
Of note I also hear a "push-pull" noise from the engine compartment. Sometimes it persists through an entire drive (my trips are usually short, under 30 minutes) or sometimes it will only happen upon a cold start then stop after a few minutes of driving. What the noise indicates? It sure sounds like some sort of valve or piston opening and closing. It's faint so I've "enhanced" it to make it louder.
Apparently I can't upload .wav's here, so I placed it on dropbox. And since I only have one post, I can't directly link to it. So I will post three replies in order to paste in the link.
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Just last week I bought a 2007 prius from a local dealership in Houston. The check engine light recently turned on and had it checked out by an auto parts store. The codes they read were the p1116 and p1121 (issues with the coolant valve). I know it would cost much to replace the valve, and I am not wanting to pay that much, especially since i just bought the car. I'd also be willing to fix it myself if i had some guide or step by step instructions...
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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.
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I've got our beloved 2005 Prius giving us the dreaded CEL with these two codes: p1116 and p1121.
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I had the red triangle pop up on my Prius. I codes I got P0A93 and P1121 I needed a new control valve and inverter water pump. I installed both the valve and the inverter pump filled it with new coolant and bled both systems.
I went into maintenance mode so I could run the motor and bleed out all the water. My question is the red triangle is still on in my car when I start it up.. Is there some way to clear the red triangle or does it just go away on its own? Not sure what to do.
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I have a 2004 toyota Prius with 185k miles on it and recently got the CEL for P1121. I checked both coolants and turns out that the engine coolant was completely out. I immediately filled it up and the CEL went off for a couple days. It has come back and is on constantly, I checked the coolant and the coolant is at the correct level.
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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).
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On my 05 Prius (65K miles) I recently had my local Toyota dealer replace both the inverter water pump (for free per recall) and main engine water pump (~$500 based on their recommendation because of some coolant leakage). 1 week later, I got the P1121 code coming off and on intermittently.
My dealer says that the work they did is not related to P1121.
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For several months now, my 2007 Prius has been making an intermittent buzzing sound from the engine bay. When I first heard it, I thought I had hit the little lines they cut into the road to let you know you've drifted over the center line - the sound is like that, a low-pitched buzzing noise. Today, the check engine light came on as it was making that noise. I put a code reader on the car and got P1121, a bad coolant flow control valve. Wondering if the sound and the faulty control valve are just coincidental or if the valve might make that noise when it fails? And if not the valve, what the sound might be?
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So I received the P1121 and took it to the dealer. They told me I also had a P3000. I called another dealer and they said the P3000 could be caused by the P1121 not giving it enough coolant. So I brought it back to the house, bought the valve listed in the forums, and I spent all day changing that + the coolant. I drained the coolant and between the reservoir and the radiator cap itself I refilled about 4 QT, and I saw that my inverter coolant was just below the low line, so I filled it up to the full line. Afterwards, I tried to get the coolant to flow, and it seems like I won't flow. The check engine light immediately came back on and the car said, "Problem." So I immediately shut it off and let it set for a few days. How do I get it so that the coolant starts flowing again. I haven't seen any of the levels move whatsoever on the radiator.
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I got red triangle and headlight icon on the screen. I hooked OBD and It gave me error code P1116, I checked all my front, back lights are working fine.
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Bought my Ranger brand new, and I try to maintain it well. Most of the 90,000 miles are highway. Anyway, the OEM coolant was supposed to be good for 100K miles, but since I hadn't done anything in 89K, i have a lengthy commute and the coolant was getting discolored, I figured that no harm would come in having a drain/refill. This was approx. The heat worked flawlessly. Fast forward two weeks, and my local shop performed an oil change (not the quick lube that did the coolant replacement). I was informed of three things:
1) my coolant was low,
2) my heater control valve was leaking (which I was shown), and
3) when hoisted I was shown that a slight residue of coolant -- not necessarily fresh -- was on my water pump.
I was told that 'down the road sometime a water pump could be in my future'. Again, the heat worked flawlessly, and I didn't want to be out-and-about in winter and run out of coolant. So, the shop replaced my heater control valve and topped off the coolant (approx. 1/2 - 1 gallon). Heat worked flawlessly. The last couple days, I noticed two things.
First, heat trickles out on low and medium setting, and second, it takes a long time to warm the vehicle. So, my limited research tells me two things. If coolant is present, and I have heat (of some sort), then, the water pump and heater core are probably fine. Diagnosis says to check the thermostat first, correct?
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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.
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I had the PCV valve replaced around 60K, then at the next service they wanted to do it again (not reading the records that they had already done it). Then at 80K they wanted to do it again, I declined. Today it was in for 85K service and they said "the PCV valve is dirty and needs to be replaced." The advisor told me after the initial replacement at 60K the interval is 20-25K miles.
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Yesterday the check engine light came on in my 2006 Prius. I took it to the dealer, and they said that the camshaft gear and valve cover need to be replaced. Specifically, the diagnostic report says "P0011. Camshaft position A timing over. Advanced or system performance bank 1. Pin point check LED to CUV gear not switching."
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