Prius (2004-09) :: 2008 - Red Triangle With Exclamation Mark / Check Engine Light Turned On
This morning I started my 2008 Prius (approx. 31k miles) and found the big red triangle with an exclamation mark and check engine light turned on.
I drove my car <1 mile to a smog check station where they ran a diagnostic on it and came back with the P0A9C code.
A quick internet search turns up that this is "HYBRID BATTERY TEMPERATURE SENSOR "A" RANGE/PERFORMANCE."
Prius (Gen 1) :: Check Engine Light Turned On - HV ECU Malfunction
This morning, I tried to start the 2003 Prius and got a 'check engine' light and nothing. The cabin lights were bright so the 12V looked OK. After three tries, I used the VOM and measured 12.55 V on the battery. But the traction battery level looked unusually low.
So I tried again and it started. Using the ScanGauge, no codes were displayed. So I turned the car off and on three times and cleared the "check engine" light. Then I connected the Auto Ingenuity and read out:
P1636 - HV ECU Malfunction on the HV ECU to ECM bus.
C1213 - HV ECU Communication Circuit Malfunction between HV ECU and Brake ECU
P3002 - HV ECU Communication Malfunction on the HV ECU to Battery ECU
So it looks like there was an HV ECU problem that 'cleared while testing.' Certainly it makes sense to inspect the HV ECU connectors and re-seat them and clean out any debris.
Prius (Gen 2) :: 2005 - Check Engine Light Turned On
My 2005 Prius has 105,000 miles. The check engine light came on for the first time ever. Dealer will diagnose tomorrow. If it's the main battery, should I sell it?
View 3 RepliesPrius (2010-12) :: Check Engine Light Came On And Turned Off On Its Own
My check engine light went off last month and when I had it looked at my dealership they said it was due to the seal where the gas cap locks into I believe. Anyway, a week later my light went off again and now they are saying it is the charcoal cannister which I found out is very expensive. Here are my two questions. First of all, can I get this part replaced and installed at a non-dealership? My second question is since they reset my check engine light, it came back on a few days later for two days and then turned off completely. Should the light have turned off on its own? Should I be concerned that it is no longer on? It just makes me wonder if they diagnosed this issue correctly or not.
View 7 RepliesPrius (2004-09) :: VCS - Red / Yellow Exclamation And Check Engine Lights All Suddenly Turned On
While my car was idling in a CVS parking lot, the VCS, Red Exclamation in a triangle, Yellow Exclamation in a circle and the check engine lights all suddenly turned on.
In reading the forums, it seems the two most likely issues would either be the inverter pump (which I had replaced as part of the recall, and I see the fluid moving in the reservoir), or possibly a bad 12v battery (which I had replaced last year with the forum recommended Optima Yellow Top).
I checked for error codes, and there were numerous ones there at first, but I think that might have been related to the old 12v battery dying (I never reset after that). I cleared the codes, and no new codes are generating.
Passat (B6) :: Engine Stays Very Hot After Hours When Turned Off
Why the passat engine stays very hot after hours on turn off? We have a Touareg and the engine does not get that hot and cools faster.
View 2 RepliesCivic - Honda :: Engine Fan Start Running While Car Is Turned Off And Has Been Off For Hours
Is it possible for the engine fan to start running on my honda civic while the car is turned off and has been off for hours? My husband claims that it was so hot in the garage last night that the fan on the car started running. I think it was the house air conditioner that he heard, but he insists it was the car engine fan. I think he's up in the night!! So...is it him, or me, that's up in the night?!
View 8 RepliesPrius (2010-12) :: 2014 - Hybrid Battery Humming, Hours After Car Is Turned Off?
Today I went in may garage and heard a humming from the rear of my 2014 prius. I assume it is the hybrid battery. This was several hours after the car had been driven. I turned the car on and then off and the humming stopped. Is this normal? I know it is common for it to hum immediately after you turn the car off for a bit, but several hrs later?
View 9 RepliesPassat (B5) :: Check Engine Light Turned On Whenever Put Gas In Car
I have a 2001.5 passat and the check engine light turned on. It just so happens that whenever i put gas in the car.... and try to start it back up, it won't start! it takes about 3 or 4 tries for it to start up.
View 3 RepliesGolf IV R32 :: Check Engine Light Turned On
Bought an R32 yesterday. used of course.. was doing fine feels like a brand new clutch. got it from a ford dealership, and the check engine light just turned on. I will go back for the 14 day policy but i was wondering if it could be my clutch.
View 8 RepliesLexus SC430 :: Check Engine Light Turned On
My check engine light just turned on recently. Just hit 115K miles on my SC430 a few weeks ago. Is there a service that I'm missing? Running absolutely fine, oil change recently as well.
View 14 RepliesToyota - Highlander :: Check Engine Light Turned On At 102,000 Miles
My check engine light came on at 102,000 miles. The dealer service dept. says that the diagnostic showed no clear cause(?)but I need new spark plugs ($240),ejectors cleaned, and of course the cost of the diagnostic ($130) The total was around $475. Am I being ripped?? My big question is what will they do to get the light out?? Should I disconnect the battery and reset the clock and radio buttons to see if it goes out? Then I can worry again if it comes back on.
View 30 RepliesHyundai - Elantra :: 2007 - Check Engine Light Turned On
I have a Hyundai Elantra 2007 with 123,000 miles on it. Three weeks ago the engine About two weeks ago the engine light turned on. I took it into an auto parts store so they could use the digital code reader, it said the upstream O2 sensor needed to be replaced. I replace it and still have bad gas mileage, the second time I had it read with the code read it said both of the O2 sensors were bad so I replaced the downstream one week later. There was still bad gas mileage and the code reader still said it was both of the O2 sensors, the auto part's representative said when the engine light is on that the computer turns off the O2 sensors so he recommended to erase the codes on my car with the code reader (I pushed the button and he looked away). Still nothing changed so I disconnected the negative terminal on the battery to restart the computer. Still horrible gas mileage with no engine light anymore. Gas mileage averages about 15 mpgs in city and 32-35 on the highway. The highway seems about right but I've never seen any mpg below 30 for city mpg before this problem. I also cleaned the mass air flow sensor with mass air flow cleaner after dealing with the O2 sensor. All preventive maintenance is kept up by me and I have had no problems with this car before. Water pump replacement, timing belt replacement, and transmission flush have occurred in the last ~50,000 miles.
View 19 RepliesChrysler - Lhs :: 1994 Check Engine Light Came On When Key Turned But Goes Out When Car Started
My mother in-law has a 94 Chrysler LHS, 3.5 V6, auto, 66k. Yesterday she was driving home and said the check engine light was on. I went to check it out and the light was not on. The light come on when the key is turned on but goes out when it is started. This is not an OBD-2 car it has a little blue plug and i do not have a code reader for it. Took it to auto zone and they do not have a code reader for this car. Auto Zone and Pep Boys both told me that if the light is off there will not be a code. Further checking on the internet I found out you can get a two digit code by turning the key on and off and count the flashing check engine light. It worked I got code 12 and 51. 51 means lean O2 sensor. If this is true that why does the CEL not stay on. How can I test the O2 sensors?
View 2 RepliesPontiac - Sunfire :: 2002 - Check Engine Light Turned On Again?
Check engine light issue. For the past 3 months, my check engine light has been turning on. The first time it happened, the garage replaced the EVAP Purge Solenoid (which includes the vapor can purge solenoid and the EVAP canister purge solenoid). Of course, a few months later, the check engine light turned on again. The second time, the garage replaced the gas cap. Then the check engine light turned on again the next day.
So, the third time, the garage performed maintenance/repair on the vapor can purge solenoid and the EVAP canister purge solenoid. Of course, three days after driving my car, the check engine light turned back on. I've contacted the garage for the fourth time now. I explained that their diagnostics have obviously been exhausted, and they aren't really sure what the problem is. I'm going back in a few days to speak to the lead mechanic hoping to be compensated for their guess-work or at the least to be given an honest "I don't know" answer.
Ford - F150 :: 2001 - Check Engine Light Turned On
I have a 2001 Ford F-150 v6 2wd. A few weeks ago, the check engine light turned on so I drove to the nearest autozone to hook up their computer and see what the error code was. The technician gave me the code (I don't remember it off the top of my head but it wasn't something imminent). Before leaving, I asked him if he could clear the light, figuring that if it didn't come back on after 50 miles, that it might have just been a fluke with one of the truck's sensors. Later that day, I realized that when I started the truck, the check engine light was no longer turning on momentarily the way that all the dashboard lights do to tell you that they're working.
I went back to a different autozone (one closer to my house) and explained the situation. They checked the computer for codes again and found none and said that the light must not be turning on because the bulb is burned out. I find this to be a striking coincidence that the bulb should happen to blow out exactly when the technician used his computer to clear the light. Is it possible that he did something with his computer that permanently disabled the check engine light? It's been a few weeks and I've since bought an inexpensive bluetooth code reader of my own, hooked it up, and found that there is still no active code. Is it possible that the code has returned or will return, but that I won't have a way to know because something he did suppressed not just the light but my car's code reporting mechanism?
For now, the truck drives fine, but I'm afraid to travel long distances when there might be a problem I don't know about.
Saturn - Vue-hybrid :: Check Engine Light Turned On - Code Says POAC
I have a 2007 Saturn vue hybrid that has the check engine light on-the code says POAC. I can't find anything on the Internet what this code means. I'd like to fix it myself instead of bringing it to a dealer and getting charged big bucks! What this code means?
View 3 RepliesAccent RB (2012+) :: Check Engine Light Turned On / Code P2196 Always Comes Up
I love my car 2012 Hyundai Accent GLS but once it hit 60K miles, the engine light came on and it has been eating gas. I get up to 160 miles per tank now. My MP fluctuates from 12-25 MPG. I literally watch it jump when I fill up the car, then a few miles later, it drops again. Code P2196 always comes up. (stuck rich)
Dealer advised me to do fuel system flush.
Dealer replaced upstream o2 Sensor
Dealer replaced Check Valve
New Spark Plugs last Fall due to hearing really loud spark knocking... and also re-gapped last week. Now I can hear them slightly again.
Engine light just came back on after almost 200 miles.
Reading some other threads- apparently this seems to be a known issue for my car.
I am wondering if I should try replacing the downstream o2 sensor.... OR consider trading my car.
Elantra XD (2001-06) :: Check Engine Light Turned On - Codes P0422 And U0D00
While on my 20 mile commute my check engine light turned on, attached the code reader to the car and got codes P0422 and U0D00. Looked up the P0422 code to find "Caralyst efficiency below normal (bank 1)" I have a list of possible fixes but have no luck finding out about the U0D00 code. I notice I lose and a quart of oil every month and when I start the car, the first 5 seconds or so the engine revs to 4000 rpm.
View 1 Replies