Lexus SC430 :: 2003 - Can Low Battery Cause Check Engine Light?
About month ago, the CHECK ENGINE, VSC, and VSC OFF lights came on in the dash of my '03 SC430 (~175k miles). Took it to the dealer and they read the codes; indicating a bad O2 sensor. They replaced it, and the lights went off. A few days later, the lights came back on. The lights remained ON until this past weekend.
On Sunday, i went to start the car in the morning and the thing wouldn't turn over. Turns out the battery was dead. The label indicated it was 5yrs old. So i bought a new battery. After installation, i noticed the error lights were no longer illuminated on the dash, but just figured it was due to the fact that the battery was disconnected during installation. But after driving it extensively since then, the lights have remained off.
Something else i've noticed since installing the new battery is the lack of the "rotten egg" smell from the exhaust. Before the change, i noticed a significant decrease in acceleration and the emissions smelled very bad. But for the past few days, i've noticed a dramatic increase in power and cleaner smelling emissions. Not sure if they're related...
Could the check engine lights have been the result of my battery dying? I'm not sure why they haven't come back on since the battery replacement. Nor a reason why i'm noticing improved performance and better smelling emissions.
Lexus SC430 :: Replaced O2 Sensor Three Times - VSC And Check Engine Light Comes Back On
I have a o3 sc430 that's driving me crazy I have replaced the 02 sensor on my car three times and the cars vsc and check engine light comes back on after driving less then a mile. If I really step on the gas it'll come on faster. Where should I look for a vacuum leak? The mechanic says it could be electrical problems too...
View 14 RepliesPrius (2004-09) :: Check Engine Light Turned On For A Few Hours Then Turned Off
I always take care of my car oil changes on time. And in the last week my check engine light turned on for a few hours then turned off. And today it turned on again. I kinda regret getting rid of my scan gauge now.
View 11 RepliesLexus SC430 :: Auto-Leveling Warning Light Came On When Headlights Turned On
So, driving home from the meet & greet in DC yesterday and when I turned on the headlights, the auto-leveling light came on. It randomly came and went for a bit but was on continuously by the time we got home. Headlights work and are at the correct height. Lights cycle up/down when the key is turned. Other than the warning light, it appears to be working normally.
Of note, this was the first time using the lights after the airbag actuator recall last week. Not sure how it could be connected unless it is a dash connection issue. If not,how to isolate if or which sensor is causing the issue?
Passat (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 RepliesPrius (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 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.
Lexus GS 2006-11 :: Check VSC On Dash Traction Control Light And Check Engine Light Is On
I was driving home and all of a sudden my rpms are at 3.5 4k rpm wont shift to next gear. I put in in tiptronic mode and shift it to 8 it works fine. Then about 10 minutes later check vsc shows on dash traction control light is on check engine light is on and the light next to the check engine i think it is the abs light. I havent pulled the code yet.
View 1 RepliesLexus SC430 :: Engine / VSC Light Came On
So I went on a little trip about 500 km away.. when i got there everything was normal.. next day while hanging with my buddies my Engine light, VSC and VSC OFF light came on.. I wasn't pushing the car or anything, driving normal and going around 120 to 135 kph on hwy there. Usually people would panic but in the past I have had cars that got these lights and usually its just a sensor.
I mean the car drives perfectly normal, i have driven it 900 km after the light, the temperature doesn't rise, there is no leaks anywhere, there is no smell, engine oil is all there, everything seems perfectly fine. I read a few threads referring to the oxygen sensor? I am thinking of getting that replaced.. how many are there that I would have to change? Also someone mentioned ABS sensor in another thread.. not sure what that has to do with the engine, i mean ABS has its own light right?
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.
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