Elantra XD (2001-06) :: 2004 GT - Check Engine Light Keeps Coming On

I have a 2004 standard Elantra GT. I had to get an emissions test and the CEL light will not stay off. My garage replaced two valves in the fuel tank and the neck to the tank and have done numerous "smoke tests" but can't find the leak. Now they are saying there is something wrong with the computer. They got it to stay off long enough to pass the test, but the light's on again. I see that there was a recall issued because of the cracked exhaust manifold, I think I had the catalytic converter replaced up at the cottage.

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Prius (2001-03) :: Check Engine Light Started Coming On For Code P1636 And P3002

I have a 2003 Prius, I had an accident and after it was fixed the check engine light started coming on. It would go off after a couple of days. The first time I took it to Autozone and the codes were P3150 & P3130, but the next day the check engine light went off. A couple of days later the light came back on....went back off....next week it stalled on the highway, but it started back up, now the codes it's reading are P1636 and P3002. It still starts up and will drive, but I'm afraid to drive it.

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Elantra XD (2001-06) :: Check Engine Light Came On While Driving - P0341 Code

I own an 04 Hyundai Elantra with around 196,000 miles on it, and have run across a problem I haven't had to deal with before. A few days ago, my check engine light came on while driving. I didn't really notice much, but when I started it again it began idling roughly. I got it home and pulled the code, which was P0341 (camshaft position sensor). This isn't the first sensor I've had go on the car (I replaced an oxygen sensor and throttle position sensor a couple years ago), however I ran into two problems:

1. How likely is it that it's the sensor that's bad as opposed to something like the timing belt or VVT adjustment?

2. Since the sensor isn't horribly expensive, I decided to try replacing it, but I can't get any socket to fit on the bolt that secures it. I've heard it's a 10mm, but nothing seems to fit snugly. Maybe there's just so much crud and corrosion that it's ruined the head. I tried using an extraction socket, but no luck.

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Hyundai - Elantra :: 2006 - Power Loss And Check Engine Light Flashes

My girl friends car is doing something interesting, well it started off the car died while she was driving home from work, so I towed it with my truck home, the alternator had went bad so i changed that, but no here is where the problem comes in that i cant figure out, the car will start and run for about 3 miles than it will die in and out, loose power but not kill the engine and the check engine light flashes, and now the radio does not work at all (at idle or running) and the head lights are dim.i tested the battery, it was with in ranges for cold starting, output while the car is on and a few other thing, i re checked my belts and they are all tight and in the correct alignment ...

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Honda - Accord :: 1991 - Odometer Stopped Working - S Light Flashes - Check Engine Light Sometimes?

I am a grad student hoping my car will hang in there till graduation next year. I have about 227,000 miles on my Honda Accord Wagon and recently the odometer stopped working, S light started flashing, and the check engine light came on. This only happens sometimes, and the check engine light does not always come on when the S light flashes and odometer stops working. I've continued driving the car to see what happens and so far, no problems have come up. I have driven another 1000 miles and am hoping I can just ignore the problem and continue driving the vehicle since I am not in a position to fix it or get a new car.

Recently I passed my California emissions test and she seems to be running smooth. Any thoughts or warnings as to why sometimes these signals happen?

I have to drive with GPS on all the time to know my speed, but other than that I feel OK.

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Elantra XD (2001-06) :: Set Cruise Light Flashes On For A Fraction Of A Second And Then Goes Off

2005 Elantra Gt ... With a great car like this I hate to be whining about the cruise control but.... the cruise light goes on when the system is turned on, but when attempting to set the cruise, the "set" light flashes on for a fraction of a second and then goes off, and it doesn't set. I've owned this car for over 3 years and it used to work fine. After reading other comments and situations I checked the brake lights which seem to be working fine, and the fuse seems to be OK.

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Elantra GD (2013+) :: Check Engine Light Came On When Driving Down The Highway

I just purchased a 2013 Elantra GT, 3 days ago. I was driving down the highway and my check engine light came on. There is only 480 miles on my car! I know it's not a gas cap. I haven't even put gas in it since I drove it off the lot. Is there a way to check for the code thrown without a scanner? I use to have a jeep liberty and I could click the key over 3 times an the code would pop up.

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Elantra XD (2001-06) :: Blinking Check Engine Light

My Girlfriend just got a 2003 Hyundai Elantra and everything was running great on it the first month she had it BUT the check engine light was on.. After about a month she called me up while driving and said that the check engine light was blinking and the car would hardly move. So I got to the car and looked at it and I noticed the oil filter was a little loose so I tightened it good this time and added a little bit of oil. It actually moved but it would hesitate. So we had it towed to a shop and they read the codes from the check engine light and told us it was leaking oil from the motor some where (not specific) and it also needed a new O2 sensor.

So I replaced the catalytic converter underneath the car and also a new sensor along with a new set of spark plugs. It ran alot better and I left it at that. Now about a week later she was coming home and noticed that when she turned left or right that the battery light and brake light on the dash came on. She drove it home and when she turned in the driveway the car went dead. It started right back up and we got it to the house and left it over night. I went out this morning and again it started right up. but when I lifted the hood I noticed the belts on the pulleys were all spinning very slowly. I'm not sure if it could be a timing chain or if it just needs new pulleys.

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Elantra MD (2010-15) :: Check Engine Light Keeps Coming On After O2 Sensor Replaced

Check engine light came on about 2 weeks ago on my 2013 elantra gls. I went to auto zone to get it checked and they ran a p2096, which is what I had almost a year ago. That was fixed by dealer software update. So, I thought that was what needed to be done, headed to the closest Hyundai and they found p2096 and p2196. They replaced the o2 sensor bank 1, under warranty.

However, the next day the check engine light came on, less than 24 hours. Brought it back to the dealer, they said everything was within the correct "parameters" and said the light shouldn't come back on. On the way to work this morning, the check engine light came on, when the car was in the exact same spot it was yesterday.

I'm thinking the computer doesn't recognize the repair and needs to cycle a few times but I don't know. I'm so tired of going to the dealership because they are obviously missing something if the light is still on.

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Honda - Odyssey :: 1995 - Check Engine Light Started Coming On Every Time Drive On Highway

Recently the check engine light has started coming on every time I drive on the highway. At approximately the 5th mile of my ride, the light comes on but I cannot detect any symptoms, the car runs great. This rarely if ever happens when driving in the city, only on the interstate. My car is too old to be hooked up to the fancy diagnostic machine. What I should check to resolve this problem? 1995 Honda Odyssey with 279,000+.....

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Elantra XD (2001-06) :: Check Engine Light Is On For 2 P0501 Codes

I've replace the input and output transmission speed sensors on my 01 GLS. check engine light is on again for 2 P0501 codes. There is no abs speed sensor on the left side but there is on the right side which doesn't look like it is seated correctly. The transmission is still shifting kinda funny sometimes. Should I have abs speed sensors on both sides? And what else should I do to fix the random erratic shifting?

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Elantra XD (2001-06) :: 2004 - Hesitation And Check Engine Light Came On

I just bought a used 2004 Elantra that has 97,000 miles on it. When I took the vehicle out for a test drive it was smooth and quite. That was on Monday its now Saturday less than 300 miles later and the check engine light came on and it is having serious hesitation issues?! I am going to take it back where I purchased it from on Monday when they open but in the meantime I would like to know if its could be something simple?

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Elantra XD (2001-06) :: Check Engine Light And Transmission Fluid Little Low

My check engine light came on in my 2005 Elantra. During the course of trying to find out why I realized that my transmission fluid was a little low. I went to Walmart and got a bottle of the multi vehicle fluid the auto counter man said it needed. I did come online to check to see if that was the right fluid before putting it in and see that evidently the specs are very specific for what type of transmission fluid to use.

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Elantra XD (2001-06) :: Check Engine Light Brings 5 Codes Up

Have an 01 elantra as a second car and it's great. Just recently tho the check engine light came on and I've got a few codes that make sense since there has been some odd issues with it in the past month or so.

02 sensor CKT bank 1 sensor 2 (slow response)

shift solenoid D malfunction

shift solenoid C malfunction

shift solenoid B malfunction

Trans range circuit malfunction (PRNDL input)

So I know the 02 sensor needs to be replaced, that's fine. I'm more concerned about the rest of the codes because when cruising around 40mph the car tries to shift to 4th gear or something like that, it will bog down because the rpm is too low (maybe its overdrive, not sure).

That's a minor issue but has been there since we got the car over the summer, the bigger issue is the last couple of days, i've noticed that when driving the car around the city, slow down - turning - and then accelerating the engine/trans will buck harshly a few good times before it smoothens out, my guess is the gear change didn't go well.

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Elantra XD (2001-06) :: Check Engine Light (cylinder 3 Misfire)

As the title says I have plugged a code reader in and it says "cyclinder three misfire". So I pulled the plugs and good god they were nasty. Some having a gap of 80-90 thousandths of an inch. So I figured the plugs were the source of the problem, thus I replaced them but to my dimise the check engine light is still on, and still reading the same ol' "cyclinder three misfire". I have put 350 miles on it in 24 hours of changing it to allow for proper time of the circuit cycling for the light to change but not sure if it takes longer...?

I also went ahead and checked the plug wires resistance when I had the plugs pulled and they ranged from 1.5-2.5k ohms shortest to longest (cylinder 4-1). And if your curious the magic cylinder three was around 2k ohms for however long that wire is, my guess would be 18 inches. Would this be out of tolerance, I know the norm is 10k ohm for every 12 inches or so...?

My next guess would be replacing the power pack or I guess you car guys call it the "ignition coil"...? I will say that the car does run much smoother after replacing the plugs.

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Santa FE SM (2001-06) :: Transmission Started Going Into Limp Mode And Causing Check Engine Light To Come On

2002 Santa Fe, 2.7 AWD

The transmission has started going into limp mode and causing the check engine light to come on.
The codes given are p0750 and.... I think p0751, for shift solenoids C and D. There is also the generic Transmission Control Module code.
Limp mode only occurs at higher speeds although shifting feels a little rough at times in lower speeds.
If operated in manual mode the vehicle can be driven normally at all speeds without going into limp mode.

Fluid levels are fine.

With limp mode occurring in automatic but not occurring in manual mode, is it more reasonable to believe the solenoids are malfunctioning or the control module itself? I'm inclined to replace the solenoids but find it odd that the vehicle operates normally in manual. Also, can the solenoids be replaced without removing the transmission? It looks like I could get the pan off but am unsure if there is room to get the work done once it is removed.

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Elantra XD (2001-06) :: Rough Idle - No Check Or Service Engine Light

I just purchased my first foreign car ever. it is a 2002 Elantra it idles very rough changed plugs using NGK and wires new fuel filter and ran 2 full tanks of high grade fuel with STP fuel injector cleaner. but had no effect on idle also have no check or service engine light. What to check next?

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Elantra XD (2001-06) :: 2004 - Check Engine Light On / Code P2626

I just got this very nice Elantra 04 with 64k on it. Yesterday suddenly I got the check engine light on. Today I went to Auto zone and they have checked my car and it showed code P2626. But there are more than a few suggestions about what could be. I don't know what to do. See the attachment below.

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Camaro :: 1986 - Check Engine Light Flashes On And Off

I got a 1986 Camaro 5 speed 350 4 barrel carb and the check engine light flashes on and off, when it comes on the engine idles really low and when it goes off it runs normal. I've changed the ignition control module twice already because it wouldn't start. i change the ignition coil because thought that was messing the module up. I hooked a obd ll and 1scanner too the car but wouldn't respond.

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