Elantra HD (2006-10) :: 2009 - Malfunction Indicator Light And Horrible Gas Mileage?
Dec 20, 2010
I have a 2009 Hyundai Elantra SE, and up until very recently I've had no issues with it, and am very happy with this car. About 2 weeks ago the malfunction indicator light came on. I checked the manual and it said to contact the dealer ASAP to have it checked out, but the car will still run. I've been terribly busy, and this is the first chance I've had to bring it in, so that's the plan for tomorrow. What this could mean, and will any necessary repairs be covered until the 100,000 mile warranty? If there is a repair needed that isn't covered, I definitely don't want to take it to the dealer!
Also, a few days after this light appeared, my gas mileage has been horrible, apparently. I say apparently because the digital mileage range now tops out at 255 when my tank is full; it used to be 336. It costs the same to fill it, and takes the same amount of gas, about 12 gallons. The gauge goes up to above the Full line, but I seem to go through gas so much quicker. Today for example, a trip that normally would cost me maybe $10 in gas, at the most, cost me almost $20. I haven't noticed any leaks, so perhaps this is related to the indicator light?
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I have a 2009 GS 350 and I attempted to start it today but when I tried to start it up it wouldn't fire up as all the ignition lights kept coming on and I pressed the button repeatedly but couldn't start. After a few attempts I noticed the brake was still down from pressing it while I push the start button but the car still won't start. After a while I noticed none of the lights won't come on so I assume its the battery but then I notice the warning light that came on and in the owners manual they call it the Malfunction indicator Light. It states a malfunction in either the emission control, engine control, throttle control or automatic control systems. It says call the dealer if this occurs which I will do tomorrow.
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The malfunction indicator light on my 2004 Hyundai Elantra stays on from the time I start the car and stays on while driving. I know that it needs to be taken to have the code read but I was just wondering what this meant and if it is a serious problem.
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I have a 2006 manual Hyundai accent with 82,000 kms. In the last couple of days the mil has illuminated so i took it to a mechanic who put it on the computer which he says it could be sucking air or bad fuel or many other things. He did cancel the light which stayed out for about 70 kms and its back on its not flashing just illuminated. Can this do any damage to the motor if still driving.
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I am trying to diagnosis a new issue on my 2006 V6 Sonata . I plugged in my code scanner which gave back MIL Status as ON, but there was no Check Engine - Malfunction Indicator Light (MIL) lit up on the instrument cluster. It also showed that the EVAP, CAT and O2S was "Not Ready". When I checked the codes, I had P0031, P0037, P0051 and P0057, all of which are tied to Low Heater Circuits in the O2 sensors. When I checked the cables under the hood, the lower O2 sensor cable closest to the firewall was stuck onto exhaust pipe. It easily pulled free but I tried clearing the codes but the same 4 codes remained. I checked the resistance across the heater control and ground circuit, all 4 O2 sensors were around 10 ohms.
There seems to be several issues:
1) Why doesn't the instrument cluster register the MIL status as ON and display this Check Engine Light?
2) Why are the EVAP, CAT and O2 "Not Ready", I've heard that these are sometimes tied to disconnecting the battery. I've put almost 3K miles on the vehicle since the battery change.
3) OBD Codes P0031, P0037, P0051, P0057, I would expect all O2 sensors to fail at once, is there a fuse or other control that needs to be replaced or reset?
I am trying to get everything ready for emissions testing on this recently purchased 06 Sonata and I am thinking these issues will cause it to fail.
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I got my b2500/ranger a couple of months ago and I've had very poor gas mileage. I replaced the air filter, changed the plugs, no luck. The truck has 169,000 miles. I haven't checked my exact gas mileage but from what i am seeing its horrible. I filled it up last night, not completely full but really close the full marker. In the morning i drove to school (7 miles) drove home, so 14 miles. Then i had to go back out by my school to pay back a friend. All in all about 28 miles. This cost me a little more than a quarter of a tank. The 2.5l has a 16 gallon fuel tank, so if my calculations are correct im getting about 8 miles to the gallon. I also took it the consideration that it was a half gallon from full.
And it wasn't just past below a quarter to full it was 3/4 of the way to a quarter from full. I know that i didn't test the mpgs "properly" but i think its close enough to draw a conclusion from. And keep in mind its not a 4.0, its a 2.5! Although i do think the engines size contributes to the mpgs because it takes ALOT to accelerate in this truck. At 2k rpm im barely accelerating from a stop light. And on the highway my engine stays a 2500 rpm doing 60-65. I am really hoping I can fix this because I don't want to drive around in a civic. Plus I need a truck for scrapping which is how I pay for gas as i am 17 and jobs are scarce. Also I know about cleaning the MAF butit has tamper proof torx on it which i do not have the tools to remove. I think it could also be the o2 sensors.
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My engine malfunction light has come on.
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I bought a 2009 Accent last week after my 1987 Camry wagon bit the dust. It has 47000 km and seems to have been very well maintained. The only problem I have noticed is that the high beam indicator light does not come on, although the hi beams do work. I downloaded an owner's manual but am not sure which fuse the indicator light is on; in any case, everything else seems to be working so I expect the bulb is burned out. My problem : I don't know its location on the instrument panel since it has never worked, and I don't know if it is possible to replace it without special tools.
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I'm having an issue that I think can be resolved. There are no leaks...no smells...I get roughly 12 MPG.. I drive like an old lady YET gas evaporates like boiling water in my car.
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The Malfunction Indicator Light on my 03 VW Passat 1.8T just came on last night. After doing some research online I noticed that there seems to be some issues with the coil packs on the 1.8's. Any other issues that this light is linked to?? And is the coil packs still very hard to get?
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I've just bought a 2005 Santa Fe CRDI 2.0 Second hand, one owner from new, 60,000miles in 7 years. Just had it's 60,000 mile service. Until today perfect. Started car and no revs. but when I put in gear and moved the car, the revs kicked in and I was able to drive normally. Pulled over to side, into neutral, no revs FOR 1 2 or 3 SECONDS, then revved as normal, put in gear, and able to drive OK. Meanwhile, the MIL light came on and stayed on. I know what the hand book says but before I take it to our Hyundai dealer.
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Car is running fine.. I cant tell any changes in the car at all. Going to the dealer to get fixed and also make them fix my darn headliner that has supposedly been on backorder for 3 months now.
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I have a 2002 Toyota Celica GT and I seem to be getting horrible gas mileage. I have replaced the Sending Unit. Also, I have attached a collage of photos that I was able to capture on my cell phone of what its doing to understand what could be the problem/issue.
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Month ago the malfunction indicator turned on. On checking it was found that wires over the engine were eaten by rats. Reconnection of wires solved the problem.
Today the malfunction indicator light is blinking. Could it be the same wires going loose?
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I have a 2003 B5.5 Passat and the Malfunction Indicator Light went off. I went to Autozone for a diagnostic and received the error code:
PO243- Turbo/Sup Wastegate solenoid A malfunction
I did a search but was unable to find out what this is.
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My daughter has a 1993 maxima SE (3.0 DOHC) that ran ok until one day when she left work and started the car it was running very rough (missing and sputtering). She had the car towed here and I looked it over,it had a lot of visible problems which I have fixed (cracked coil packs,leaking valve cover gaskets, filthy fuel filter,clogged pcv valve, oil saturated air filter,spark plugs burned down to nubs etc, I replaced all those obviously defective parts) but the car still idles very rough, idles too low RPMs (400-500 rpms), exhaust smells like raw fuel and it only gets 5 miles to the gallon on my last test drive.
I removed the intake manifold to get to the rear fuel injectors to see if they might be stuck open and leaking.The car had been sitting for about 5 days with the battery disconnected and when I removed the first injector there was no fuel in the injector or the rail and no pressure in the rail.I left the injector out overnight and the next morning there was fuel all over the top of the engine and in the fuel rail.I put the injector back in and unbolted the rail,I reconnected the battery and turned the key to start the fuel pump.I waited for about 3-4 minutes and did not see any fuel leaking from the injectors.I turned the key off and removed it from the ignition,disconnected the battery and bolted the fuel rail back down.I again removed one of the injectors and there was no fuel in the injector or the rail and no pressure in the rail.After about 2 minutes, with the key out of the ignition and the battery disconnected,I saw fuel start filling the rail and the injector port, so I quickly put the injector back in.
I`m thinking the next step would be to replace the fuel pressure regulator and recheck the injectors for leaks.Am I on the right track here with the pressure regulator? What could be causing the car to suddenly start acting this way, my daughter said the car ran fine on her way to work ( although I hardly think it could have been running "fine" with cracked coil packs,clogged air filter,worn plugs etc)...
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I got this exact warning Monday which is discussed in this thread (linked below) and its problem was a bad inverter water pump while mine seems fine: . Also in the linked thread another whom had gotten the exact warning, but inverter pump was not the problem, believed it meant the Hybrid battery was bad and replaced it. , but mine, at least for now, as discussed below, seems fine.
was about to make a trip, 140 miles, gassed up and when leaving station all these (quoted below) warning lights came on. and the car should have been operating in cold condition still as gas station was only a few miles from home. :
Master Warning Light, Malfunction Indicator, VSC, (!), and Hybrid System Warning on Screen.
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2002 F-150 4x4 super crew w/5.4..So I've got the P0136 code, horrible fuel mileage (around 7 mpg just driving to work without hitting very many lights) and the check engine light comes on intermittently, and I get that code. I have borrowed my friends scanner ("Determionator Scan System") and I can see the live data from the 02 sensors. Today I drove around for a while and watched the scanner and the H02 data, and the downstream sensor on bank 1 shows at most, .09 volts, and it also says its detecting a lean mixture. The code P0136 is for this sensor in particular, and I have heard that an 02 sensor should be around 1 volt. The downstream sensor on the drivers side showed around .75 volts at max.
I believe that it is working correctly, or close to it, and I do not get a code for that sensor. So my question is, is the downstream sensor on the passenger side (bank 1) causing the P0136 code and the poor fuel mileage? also, could an exhaust leak cause the sensor to throw a code and not be bad at all? I do have some very minor exhaust leaks, on both sides of the truck..I'm leaning towards replacing that one 02 sensor. The wires and plug connection to that sensor look fine, plus I would think that if there was a bad wire/connection it would not register any voltage at all.. I have to add, the truck runs fine overall after I replaced the intake manifolds last week. It does still idle high, around 1,000 rpm, after coasting to a stop, then after a few seconds goes back down to a normal idle of around 650 rpm. but idles normal upon starting or in park.
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Yesterday, I was driving home in EV mode, PHEV on, about 80°F, no hills, not accelerating, SOC about 4 bars, about 1/2 mile out, when it dropped out of EV mode, and then I got the red triangle and the check engine light. Today I grabbed the code with an OBD2 reader, and got this:
Freeze Frame Information:
1. DTC for which Freeze Frame was Stored - P0A92.
2. Engine Coolant Temp - 138.20 °F.
3. Engine RPM - 1,888.00 Rpm.
4. Vehicle Speed Sensor - 14.91 Mph.
5. Intake Air Temperature - 96.80 °F.
6. Time Since Engine Start - 101 Sec.
7. # Warm-ups since DTC Cleared - 74.
8. Distance since DTC Cleared - 706.50 Mi.
9. Control Module Voltage - 13.69 V.
10. Ambient Air Temperature - 80.60 °F.
11. Accelerator Pedal Position D - 30.98 %.
12. Accelerator Pedal Position E - 46.67 %.
13. Time since DTC Cleared - 30 Hr32sec.
Does this happen because it's in EV mode? Do I just have to put up with it every so often? (This is the second time it happened.)
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I have been to the dealer 3 times so far because of something to do with the lighting system. The MFD says "AFS Inoperative" and the indicator light flashes for bulb failure or malfunction in the adaptive front lights system.
The dealer has replaced a bulb and power module thus far, but it hasn't fixed the malfunction. The indicator light and warning comes on 4 out of 5 times I drive the car and usually within the first few minutes of driving. It occurs with our without the lights on.
The lights do work at all times, but I don't think the adaptive steering/lighting is working when the error occurs.
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The car is a 2005.5 GLI (75k mi) w/ EvoTech Stg1 software, GHL stack intake, and an Iridium billet diverter valve.
Well today I was driving and the Malfunction Indicator Light on the dash came on and started blinking. When I stepped on the accelerator, the car felt like it had 1/4 the power and began shaking. The car idles kind of weakly, and feels like it has no power when you step on the gas. Also, when you step on the gas the car will shake. The strength of the shaking depends on how hard I press on the throttle, more throttle = more shaking. There is no shaking when it idles or when I have it cruising, only when accelerating.
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