Elantra XD (2001-06) :: 2004 - Cannot Read CEL Code
Mar 13, 2016
I have a 2004 Elantra and I have purchased two different code readers. They were the OBII cheaper readers. One of the readers goes through on the screen what appears to be a diagnostic routine and comes back to the home screen. The other says it has a link error. When we go to OReilly's they say no code comes up. The CEL is on. I want to know if I am missing something simple? I just want the code to get to troubleshooting the CEL light. I have removed the negative terminal and the code goes away for about a week or more then comes back. The only other light on is the air bag light but it has always been on and the CEL has not been on until lately. I have to address all the issues but this is my top one now.
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I have a 2001 Celica GT and the CEL just came on. Went to Autozone and had the code read (PO420) - they said it could be O2 sensor or bad catalytic converter. Is there any way to narrow it down before I just start buying parts to replace? Car has 140,000+ and runs great...surprisingly one of the few that doesn't seem to burn oil! PO420 diagnosis?
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Started as I was warming up the truck,a slight vibration/shudder. First thing that came to mind was F150. Torqued words of wisdom that it might come back, I had a p0301 before. Had no CEL, so decided to drive it to see if it got worse. Turned onto the main road and on came the CEL. Pulled into my FORD dealer, told him about my problem. Code P0308 misfire on #8cylinder was the read out, COP was done and the plug. 40 min of labor. She's even quieter than when #1 got changed.
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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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I bought an 04 elantra a few weeks ago. The check engine light is now on and I get code P0420 listed twice with my code reader. I have replaced the downstream O2 sensor and reset the codes only for them to return again. It is my understanding that this is going to be a convertor problem. My question is that from the research I have done it looks as though this car has two converters. One at the exhaust manifold and then another in the tailpipe. Which one is going to be the most likely causing my Check engine light to come on. Or do I need to replace both converters.
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My 04 Elantra GT hatch is my lifetime favorite car. Especially like the rear seats that fold flat. It has 104k miles, but I want to keep it going.
Day before yesterday the blower started making loud noises. I took car back to Pepboys who replaced the cabin air filter they put in a month ago. They had installed it incorrectly, and it shredded with a 6 inch hole in the middle, and paper everywhere. When I left, the fan was not making any unusual noises.
Yesterday I drove 20 minutes on freeway, stopped to shop, started driving, and turned on fan. Immediately the check light went on. Back to Pepboys, service manager said check was P0501 and was a transmission speed sensor that couldn't be related to the filter mess.
Last night I found the Hyundai forum and I read in a post that this is a wheel speed sensor that would be located in the right front wheel and well not far from the cabin filter. Is it possible that the debris from the fan/filter collision has affected this speed sensor? Or is this just a very untimely coincidence?
I know nothing about automobiles. What I should do next and thereafter? Is it safe to drive this car as usual until the problem is fixed?
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While driving home my cel came on, the next morning I took it to the dealership. The code read camshaft sensor. The mechanic ask how the van was driving, I said perfect, no issues no nothing. He said that was kind of surprising.
The next morning went out and no cel at all and van still running fine. Spoke with another mechanic who said a number of things can cause that code and to hold off on the new sensor and see what happens over the next few weeks engine performance wise and if CEL comes back on.
What should I do? Car is a 2002 KIA Sedona mini van that has had zero engine issues while I have owned it since 2010.
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2003 1.8t passat wagon. 50k miles... The check engine light came on today. Oil and engine temp are fine. Can most shops plug in and diagnose? Can I get one of those code readers at Advanced Auto parts to read the error code?
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Getting "Maintenance Required" on Display ... How to Read the Code and diagnose? Is this just a oil change or what? I wish the technology car was more technical. Wish it would actually tell me what the prob was. I have a 2012 Prius 3....
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I am getting a p0501 code (off my code reader) on my 2001 Elantra. I have already replaced the Speed sensor on top of the transaxle under the air filter. Driving into work today check engine light came back on and took to AutoZone. They are getting a P0501 code Sensor "A". They had no idea which sensor, sensor "A" was. I know there are 4 sensors on this car and have searched for other posts with no luck, all say replace speed sensor. Need to get this done to pass emissions.
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We have a 2002 elantra...went to auto zone and they ran the test and came back with code u0d00...but they didn't have an answer for it in there computer..
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We have been fighting a misfire code for about a year now and I'm pretty sure I finally found the cause. Last Spring the car died on the road and we had it towed to a local service center where they said the fuel pump was bad...this was the 2nd in about 2 years (previous owners doc). We had it replaced and the car was fine but as mentioned had a random misfire code that would come and go. In the last month the car has left us stranded several times and then started after a few hours or a day. While checking the connection to the fuel pump with a meter and test light I verified the pump was getting power correctly to the 5-pin connector but would not start. I unplugged the connector and the 1st 2 pins in the harness connector were damaged and probably burnt.
I cleaned it and applied dialectic grease and plugged it back in turned on the key...fuel pump primed and then the car started and ran fine. It then started to randomly turn on and off but not enough to stall the car. I wiggled the connector and the it I could make it run or shut off. Obviously the connector is bad and the contacts are intermittent. While driving the vibrations would move it just enough to make it cut on and off and more than likely cause a misfire code and sometimes stall the car. My problem now is I can't find a replacement connector/pigtail for the harness connector anywhere including the dealer. Where can I get a new connector for the 5-pin fuel pump harness connector? I have found a MAF replacement connector that looks very similar but not 100% sure if it's the same.
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I recently bought my 2010 gti used with 62k miles on it about 3weeks ago. The car had an carbonio intake stage 1 and a stage 1 tune from Apr when I had bought it. On the test drive and for the first two weeks I had it I did not have any problems. A few days ago on a cold start my car threw an MIL and it was flashing. When I got to school I plugged it into the obd2 scanner. Code read P0303: misfire cylinder 3 detected.
My teacher and I went over possibilities of the misfire. Coil pack, plugs , injector, valve float( even tho this should not occur at 1300rpm cold start) we also thought that maybe because the car is direct injection the valve was not closing all the way due to carbon build up on the top of my valves which in this case I'm glad I don't have an interference head. I moved around the coil packs. What is the cause of this? I'm only misfiring at start and when the engine isn't warms up to operating temp.
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I just picked up a 06 XLT 4.0L with 125K that was a bank repo. After 15 minutes of driving the CEL light came on and the code read at local parts counter was 0402 which they said was the EGR system/valve. Is this a common thing? What are solutions (cleaning or replace)?
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I recently bought elantra 2004 gls, with 107k mileage.
Few days ago the check engine light came on while I was driving it. The next day it went off. This happened today also. I didn't notice anything wrong with the car, no smell, tranny fluid is recent, oil change 2.5k ago.
The code was p0501, speed sensor.
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I keep getting the same code for the check engine light of P0128. I have replaced the thermostat twice and the ECT sensor already. I do know know what else I can do for getting this fixed. I have checked the fans and they are working correctly. I have also checked to make sure there is nothing wrong with the head gasket. My car does not over heat, but it does take forever for the temperature gauge to rise. This is for a 2006 Hyundai Elantra. What else I can do?
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I have a 01 elantra. Check engine light is on. Diags say p0133 o2 sensor slow bank 1 #1. Any way I have replaced the front sensor. Actually now I have 3 of them. The exhaust does not leak. New gaskets on the converter. New flex pipe and everything has been welded.
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2010 f150 with 5.4 catalytic converter. Engine light has been going on and off for the past couple of months. Had the code read and its says bank one catalytic converter. Ford dealer said to replace the 02 sensors. Had that done but light still comes on and off with same code. Could there be something wrong with the sensor or should I just have the CC replaced also. I just don't understand why it would come on for a few days and then not come on for a few days if its the CC?
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My 1999 super duty v10 has thrown a code but my scanner and a mechanics scanner won't power up and read the code, I also noticed that the cigarette lighter is dead. Which fuse controls both the plug and the lighter?
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P0420 code. Catalyst Efficiency Below Normal (Bank 1)
This was the explanation I got from autozone. First question is how serious is this? The car seems to drive fine and normal, but I just purchased this car about a month ago. The light turned off after the guy at autozone plugged in the scanner. I am sure it will come back on again after some driving. Is it ok to drive with it on?
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I just had a ton of maintenance done on my 2003 Elantra. Spark plugs & wires, timing belt, drive belts, water pump, replaced coolant and replaced the transmission fluid. The spark plugs are NGK platinum as recommended in my handbook. As soon as the mechanic started the car after the tuneup, the engine light came on with a cam shaft sensor code. He said it went off on its own.
The engine light came back on when I started the car. There's also a major loss of power after coming to a stop. I have to floor it to get it to go anywhere above 20 mph after a stop.
The mechanic said that when he replaced my water pump the liquid splashed all over everything and he thinks he might have gotten something wet that shouldn't have gotten wet and that all will be fine after it dries.
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