I have a October 2003 Tundra. The Engine check light...

Answer by Erich
Submitted on 6/4/2004
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Thanks for the information about Toyota's extended warranty on the oxygen sensors. I received my letter from Toyota about 1 or 2 weeks ago (very happy about that, the EPA probably pressured Toyota into this one). Now I got to get Toyota to fix it without telling me it is something else and wanting to charge me some outrageous amount. I spoke to a technician at my local Toyota garage regarding the problem and the new warranty and he stated that my light could be on because of many reasons... If when they check it out and it is not the oxygen sensor, I will be hit for $80 for the diagnosis (I love dealerships!!!!!!!!). My plan is to head to Autozone for the free diagnosis and then head to Toyota Dealership if it is the oxygen sensors. If anybody has a better plan, please post. Thanks again everyone for all the information!

Answer by Stan
Submitted on 3/1/2005
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I know it's been almost a year since the original post but I took my 2003 Tundra in yesterday because the check engine light came on. The owner's manual said it could be a loose cap, but it was definitely not the cap. The next step was to take it to the dealership. At first they thought it was the oxygen sensor but it turned out to be the filler neck. It seems that Toyota redesigned the filler neck and the redesign caused problems. The original neck actually works fine but something breaks down that causes a false reading of low pressure in the gas tank, thus the check engine light. Another case of "it ain't broke but we'll design a new one so we can charge people more"? I doubt that was their real motive but it does make me wonder why they redesigned it.

Answer by Phil Ada
Submitted on 8/22/2006
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I have a 2003 Toyota Tundra, V-8 truck and my check engine light came on at 35K miles. I took it in to the local Toyota Dealer and they informed me that it was a result of a defective filler neck hose assembly and is consider as part of the Emisson Control System. Researching the internet, I found that there are a lot of 2003 Toyota Tundra owners that have experience the same problem. The Toyota Dealer check with my extended vehicle contract, Warrantech Automotive, Inc and they informed me that in the exclusion section. It indicated that the filler neck in not covered. I checked with the NHTSA (National Highway Traffic Safety Administration) website and they have been complaints filed as well. But, according to the Toyota Dealership, someone would have to loose their lives or an investigation initiated with the Toyota Service Manager to start the process for a recall. I choose the latter. I figure if a lot of 2003 Tundra owners start the process at their locations. Maybe Toyota Motors will start to listen. I hate to bring my truck in every 35k miles to have this part changed at a cost of $200.00 plus.

Answer by shirl
Submitted on 10/3/2006
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I have a 2003 RAVA4. I use synthetic oil in it when I get my regular oil change. Last week I was driving to the store and my check engine light and the oil light came on. I got an oil change around two months ago. I got very alarmed. I went back to my home and put more oil in the engine. I then went to the store now I am hearing a sound that sounds like the car is a bomb. I took it to the dealer. The mechanics says I have sludge. I can not understand this because I use synthetic oil. Toyota dealer want me to purchase a new engine with labor it will cost me 8,000.00. I have 39,000 miles. Should the dealer fix this for me because my engine is still under warranty?

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Question by Paul Cabral
Submitted on 2/16/2004
Related FAQ: Toyota Tundra FAQ
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I have a October 2003 Tundra. The Engine check light comes on constantly .The dealer told me not to worry about it over the weekend but have any of you also experienced this problem ? The truck has now gone in to the dealer to be checked and I have only done 2200 Miles. awaiting your response

Answer by Jacob Gregory
Submitted on 2/29/2004
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I also own a 2003 Tundra with the same problem. I've been told by the dealer that failure to tighten the gas cap can cause the check engine light to come on. It appears that low pressure in the fuel system is sensed as a problem. However, it just happened to me for the second time and I am positive I properly tightened the cap. I will be contacting the dealer soon!

Answer by susu_ye
Submitted on 3/15/2004
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My car is 2003 Toyota corolla. The engine check light came out today. I have no idea what is going on? Who can tell me ?

Answer by tim
Submitted on 3/15/2004
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i don't own a tundra or a corolla, but i did have the same problem with my civic. my dealer told me that newer model cars, especially imports are coming out with censors that give you a check engine light when it's time to change the oil. i would have to change my oil then take it to the dealer to get the light turned off.

Answer by susu_ye
Submitted on 3/17/2004
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I found out what happened to car now. As same as Jacob Gregory said. I took my car to my dealer. They checked out that my car had small leak, and they did pressure tested for my car. The final answer is the gas cap leaking.

Answer by trd
Submitted on 4/1/2004
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2oo3 sport side extend cab 6000 miles check engine light came on every 200 miles .toyota replaced fill neck with updated model.ok so far.check for recalls.

Answer by JASONROBERSON78
Submitted on 4/6/2004
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to all those who have check engine light...trucks check oil ..you can reset the light but not for sure..(HONDA'S TAKE OUT THE BATTERY BACK-UP FUSE for 10 seconds ..it is under the hood in the fuse panel);but most commonly check engine light is due to a vacum leak...HONDA..try the o2 sensor

Answer by Sonny
Submitted on 4/7/2004
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My 2003 Tundra had the check engine light come on twice during the first 5000 miles. Took it to the dealer both times. Second time they replaced the fuel filler spout and the gas cap. Said that there was an air leak somewhere along there. No problems since this was done. Runs like a champ.

Answer by Erich
Submitted on 4/20/2004
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I have a 2000 Tundra with roughly 40,000 miles. Both my my brake light and check engine light came on within a month of each other. Brake light was due to the fluid being too low even though it did not look it. Just add some new fluid and the light went out. I still have the check engine light on and I hate to go to the dealer to get ripped off! I have now heard that this light might be caused by one or two oxygen sensors going bad, dirty oil, or a leaking gas cap. Where should I start? I do not drive the truck much so I figure I have some time to fix it. If anybody has some great ideas, please let me know. Thanks

Answer by nocrap
Submitted on 4/27/2004
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Tundra check engine light is usually an oxygen sensor problem. Bad heaters in the oxygen sensors caused a light but engine still runs good.

Answer by PBS
Submitted on 4/28/2004
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I HAVE A 2001 COROLLA WITH 52K MILES; CAN SOMEBODY TELL ME WHAT IS THE PROBLEM

Answer by Ryan
Submitted on 5/11/2004
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There was a recall on the 2003 toyota tundras Gas caps, what they were saying about the gas cap leaking is true. Just take it in to the dealarship and have it replaced free of charge, simple solution.

Answer by coptr911
Submitted on 5/13/2004
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My check engine light comes too. But mine has to do with Mass Air Sensor meter. It is in the air box on stock models, or mounted on the intake tube for all you K&N FIPK users. The MAS gets dirty and does not function properly. Some times you need to take it out and spray it with contact cleaner to get the debrit out. Talking about dealer rip offs...They wanted to charge me $75.00 just to tell me what the light means not fixing the problem. Then...They want $210.00 to replace the MAS. No dice, guys..I just took it home and cleaned it and wella! it works and the light is now out.Don't get ripped off. I HIGHLY reccomend the K&N FIPK kit for the tundra. SBaumgartner@dc.rr.com

Answer by harman
Submitted on 5/27/2004
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Hi guys: i have a 95 chevy cavalier , the engine light (orange) lights up as u drive at 60 kms, the mechanic replaced the oil filter, another mechanic asked me to put fuel injectors, another one replaced the sensor (crank sensor) , and the light still comes upon driving at and above 60kms. may be u have some idea. email at harman07@hotmail.com. i would really appreciate it . Have a nice ride. bye

Answer by filhiol
Submitted on 6/1/2004
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Erich, Toyota is extending the warranty on year 2000-2002 Tundras oxy sensors to 7 years or 90,000 miles. They are having a real problem with them.

Answer by schu
Submitted on 12/24/2004
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MY 2003 TUNDRA HAS HAD ITS ENGINE LIGHT ON TWICE, THE ORANGE ONE, AND I HAVE ONLY 13000 MILES ON THE TRUCK...IT HAS COME ON TWICE IN 5 WEEKS, REPAIRED TWICE UNDER WARRANTY...THEY DID THE VACUUM CANISTER AND LINE TO THE VACUUM LAST TIME, AND THE FIRST TIME WHO KNOWS, BUT IT WAS RETURNED FROM TOYOTA WITH THE LIGHT OFF...I AM READY TO SELL IT NOW, AFTER THE 3RD REPAIR UP AND COMING IN 6 WEEKS TIME FOR THE SAME PROBLEM.

Answer by Debinoregon
Submitted on 3/24/2006
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6. Turn the key to the "On" position. 7. Release the "Trip" button. Heres the trick, 2yrs later lol sorry ..

Answer by tmteam
Submitted on 6/18/2004
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we have a 2001 Tundra 4wd trd, after a trip to the lake on the way home, topped off with gas and soon CHECK ENGINE light came on, air filter is nasty, but say not to change it's a trd experiment or whatever, HOW do we get that light off?? is there a key or brake sequence like fords??

Answer by Chris in ATL
Submitted on 6/21/2004
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I just tried the suggestion above to remove the battery fuse under the hood for 10 seconds to reset the Check Engine Light on a 2003 Honda Civic - Worked like a charm - thanks - you'll need a screw driver to remove the fuse and then put it back on! THANKS for the info!

Answer by JaySee
Submitted on 7/13/2004
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I have a 2003 Civic.. the light seems to come on when ever a) the tires spin too much (winter when slippery) or b) when it red lines or forces to much... There's a trick with the millage button to reset it.. I should have written it down.. something about pressing it and turning the key.. if someone knows let me know..

Answer by Megan
Submitted on 8/31/2004
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i have a 2004 corolla with 14000 and my check engine light just came on i tighten the gas cap, when will the light go off? if that is not the problem then what is it?

Answer by santhisagar
Submitted on 9/16/2004
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I recently bought a used 98 corolla, 80000 miles on it. The check engine light is on and when got it checked they said it is because of the oxygen sensor. I am wondering if the engine gets affected because of this. can I wait for some time before I get it fixed. I found that it costs around $400 to get it fixed. Please tell me if I can wait for while and then get it fixed.

Answer by shane
Submitted on 11/13/2004
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i have a toyota corolla 2001, does anyone know where the RESET BUTTON might be?

Answer by Chandra
Submitted on 11/14/2004
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I have a 1997 Toyota Corolla CE that I just purchased and my check engine light came on the other day. The car is driving well but the light won't go off. I just bought the damn thing, as is too! If I take it back to the dealership I just know they will charge me and arm and a leg. Does anyone know how to reset the check engine light on a corolla?

Answer by Wes
Submitted on 12/28/2004
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I have 200 Toyota Corolla and the engine check light came on. Pl advise me what the problem could be Thanks

Answer by Samiam
Submitted on 1/4/2005
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I have Toyota Tundra 2000 and the Check Engine ligth come all the time. Can any one tell me Exectly how to fix it without going to dealer to get rips offs.

Answer by bt express
Submitted on 1/10/2005
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I have a 2000 Tundra which just underwent a 60,000 mile service and the Check Engine light came on within 10 miles of leaving the dealership. I once reset the security system by disconnecting the battery. Does anyone think this would work for the CE light?

Answer by Dave
Submitted on 1/20/2005
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Thank you for everyone putting their problems and resolutions on this website. It saved me a trip to the dealership.

Answer by AK in LR
Submitted on 3/14/2005
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The check engine light came on twice during the first 5,000 miles of my 2003 Tundra. The first time the service department at the dealership said it was a faulty gas cap and replaced it. The second time they replaced the fuel filler spout and the gas cap. They said there was a warranty advisory, not a recall, out about the fuel filler spout. The fuel filler spout replacement solved the problem. My truck runs great.

Answer by rumi
Submitted on 9/19/2005
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Hi guys, i have 96 camry, i just drove it to Amarillio TX from Kansas city, now engine lights coming on, do any body have a suggesstion about this light. thanks

Answer by peggy
Submitted on 10/3/2005
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I checked the oil, tires, every fluid, finally to get the light off, we disconnected the terminal of the battery for 1 min. then reconnected it, the ck engine light went off...if anything "bad" happens we will post again.

Answer by Joe Zip
Submitted on 1/28/2006
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On Toyota Camry's and probably other Toyota's too you reset the check engine 'light by disconnecting the battery terminal (either one) , count slowly to ten, then put it back on.

Answer by Huck
Submitted on 5/20/2006
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I have a 2002 Camry that has been in for check engine light at least 5 times in the past 2 yrs. They said it was the gas cap the first time, ox sensor 1 time, MAP sensor 1 time, and reset the computer last time. I have spent over $3000 for these parts/labor and still the check engine light has come on again. I get charged $200 to hook up to the computer and they say they are the only ones that can reset the light. What can this be or should I call the lemon law on them?

Answer by i need help
Submitted on 6/11/2006
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i have a toyota corolla 2000.i have wasted around 250.00 for these engine lights.They say t will be gone but it keeps coming back.I have know idea on what to do now.i know someone who has wasted over 1000 dollars and its still there.Can someone please help me! By:I need help!!

Answer by problem
Submitted on 7/3/2006
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HI, I have a 98 honda civic. The engine light is ON all the time.. I have taken it to a dealer/ a mechanic.. both of them could not figure our what the problem is? did the oil change/checked o2 sensor/.. Can any one suggest me what to do? Thanks in advance

Answer by mothernature
Submitted on 7/6/2006
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I have a 2001 Corolla with only 53000 KMS. I take unbelievably good care of it. The check Engine Light came on a few days ago. Toyota said it was the shift solenoid malfunction. And that I need a new transmission. Cost 3800 dollars. Can someone please help me here Thank You

Answer by gundpunky
Submitted on 8/10/2006
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Hi I have a 2003 Corolla. I changed the horn to a louder one and it was working fine until two days ago when all of a sudden it's not working. I checked the fuse box but was surprise to find that there is no fuse in the slot for "car horn". My questions are: 1. Do I need to put a fuse in there? 2. How do I determine how many voltage is feeding into the horn? Many thanks.