Check engine light???
Thread Starter
Intermediate
Joined: Mar 2011
Posts: 29
Likes: 0
From: Charlotte 28105
Check engine light???
My 2008 is at exactly 99,512 miles just brought it in for an oil change 2 weeks ago. I was told the spark plugs needed to replaced because I was approaching 100k miles. That is the only reason I could think of the light is on. If anyone could weigh in please do!!! Thanks
Melting Slicks
Joined: Jan 2005
Posts: 2,326
Likes: 5
From: louisville "derby city" kentucky
you probably need plugs, but also have the codes read by someone who is a tech and knowledgeable about them. it may have set a misfire code due to the plugs being worn. 
Race Director
Joined: Jan 2011
Posts: 11,973
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From: Tonawanda New York
Le Mans Master
Joined: Feb 2007
Posts: 8,514
Likes: 235
From: Currently somewhere in IL,IN,KY,TN,MO,AR,MS,AL, or FL
You're kidding, right? There are 516 major errors that the car can specifically identify, set codes, and turn the light on to tell you that something is wrong and you want us to just pick one at random with no other information other than mileage and the oil was changed 2 weeks ago? OK, I'll play the game. I choose P0668 Transmission Control Module Temperature Sensor Circuit Low Voltage. Do I win? 
Go to one of the major parts stores and have them read the codes for free and tell us which of the 516 you have and we can be a lot more helpful. Otherwise we can guess for a long time without giving you anything useful. It could be something trivial like the gas cap (common) or the engine on the verge of self destructing.
Go to one of the major parts stores and have them read the codes for free and tell us which of the 516 you have and we can be a lot more helpful. Otherwise we can guess for a long time without giving you anything useful. It could be something trivial like the gas cap (common) or the engine on the verge of self destructing.
Safety Car
Joined: Dec 2006
Posts: 4,583
Likes: 1,664
From: Pearland / Houston Tx
You're kidding, right? There are 516 major errors that the car can specifically identify, set codes, and turn the light on to tell you that something is wrong and you want us to just pick one at random with no other information other than mileage and the oil was changed 2 weeks ago? OK, I'll play the game. I choose P0668 Transmission Control Module Temperature Sensor Circuit Low Voltage. Do I win?
Go to one of the major parts stores and have them read the codes for free and tell us which of the 516 you have and we can be a lot more helpful. Otherwise we can guess for a long time without giving you anything useful. It could be something trivial like the gas cap (common) or the engine on the verge of self destructing.
Go to one of the major parts stores and have them read the codes for free and tell us which of the 516 you have and we can be a lot more helpful. Otherwise we can guess for a long time without giving you anything useful. It could be something trivial like the gas cap (common) or the engine on the verge of self destructing.
Don't understand these posts of "Check engine light on...what could it be?'" We need a "This thread is worthless without an actual trouble code posted" pic.When the little AutoZone girl didn't clear my DTC as requested, I spent a whopping 20 bucks on my own CAN OBD reader.
Drifting
Joined: Feb 2012
Posts: 1,428
Likes: 113
From: Brick NJ
You're kidding, right? There are 516 major errors that the car can specifically identify, set codes, and turn the light on to tell you that something is wrong and you want us to just pick one at random with no other information other than mileage and the oil was changed 2 weeks ago? OK, I'll play the game. I choose P0668 Transmission Control Module Temperature Sensor Circuit Low Voltage. Do I win?
Go to one of the major parts stores and have them read the codes for free and tell us which of the 516 you have and we can be a lot more helpful. Otherwise we can guess for a long time without giving you anything useful. It could be something trivial like the gas cap (common) or the engine on the verge of self destructing.
Go to one of the major parts stores and have them read the codes for free and tell us which of the 516 you have and we can be a lot more helpful. Otherwise we can guess for a long time without giving you anything useful. It could be something trivial like the gas cap (common) or the engine on the verge of self destructing.
No sorry you lose, spin the wheel and try again!!
Thread Starter
Intermediate
Joined: Mar 2011
Posts: 29
Likes: 0
From: Charlotte 28105
Talked to my guy earlier this evening, didn't get the exact code from him but he said the light wasn't anything from a tune up stand point. However, had to do with the evap. If anyone could enlighten me it would be greatly appreciated.
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Melting Slicks
Joined: Sep 2011
Posts: 3,018
Likes: 171
From: Vancouver Island
You need the exact code. There is an evap code for a small leak, and a code for a large leak, and probably others as well. A while back I got the CEL on, it stayed on for a while but the car ran fine, so I picked up a scan tool, read the code p0442 for small leak, cleared the code and it never came back. Scan tools are handy to have aroung the garage.
Retired & lovin' it!
Joined: Mar 2005
Posts: 4,474
Likes: 547
From: Jackson NJ
Hello....it's very simple. Go to any auto parts store like Advance Auto, PEP Boys or whoever is local to you. Ask them to plug in their code reader (which they will all do for free) & see what specific error code or codes is causing the "Check Engine Light" to come on. It could be something simple like a loose gas cap or something difficult like a bad ECM. Without the specific code(s), you're wasting your time asking the question.
Safety Car
Joined: Dec 2004
Posts: 3,526
Likes: 18
From: Santa Fe TX
EDIT - based on your "EVAP" code:
loose or bad gas cap <-- try this first, buy a new cap or lube the seal on the old one.
vacuum leak
charcoal canister full of fuel <-- do you regularly top off when fueling up?
Gasoline expands with heat and loses volume with cool. In a closed system this creates pressure and vacuum in the airspace above it. Old cars use to vent that to the atmosphere, but that is no longer allowed. Even my new lawnmower has evap canister.
A typical system consists of a small canister full of charcoal, valves, hoses, vents in the fuel lines and a sealed fuel tank cap. When fuel evaporates inside the gas tank, the excess vapors are transferred to the charcoal canister. They're stored there until they can safely be transferred back to the engine to be burned with the normal air-fuel mixture.
Your code says the system is leaking somewhere.
loose or bad gas cap <-- try this first, buy a new cap or lube the seal on the old one.
vacuum leak
charcoal canister full of fuel <-- do you regularly top off when fueling up?
Gasoline expands with heat and loses volume with cool. In a closed system this creates pressure and vacuum in the airspace above it. Old cars use to vent that to the atmosphere, but that is no longer allowed. Even my new lawnmower has evap canister.
A typical system consists of a small canister full of charcoal, valves, hoses, vents in the fuel lines and a sealed fuel tank cap. When fuel evaporates inside the gas tank, the excess vapors are transferred to the charcoal canister. They're stored there until they can safely be transferred back to the engine to be burned with the normal air-fuel mixture.
Your code says the system is leaking somewhere.
Last edited by jedblanks; Aug 29, 2014 at 09:48 AM.
Melting Slicks
Joined: Nov 2007
Posts: 2,280
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From: Pittsburgh PA
St. Jude Donor '10-'11-'12-'13-'14