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Check Engine Light
The check engine light comes on in a car when the engine is experiencing a problem. Ask questions here about your car's check engine light.
7,238 Questions
Where did ajinkya rahane stays?
Ajinkya Rahane, the Indian cricketer, has primarily resided in Mumbai, Maharashtra, where he was born and raised. He has also lived in other locations due to his cricketing career, including temporary stays in various cities during domestic and international matches. Additionally, like many athletes, he may have had residences in different cities based on his team's requirements or personal choices.
Engine light on and backfiring on a 1998 Toyota RAV4 what could this be?
1998 rav4 engine wont idle and clacking noise from under timing belt cover
How to you retrieve the fault code when the check engine light of a 98 Mazda 626 is on?
Since it is OBD11 it requires a scanner to retrieve the codes. Most parts stores will read then for free.
you can use a car scanner to clear it out.
Why does Toyota Celica engine warning light come on emissions?
The engine warning light for emissions might come on in a Toyota Celica if the Oxygen Sensors are bad. It might also come on if the catalytic converter is not working properly or is plugged.
What does it mean when the engine warning light comes on for a 2002 Dodge Dakota?
You would have to connect a diagnostic tool to it to find out exactly, but, in general, the yellow check engine light indicates a problem with the emissions control system. Usually this doesn't significantly affect how the vehicle runs, and isn't a critical problem, but it does mean that the engine either may be using more fuel or may be polluting more, or both. And, if you live somewhere that requires vehicle emissions testing, your vehicle will fail automatically if the check engine light is on.
This may or may not be your problem, but (perhaps) the most common cause for the check engine light to come on in Dakotas of this age is cracked vacuum lines, particularly at a valve located near the battery, and/or near the fuel vapour canister under the cab inside the driver's side frame rail. Sometimes you can just trim the line a little shorter to eliminate the crack, but sometimes you'll need to replace the whole line. Either way, it's a really cheap fix if you do it yourself.
Also worthy of note; The check engine light can only be turned off using certain diagnostic tools, which can make it difficult to figure out if you've fixed the problem, so if you opt to purchase one, make certain that it has the ability to reset the light. Decent ones run about $50-$200.
What is the matter of check engine light on in suzuki XL 7 2001 obd2 shows p0440?
PO440 means the computer has detected a leak in the evaporative emissions control system.
Code P0440 could mean one or more of the following has happened:
- The gas cap is not installed or working properly
- The purge solenoid has failed
- The canister is plugged and not working properly
Possible Solutions With a P0440 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
- Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
- Inspect the EVAP system for cuts/holes in tubes/hoses
- Inspect for damaged or disconnected hoses around the Evap purge solenoid
- Check and/or replace the sensor
- Check and/or replace the purge valve
- Have a professional use a smoke machine to detect leaks
What do you do when the maintenance required light stays on?
Most auto parts stores (AutoZone in the US) will read your codes for free, and attempt (sometimes successfully) to decipher them. They may not reset your Check Engine Light, but if it was a temporary condition, disconnect your battery for about a minute and reconnect it. This will reset the ECU.
If the condition persists, the Check Engine Light will come back on.
You can unhook the neg battery terminal for 5 minutes or pull the main fuse for the same duration. Either will clear the codes and reset the monitors. The thing is though, even if you erase a code, if it is recurrent, it will set the MIL light again. And when you reset the computer, it takes a series of stops, starts, cold and hot cycles for the car to relearn settings again. This relearning will prevent you from getting the vehicle to pass inspection, unless you hit the sweet spot when the majority of the monitors are reset AND before the MIL light illuminates again. Generally when I receive codes, I make note of them, and reset the memory and see if they return. Sometimes they do not.
He is asking about the Maintenance Required Light and not the Check Engine Light.
What does a blinking AC light mean on 98 Sienna?
If the AC light is blinking in the Toyota 98 Sienna, it means that something is internally wrong with your AC, it has stopped working, and it is recommended that you take it to the dealer to repair. This is not a very specific answer, but that is exactly what it says in the user manual. I find if I stop, turn off the car and AC for about 15 minutes, then restart, it will work again, until a week later and I have to repeat the process.
the answer u are looking for . a stopped up catalytic converter will not let the engine 2 create a vacume that cause your problem . it needs air flow to breath p.s yes it can and will
P0700 means EATX codes present. You need to have the transmission computer checked for codes.
Flashing check engine lights on GM vehicles indicate cylinder misfire. There are many reasons an engine may "run rich" but bad fuel/air mixtures will cause cylinder misfires. Also, unlike other trouble codes that cause the engine light to stay on, misfire detects are the only cause of a flashing MIL(malfunction indicator lamp). Therefore the ECM will read "blank" when you scan it. You may want to look at spark plugs and wires. O2 sensors may also be the culprit. Check your intake as well, if the engine isn't getting enough air, it may flood itself with more fuel to compensate for the power loss. And that will cause it to "run rich".
Service engine light on code reader won't read code any ideas?
Sounds like your ECM, the main computer on your car that receives messages from all of the sensors........ it might not be working. Or maybe the bulb for the engine light on the dash board is out.
I'm pretty sure that if the ECM is bad, your car won't work at all. Does your car work at all???
Probably a vacuum leak. Do you have a code P0171 or P0174?
What makes a 1999 Grand Am run rough and flash the check engine light on and off?
Severe emissions problem. Fix this ASAP.
To dig a little deeeper into the answer, It also may be a lown head-gasket. I recommend using a friend that knows alot about cars and buying the parts used. Letting a motor repair shop do it can cost you around $1,400!!!!!!!!
Could be a Sticky Egr valve. Replace or clean.
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If the check engine light is flashing , that indicates that an engine cylinder
misfire has been detected . You can drive the vehicle in for repair , just avoid any
rapid acceleration or deceleration because you can damage the catalytic
converter - Helpfull
Why would a 1997 Jeep Wrangler have a random cylinder misfire?
if it is not consistent IE not JUST the #4 cylinder, I would look at the distributor (button, rotor, etc), Ignition coil and the wire connecting them
Also, check the fuel injection, if there isn't enough fuel to drive the cylinder it just sits there (this is also a common reason people fail their e-checks). If the check engine light is on it should kick out a 200 code for the above problem.
If the code is just a 300, I would start checking the distributor and wires as said before, and of course make sure the plugs aren't cracked. If none of that helps, it is time to take the head off and check the seals around the offending cylinder. I hope that is helpful to you! -Katrina
What if check engine light is flashing?
Flashing engine light on virually any vehicle almost always points to at least 1 cylinder misfiring. It usually is a P0300 - multiple random cylinder misfire code...but I've seen cases with a P0301 through P0308 (cylinder 1-8 misfire...or through 12 if you're lucky enough to have 12 cylinders lol).
What could be the cause of the emission control warning light to come on in a 2002 Ford Taurus SE?
It will be impossible to give you any better than a broad answer here, because there are literally hundreds of possibilities as to why a check engine light(CEL) comes on. The system would have to be scanned to retrieve whatever fail codes there are. Then, we would use a manual (that is literally 3 inches thick)that contains flow charts with pinpoint tests, using a voltmeter, to hand diagnose, and find out what is wrong. This process can take a few minutes, it may take a couple of hours, depending on what is actually wrong.
Now here is the "why" of a CEL: What is actually turning on the CEL is the Powertrain Control Module(PCM), commonly known as the engine control computer. Inside of a PCM there are actually two separate systems. One is control, the other system is diagnostics. PCM diagnostics acts as "big brother," constantly looking over the shoulder of the control side of the PCM. Diagnostics is constantly monitering systems to see if the expected voltages and values are present. For example: If the PCM diagnostics knows that it has been so many minutes since the engine was first started, then the engine temperature should be around 195 degrees. In our senerio, if the engine is still 160 degrees, it sees a problem, and sets the CEL. The technician has to use pinpoint diagnostics to see if we have a stuck thermostat, if the Engine Coolant Temp(ECT) sensor if sending a false signal, if the wiring between the ECT and the PCM is bad, or if the PCM is faulty and interpreting the signal received from the ECT incorrectly. But the PCM is not capable of monitering everything all at once, so it basically goes down a checklist, over and over again, as you are driving down the road. Sometimes a problem can come and go intermittantly, at the right times so as to avoid detection by the PCM. That is why sometimes a CEL doesn't always come on everytime there is a problem. Sometimes you can unplug a sensor even while the car is running, and it takes a while for the CEL to come on, just because the PCM diagnostics hasen't gotten back around to looking at that area yet.
Our senerio only talked about one area that a PCM moniters. There are dozens of sub-systems that the PCM looks at, and dozens of possible failures within each of those sub-systems, that could cause a CEL.
What would cause a cylinder misfire and is it serious?
Misfires can be caused by many things. The most common causes are ignition system faults, fuel metering problems, and mechanical engine problems.
A misfire caused by an ignition system fault or an overly rich fuel condition can lead to severe engine damage (requiring rebuild or replacement of the engine) as well as (less costly) damage to oxygen sensors, catalytic converters, exhaust system components, and carpeting.
Misfires, regardless of cause, can damage automatic transmissions and powertrain mounts.
What is a secondary air injection system fault?
Secondary Air Injection is an emissions system that pumps clean air into the exhaust of a vehicle to help lower emissions. It wont effect your fuel mileage or m ake your car blow up. It WILL turn the service engine soon light on. Most parts stores can clear the code from the system, but it is going to come back on. You can pay a dealer to try to fix it, but most likely they will take your money.
How do you get the check engine light to go off?
The corect and only real way:
Have the car scanned, this will tell you what is wrong.
Repair the fault.
Have the car scanned and re-set.
If you re-set the system without repair it will just come back on.
How do you reset the check engine light on a Toyota Camry?
Sorry, it has to be done by the dealer or you need to buy the gauge yourself.
My Suggestion: Remove battery terminal (pos or neg, doesnt matter) leave for 10 min, reconnect, see if gone
How to check malfunction codes on a 1991 park ave?
You will need an OBD I scan tool, they are fairly inexpensive for this car, as you can read the trouble codes by the flash of the "Service Engine Soon" light. Most likey you have a code for the cam sensor, as every TPI 3800 gives this code eventually
