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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
Why does your suzuki Verona 2004 check engine light keep flashing?
A flashing check engine light is an indication of a misfire.
What is check engine code P1414 for 2006 Dodge Durango?
P1414Secondary Air Injection System Monitor circuit High Voltage
Air pump is shot. Looks like it's time to break out the meter and a wiring diagram! good luck!
Can boosting a car cause a check engine light to come on?
Yes. Just had the same situation. The other car didn't need a boost (gear shift was in D but they thought it was dead because of the indicator on the dash and I didn't check before trying to boost) and the extra power from both batteries caused my car to throw up three indicator lights -- engine, wrench and battery. I cleared them with my DEC II scanner and it doesn't appear that anything was adversely affected (DEC indicated low voltage).
no oil
i have the same problem with a 1993 acura vigor
I was personally able to solve a P302, misfire in 2nd cylinder, code by replacing the spark plugs and wires. Worked fine after that. It's generally a very simple ignition problem.
I found on line that the p300 coad is a random missfire in all cylinders and that the last number in a p300 code is the cylinder that is misfiring. Your p302 & p303 would be #2&3 cylinders.
injectors are often the cause of misfire codes on this year and model.
The first thing to try would be new spark plugs plugs and plug wires. This fixes misfires the majority of the time. If that doesn't help check the rotor and fuel injectors.
Either a bad coil or bad fuel injectors. try switching coils with other cylinder and see if code changes. if yes, you got a bad coil, if not, you must change all 4 injectors, cause they will all go bad eventually. I've seen it. I was a Toyota technician.
I have a 2000 Corolla with 140,000 miles that had P0300 and P0302 codes. I fixed it by replacing the original dirty fuel injectors with clean remanufactured injectors. Total cost for swapping injectors was $130. It is easy to do it yourself and the car now runs like it has a new engine.
Easy fix - I can also be water in the gasoline. This is caused by a leak in the underground storage tanks. - If your car was running perfect and you just filled-up and then it starts to run horrible and you get codes P0300 - P0301 - P0302 - P0303 - P0304 this is all cylinders miss-firing. The probability of all injectors getting dirty or all spark plugs going bad at one time is highly unlikely. You should suspect water contamination.
I made a YouTube video on this on February the 24th 2011 - Search YouTube for "water in fuel Toyota obd"
Where or how do you reset the check engine light on a 1993 Geo Tracker?
Underneath the dash by the steering wheel is a small switch. move it up and back down. If this does not work remove negative battery cable and than reatach it.
AnswerThe "Check engine" switch is easier to reach if you remove the small panel at the bottom of the dash under the steering wheel. It's a small plastic switch with a metal face. Switch it to the opposite of it's current position and leave it there. I tried removing the negative terminal several times for varying lengths of time and it never turned off the light, although I have read that it worked for some people. Answeron 91-96 trackers, the switch is located under the dash, next to the speaker, drivers side. its actually mounted to the frame. move the switch button to the opposite direction that it currently is in, and the check engine light will go out. Remember that around 50,000 more miles, it will come on again, and you will have to do the same thing, just move the switch opposite the way you did last time. im not sure if the check engine will flash if there is an actuall problem, but it comes/ stays on after so many miles as a reminder to check certain things such as oxygen sensor, timing belt, which is probally the main thing that needs to be checked/replaced, because the will break, and if you lucky enough that it did not damage the motor, you will still be stuck until its fixed(no fire)If the "check engine" light is on, the computer has stored a diagnostic code number. You can read that code number by using a code scanner. All of the information is available for the computer to tell you exactly what's wrong. You can borrow, rent or buy a code scanner at most auto parts retailers.
Why did the ets and check engine light came on together and the back of car jerked in 1996 cavalier?
ets and check engine light on in 98 Chevy cavalier
Can i erase codes with obd II scanner and pass smog check?
Short answer: No. Of course, I don't know what state you're in, what the emissions requirements are, etc. Some engine faults that show up as a "Check Engine" light don't necessarily cause your car to fail the test (depending on your state), so clearing the light might not be necessary. Clearing the DTCs (Diagnostic Test Codes) and turning off the Check Engine light sets a code in the car's computer. Subsequently, any OBDII reader can detect this. The car has to be driven for a certain amount of time in a range of conditions (depends on make/model) to reset the computer "Ready" signal. Unless their OBDII reader detects this "Ready" signal, the smog check guys will fail you. In general.
How does one check engine light codes?
To check engine light codes one would have to bring your vehicle to a mechanic who can use a computer to check the computer chip that regulates this function.
How do you pull trouble codes from a 1993 Toyota corolla?
find the "diagnosis" connection box under the hood left side of engine. open; attach jumper wire to "e1" + "te1" & count flashes of check eng light to obtain codes.
Normally not, depending on your municipality. Closet lights must be enclosed/recessed.
Yes, if it is a toilet with WC and mandatory wash-hand-basin. It must be an approved splashproof type of light fitting and has to be controlled by a switch that is either outside the closet or is a pull-switch in the ceiling. Also you will have to fit an approved type of extractor fan, usually controlled by the light switch. Both light and fan must be tested by a licensed electrician to conform to current National wiring regulations otherwise the local Building Inspector will not issue a "Satisfactory Work Completion" certificate for your basement. Always be sure to switch off the breakers at the main panel before you attempt to do any work on any mains power circuit.
check to make sure all of the fuel injectors are plugged in completely, i have a 2001 sable and it had a rough idle after i had the fuel pump replaced, i had the check engine light checked at "auto zone" parts store, they check it for free. the code showed number six cylinder problem, changed the spark plugs and number six plug wire no change in rough idle. i read up on the internet and one person had a problem with a plugged fuel injector, it got me thinking after they said number six injector is easy to get to, i checked it and it was not plugged in all the way. plugged it in and all good now. i took my 2001 mercury sable up to the garage that put the fuel pump in, hads them rest the error code, it has not come back on
check the codes to determine why it is lighting up. Then fix the problem, reset the code and the light should go off. A "check engine" light comes on when the computer has detected a "fault". That's typically caused by a problem with one or more sensors. Use a code scanner to read the fault code, fix the problem and the light will go out.
How do i reset my service engine light in my armada?
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
Fuel burning rich check engine light on?
When the check engine light is on the computer has information that you should know. Connect a code scanner to find out why and most likely it will tell you what is causing the rich burn condition.
Does a 1991 Nissan Pathfinder have a check Engine Light?
Yes, may read service engine soon, check engine, .....
How do you reset the check engine light on a 2001 Toyota Avalon?
First, if it is something like a loose gas cap, just tighten it and it will reset itself in the next 100 miles or so. If it is something else, like a leaky gas cap it will never reset. But to reset the OnBoardDiagnostic (OBD)Computer... Go to eBay and search "obdII" and buy one, they run about $50.00 including shipping. There are two types, ISO for Chrysler and some Japanese, and the other one for all the others like Ford and GM. There are several that are both, that is the kind you want. Be sure to email the eBay seller and ask if it is used with your year and model. (1996 was a changeover year for OBDII technology, so this advice may not apply to everybody--but the dealer service guy can tell you over the phone--ask him if it is OBDII compliant.) When you get it, you just plug it in and let it cycle 4 or 5 times and it resets everything. You then have to drive your car for 50 to 100 miles for the onboard computer to test everything, and in the meantime your car will fail smog checks because it has no history in the computer and the smog test procedure demands a history even if there is no pollution. Cut and Paste http://search.ebay.com/OBDII for a list of them for sale on eBay. Most units come with a list of generic fault codes so you can tell what the problem is, this could be very helpful.
How to reset check engine light GMC?
Reset service engine soon for inspection of 1999 Nissan Maxima?
Disconnecting the negative battery cable for 5 minutes will sometimes reset the light, but no always. If not, you will need to reset it with an OBD2 scan tool. But, you can reset the light all you want but unless you repair the problem that caused the light to come on in the first place it will come back on in probably less than 1 mile of driving. To get the car inspected you will have to repair it.
How do you check codes for check engine 2003 Malibu?
Go to "Autozone" and get them to do a readout.Find you an "Honest Mechanic" and get them to fix it,ok?
Hisitation and check engine in 2000 f150?
Have Dealer or Mechanic Check The coil packs! Each Plug has one! Don't get them Wet on models '99-'03 ...ie. Washing your Engine Down! This task will short them out whether engine is running or not. Water stays trapped in small crevuses on this series of coil packs and when it is running and put it under a load ex. (going uphill) in overdrive, It drops its load and causes engine to misfire. Truck will jump like tranny going out. Will cause check engine light to come on. Staying on most of the time. $185.00 per pack installed at dealer. ouch! This is a design flaw. The new ones that it is replaced with haven't had this problem. I've had three done And I still like my '02 Supercrew 4x4 5.4 liter. also could be fuel pump or throttle body clogging or bad fuel. Best to get codes read. You can get it done for free at "AutoZone" Auto parts.
