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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
My 2003 Trailblazer's reduced engine power light is on what does this mean is wrong?
Time to buy a new car.
If you see a monitor blinking what do you check first?
Probably the lead from the monitor to the computer, make sure that it is pushed fully in at both ends.
How do you reset check engine light 2003 Toyota Camry?
The check engine light is reset with a scan tool after repairing the failure that caused the trouble codes.
What to do when check engine and trac light comes on a 2001 Lexus es 300?
Have the ECU scanned with an OBD2 scan tool.
Why is your check engine light still on after the problem has been repaired?
If the light is still on after the repair then you did no repair the problem you just think you did. I assume you reset the light. If not reset it and see if it comes back on. If so, you have another problem. If you retrieved the code and it pointed to, as an example, a problem with the O2 sensor, that only means the O2 sensor is being effected, and not necessarily that the sensor is bad. Any code only tells you what part is being effected not necessarily the defective part. That is where skill, knowledge, training, and diagnosis comes into play.
Have vehicle scanned to see if any codes are stored to determine the problem
Where is the location of the bank 1 sensor 1 on 1996 Camry?
If it's a 6 cylinder there will be two banks, left and right or 1 and 2 as they're calling them, then there will be a front and a rear sensor, or sensors 1 and 2.
If it's a 4 cylinder there will only be 1 bank with a front and a rear sensor.
With that out of the way...
The front sensor is typically screwed into the EXHAUST manifold, typically somewhere near the junction where all of the exhaust lines come together. It should be the only thing on the exhaust manifold that has a wire connected.
How do you turn off the check engine light in your 2002 Lincoln ls?
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
How do you troubleshoot a service engine soon light on a bravada?
Have the ECU scanned with an OBD2 scan tool. This will retrieve the code which will tell you what part is being effected.
How to Reset check engine light 2004 silverado?
After reading the codes with a scanner, and repairing the cause, you clear the code with a scanner
from the codes you give it should be a gas engine and you are running rich. vac leak or fuel inj. problem ect. you need to let some one check out your problem before you have other related damage. Improper engine temp or false reporting of that info to the trucks computer will cause improper fuel calculation.
A vaccume leak could cause that OR one of the hoses going 2 the gas evaperator canister OR a hose going 2 the Tank or filler neck.
The filler neck could be cracked at the tank
You may simply need the have the code reset. If, after being reset, the check engine light comes back on, then you have further problems.
Probably the filler neck is rusted through.I had the same problom on a 1996 Pontiac Grand AM.
Fixed the same on my Venture 2001 by changing the vacuam purge switch ...looks like a solenoid switch connected to and located near the vacuam canister ... easily remove.
1992-Astro Van-Service Engine soon lamp goes on for a few minutes and then off-reasons?
could be o2 sensors switching irregularly
start with a new fuel filter
On mine it was the Intake Manifold gasket .Not just the top plentum but the one under that .Cost about 8.00 for the gaskets.Run the engine codes and if it says misfire on a plug then that could be it .
Could also be a clogged fuel filter, a bad Idle Air Control sensor (which can be cleaner with carb cleaner), or a faulty EGR valve which I was recently told by an old timer at NAPA that they rarely fail....And for me just recently it was the most obvious, faulty plug wires...but for $10 for some plugs and $20 and change for the ignition wires, I'd fully explore that before moving forwards with sensors...they're electronic, meaning no returns to the autoparts store...sucks!
How do you clear Check engine light on a Toyota Camry 2005?
You'll need to find out why it's on, use a code scanner for that. The OBDII code scanners generally allow you to clear the code after you've replaced the faulty part(s).
If the check engine light is on you can bring the car to advance auto parts and they will, hook your car up to a machine that will tell you exactly what you need to replace for free If you used CHEAP plugs this will happen. My 98 ZX2 did the EXACT same thing When i put in the cheap plugs. Put the more expensive ones in and problem solved. I would go with the Motorcraft (ford) plugs about $6 a plug...Worth it because you'll see a dramatic increase in your gas mileage.
If the check engine light on a 2000 Toyota Sienna is blinking what are the possible causes?
I believe it is blinking because there is a misfire inside the engine. Meaning that the timing is off. This could be because the timing belt may be old and the teeth are chewed and are not as rigid. That was the case for my 96 tacoma.
What causes the service engine light to appear on a 1996 Chevy Pickup?
When the computer detects a problem it turns on the light. You are supposed to find out what's wrong by using a code scanner. Borrow, rent or buy one. They are available at most auto parts retailers, and they are quite easy to use.
You can borrow, rent or buy a code scanner from many auto parts retailers, such as Checker Auto, Auto Zone and sometimes Pep Boys. If they let you borrow one they usually require a deposit while it's out. Some of the code scanners will tell you the code after you plug it in, others will flash the codes on the dashboard. Either way works but if the code is flashed on the dashboard, you'll need to look it up in the book that's included with the scanner device.
