Place that would do check engine light for free

[mafiastyles]

I live in brampton, stop by Toyota dealership is was closed by 6pm. Anyone know a place that will read the fault code for free. Brampton/Mississauga Area.


Thanks for ur help

[bug]

Check engine light lighting is usually caused by a faulty/dirty oxygen sensor. It can also come on if the gas cap is loose. I've had that happen to me once after filling up.

[CRXGSR]

Check engine light lighting is usually caused by a faulty/dirty oxygen sensor. It can also come on if the gas cap is loose. I've had that happen to me once after filling up.

Where the hell are you getting this information from? CEL can come on due to ANY number of reasons. There is really no "usually caused by"... For example, misfire, any non-functioning sensor, any irregular EVAP device, anything causing emissions to surpass 50%, etc...

[Shaner]

Where the hell are you getting this information from? CEL can come on due to ANY number of reasons. There is really no "usually caused by"... For example, misfire, any non-functioning sensor, any irregular EVAP device, anything causing emissions to surpass 50%, etc...

There is a "usually" with certain cars.
Cavaliers/Sunfires (which I have) regularily have the check engine light come on due to the oxygen censor and/or a loose gas cap. My check engine light has been on for about 4 years, but the Pontiac dealership swears up and down there is nothing wrong with it.
I can't imagine they would lie to me about that. I took it there after the warranty ran out, so they'd have no reason to lie.

Other cars throw the check engine light for other reasons. There are common causes with a lot of cars, but those causes vary from car to car.

[ichpen]

I live in brampton, stop by Toyota dealership is was closed by 6pm. Anyone know a place that will read the fault code for free. Brampton/Mississauga Area.


Thanks for ur help

Some cars allow you to read the code without the use of a computer plugged in (usually reading a series of CEL blinks by pressing the gas pedal a number of times). I would recommend you go search on forums for your vehicle. The numeric code is quite universal and can be translated to an actual message with a simple internet search.

Alternatively you can buy a $20 ebay CEL aparatus that plugs into most cars.

BTW, CEL can mean any number of malfunctions with any number of sensors i.e. oxygen, abs, maf, knock sensor, oil temperature etc etc. It's not exclusively an O2 sensor light...

[mannyb]

My CEL on my 2001 Infiniti G20t was due to a faulty rear O2 sensor.

[deep]

I have had multiple bad readings due to the O2 sensor as well in my Taurus. So maybe "usually" should read "often" instead.

[B0000rt]

I'm sure the MOST often reason for the CEL lighting up, is...


*drum rolls*


Not placing your gas cap back on your gas nozzle!

[mafiastyles]

Well i drive 2001 toyota camry LE 4cyl, i checked the gas cap and it was tight, checked oil and everything else it was fine. i think parts source does it for free. Below from there web site:,


Need a special tool? We'll lend it to you - ask about our FREE Loan-A-Tool Program. Need to look something up? We can help with that too with our Mitchell on Demand automotive database with information on hundreds of repair jobs... and print out detailed schematics absolutely FREE! Just need to get your battery or alternator checked, ask about our FREE Electrical Testing Program


But before i go i disconnect the battery maybe it will rest the light, just have to do my radio presents again.

[B0000rt]

Well i drive 2001 toyota camry LE 4cyl, i checked the gas cap and it was tight, checked oil and everything else it was fine. i think parts source does it for free. Below from there web site:,


Need a special tool? We'll lend it to you - ask about our FREE Loan-A-Tool Program. Need to look something up? We can help with that too with our Mitchell on Demand automotive database with information on hundreds of repair jobs... and print out detailed schematics absolutely FREE! Just need to get your battery or alternator checked, ask about our FREE Electrical Testing Program


But before i go i disconnect the battery maybe it will rest the light, just have to do my radio presents again.

Wow, didn't know that. I've been having a CEL for the past 5 months, which I'm pretty sure it's just my transmission and it's torque converter clutch. I wonder if they'll loan us a code reader?

[gilboman]

Check engine light lighting is usually caused by a faulty/dirty oxygen sensor. It can also come on if the gas cap is loose. I've had that happen to me once after filling up.

wtf are you talking about? there could be many many reasons for it to throw a CEL. there is no universial usual cause of cel

[gilboman]

I have had multiple bad readings due to the O2 sensor as well in my Taurus. So maybe "usually" should read "often" instead.

"often" if the OP's car is your tarus

[Bullseye]

Go to Canadian Tire, buy one of the OBD-II code readers for about $200, use it, then return it saying it wasn't what you thought it was.

I've actually bought one on eBay, used it, then sold it for more that I paid for it!

[TrevorK]

But before i go i disconnect the battery maybe it will rest the light, just have to do my radio presents again.

The light will go away when the battery is reset, and come back when the problem that caused it comes back.

[Hula]

Where the hell are you getting this information from? CEL can come on due to ANY number of reasons. There is really no "usually caused by"... For example, misfire, any non-functioning sensor, any irregular EVAP device, anything causing emissions to surpass 50%, etc...

Actually ..... almost 1/2 of all CEL's are "o2 sensor" based in the auto industry. A good portion afterwards are gas cap caused. Though "usually" isn't a safe term to use, the guy's not as wrong as you may think he is!!