The Dreaded Check Engine Light

By Mister Transmission

Some of us are old enough to remember the pre-1981 vehicles, which weren’t equipped with on-board diagnostic systems. Much has changed and now we can learn about problems before they ruin our ride!

Cars born before 1981 would indicate a malfunction usually through one of four “idiot” lights, which would tell us that our car had lost oil pressure, over-heated, stopped charging the battery, or lost brake pressure. The problem with these lights is that they usually came on after the damage was already done due to their simplistic sensor systems.

Also, these sensors and systems didn’t give a hoot what was coming out of our tailpipes as far as pollution was concerned. That changed in 1981 when new regulations came out requiring catalytic converters for all domestic passenger vehicles.

The Advent of On-Board-Diagnostics

It was taken a step further in 1996 when automakers were required to upgrade their vehicles to a sophisticated system consisting of central processing units (CPU), sensors, actuators and valves known as OBD II (On-Board Diagnostics). When a problem with the vehicle’s engine, transmission, emission system or any of the myriad of sensors monitoring the aforementioned systems occurs, a code is stored in the computer and the “engine light” is illuminated to alert the driver.

As you may know, almost everyone (including the manufacturers who should know better) refers to the light as “the engine light”. This is one of those situations where one of the first manufacturers to equip their vehicles with on-board diagnostic (OBD II) systems called it an engine light, and now it’s the generic name for lights of that nature.

A few manufacturers did refer to it more accurately by calling it the Malfunction Indicator Light (MIL), since it true purpose is to indicate a malfunction in the systems the computer monitors, but not many.

The problem causing the light to come on could very well be a transmission fault. A technician would perform a scan to retrieve the trouble code from the computer and then cross-reference it to determine what area is at fault.

Where most technicians make an error, is to find a transmission-related trouble code in the computer, and then assume that it merely needs a flush, service, or “magic potion” poured into it to correct the problem. Fluids or aftermarket additives cannot fix worn clutch plates, broken gears or defective solenoids… only replacing them can.

When your vehicle has a transmission-related fault code in the computer, let us remove the pan for a visual inspection. If there is excessive metal on the magnet and/or the fluid is burnt, the transmission is going to need to come out.

If your engine light is on, please contact your local Mister Transmission and book an appointment for our FREE 21-Point Multi-Check Inspection which includes removing the pan on your transmission.

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Customer Reviews
Great people Great Service
Nachater Samra
Great people Great Service
Date: May 26, 2024
Website: Google
Hello, my name is Dickson,...
Dickson Sendagire
Hello, my name is Dickson, I was having a problem with my van with a transmission but when I took it to mister transmission they fix it And it runs perfect. There Awesome and nice guyz.
Date: May 25, 2024
Website: Google
Great service at an unbeatable...
Alex Gregory
Great service at an unbeatable price - Will return for future service! Ken was a pleasure to work with, very patient and knowledgeable. Thank you!
Date: May 25, 2024
Website: Google
They’re very helpful we were...
Harjeet Alampur
They’re very helpful we were going back to pei but encountered error in vehicle so we went to them and they helped us.
Date: May 24, 2024
Website: Google
Had a wonderful experience at...
R R.
Had a wonderful experience at the Dixie Road location managed by Aki Sahaye. My very first impression from speaking to him on the phone was that he was very respectful. I met him when I took my vehicle to his shop, and I must say, he is a very sincere and caring person. He takes pride in his work and the employees' work, and what he delivers in terms of customer service and satisfaction. He was very patient in explaining the details of the issues, and he and the few staff member I saw were all very courteous and friendly. They constantly kept us updated with their investigations of the problems, advice and estimated cost. We were expecting that we would have to do an entire change over of the transmission, but it was the sensor, battery and oil leak issue. They were honest indeed in advising of the issues. Aki was very reassuring, in terms of contacting them back if I have any problems, and I was given 3 months warranty on the work done. They looked at the vehicle very quickly and within three days I got back my vehicle as they had to order a part from the dealer and wait for it. They were expensive, but the trust, reliability and other factors mentioned above have to be taken into consideration. I left there with a feeling of being treated and respected as a family and would definitely recommend them for any transmission issues.
Date: May 24, 2024
Website: Google
Lorenzo and dann are extremely...
Harsh Vasudeva
Lorenzo and dann are extremely experienced with all the stuff and very reasonable prices.
Date: May 24, 2024
Website: Google
Final cost was very close...
Sean Magnuson
Final cost was very close to the estimate. Cecil was honest and upfront about everything. Would I have liked it to be cheaper.......sure. But it is what it is. Thanks again
Date: May 24, 2024
Website: Google
We went to Mr. Transmission...
Ayse Yurt
We went to Mr. Transmission thinking there was an issue with our trucks transmission. Bryan was so honest and transparent - told me that my trucks transmission was absolutely fine and actually told me what the problem was. I appreciate his honesty and kindness! You don't always find that kind of service but when you do, it definitely needs to be recognized! 100% recommend! Thank you again!
Date: May 24, 2024
Website: Google
Another garage quoted me up...
Shannon Paulitzki
Another garage quoted me up to 5k for a new transmission. Took car to this place for a second opinion. They told me it was the transmission lines, fixed it for under 900.
Date: May 23, 2024
Website: Google
My car is 2019 nissan...
권세우
My car is 2019 nissan kicks. Iast month I changed transmission oil at Car center located Dundas street. I didn't know that about they putted wrong transmission oil. My car engine check light on and when I drive crz shaking... Today in the morning I went to Mr transmission and met Maki. He is manager very honest guy.. He checked my transmission. He took out transmission fan and show to me.. Fan is clean means transmission is no damage...he said. He changed transmission oil(right one) and filter charged me just $500 . Unbelievable my all problems gone. Excellent condition now. I recommend ppl who have transmission problem, go to Mr transmission and meet Maki. You can save money and time. You will be happy very. Thanks again Maki..
Date: May 22, 2024
Website: Google
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