What Is At Check On Nissan Altima?

The automatic gearbox has malfunctioned in some way, making it impossible for the computer to determine whether it is in gear or not, which prevents the engine from starting. To get it diagnosed, you must take your automobile to a dealership.


The check engine light alerts drivers to problems ranging from loose gas caps to more serious failures like a damaged catalytic converter or another issue.


The rationale for a CVT check light won’t apply to your car. Your vehicle lacks a CVT.

When the automobile starts and runs without issue and the transmission feels as like it is shifting smoothly, the suggestion of a transmission overhaul seems very dramatic. It makes great logic to mention the crank sensor. The starting point is also the least expensive.

Hello, this is my first post. just checking to see if anyone had solid knowledge on this. The search function on this forum was useless to me.

When I tried to turn the automobile on, it just sputtered. I gave it another shot, same result. There was no real cold outside. never before occurred. Despite having over 100,000 miles on it, the engine is in excellent condition. When I googled the “AT CHECK” engine light, I found the image that is linked below. According to the light’s description, it is a “Continuously Variable Transmission, CVT check warning light” (if so equipped).

Additionally, the light has stopped coming on, and the OBDII scanner I used returned no codes.

I then drove another vehicle to perform errands. Later, my father claimed he checked it out and it started without a hitch. I went to check it out, and it also began perfectly. I did read the following in answer to a problem with the “AT LIght” that was similar to mine, but I wanted to double-check with you guys because I’ve never heard of this.


When you turn the key off and on again after the trans sends the motor into fail safe mode due to a power loss, the trans resumes operation until it encounters that failure once more. Slipping transmission or an internal problem may require a total rebuild if the car is acting as you describe.

He asked when the transmission fluid and filter had last been updated. You should have already had the transmission serviced given that you have surpassed 100k kilometers. To determine whether the fluid is good, you should check the level and color. The vehicle’s starting problems could be caused by something entirely different. I couldn’t find anything about beginning problems from the URL you gave at the end of your first post; all I could find was information about how the transmission was causing the vehicle to perform poorly on the road. The next time you see the “AT CHECK” light, hopefully you can use an OBDII scanner to receive a proper code and a better understanding of what is wrong with your car.

Sorry, it was completed at the dealership at least two hours ago. Just out of curiosity, how frequently do you recommend they be completed? The AT indication light barely momentarily illuminated; I guess I’ll just keep it nearby. Otherwise, it might have been an isolated incident.

The conventional A/T (Automatic Transmission) in my 2003 utilizes NISSAN Matic “D” fluid, however i’ve read that the A/T CVT fluid should last a lot longer or never need to be changed. I’m not sure which recent Altima models were the first to use the more sophisticated A/T CVT, but in any case, everything should be included in that service manual.

Nissan Check Engine Light Frequently Occurring Issues * Loose Gas Cap: Your gas cap is loose, cracked, or just missing

A damaged head gasket, a malfunctioning fuel injection system, a dirty mass airflow sensor, and poor emissions are other frequent causes of a check engine light.

Has the Nissan Altima’s check engine light come on?

If the problem or code that caused your 2020 Nissan Altima’s check engine light to come on is resolved, it will often turn off by itself. For instance, if a loose gas cap was the reason your check engine light illuminated, it will turn off once the cap is tightened.

Are Nissan Altimas reliable vehicles?

Is the Nissan Altima a Reliable Vehicle? A good midsize vehicle, the 2022 Nissan Altima is. It rides comfortably and gets outstanding gas mileage estimates. The Altima’s interior features simple infotainment controls and roomy seating for up to five individuals.

What does the Nissan Altima’s master caution light mean?

The Master Warning Light will illuminate if you have a loose fuel cap, an open trunk or door, or low gasoline.

What are the Nissan Altimas’ biggest issues?

The Altima’s continuously variable gearbox is where the majority of its issues lie (CVT). Owners complain about a shuddering or jerking sensation when accelerating as well as a delayed throttle response. even experienced transmission failure on some models.

What does Nissan’s AT check mean?

The automatic gearbox has malfunctioned in some way, making it impossible for the computer to determine whether it is in gear or not, which prevents the engine from starting. To get it diagnosed, you must take your automobile to a dealership. It was useful to 40 persons. 90

What does the Nissan Altima’s service engine soon message mean?

Something is amiss when the check engine and service engine soon lights come on. Depending on the make and model of your car, you’ll see a different icon. It could be something minor, like a loose gas cap, or it could be something more significant, like a problem with the fuel system. When the light is on, you should bring your car in as soon as possible to get it checked.

A serious problem may be present if the service engine soon or check engine light is flashing. An engine misfire that causes the issue could harm the catalytic converters. It is highly advised that you have your car serviced right away if your check engine light is blinking.

Nissan Altimas’ lifespan

Response given by. Whether you drive a sedan or a coupe, the Nissan Altima is a fantastic car to own. You can anticipate your Nissan Altima to last 200,000 to 300,000 miles, or 13 to 20 years, thanks to Nissan’s commitment to quality and performance.

Will a Nissan Altima oil change cause the check engine light to illuminate?

A Nissan Altima’s service engine soon light can be critical, but it might not be as terrible as you believe. The light is typically a sign that the engine needs to be serviced because something is wrong with it.

It might also indicate that the vehicle need routine maintenance, such as an oil change. You should take your automobile to a professional to have it looked at if the light illuminates and stays illuminated.

You might not need to do anything when the light turns on and then off. Though it’s usually advisable to err on the side of caution, take the car to a repair nevertheless if you’re hesitant.

I don’t have a scanner, how can I test my Nissan?

While turning the ignition key ON, press the Trip and Reset buttons on the odometer. Release the odometer Reset and Trip buttons after turning the key to the ON position to see if the Diagnostic Trouble Code, or DTC, shows up on the odometer display.

You’ve generated a diagnostic trouble code without a code scanner if the error code appears. Make a note of each fault code and look up the DTC definitions in your manual.

What does the red car icon on the Nissan dashboard mean?

When your Nissan’s warning light is red, you should take it in for service right away. A red warning light denotes a serious system malfunction, such as an overheated engine or a failing brake system.

What Nissan issue is the most prevalent?

Transmission-related issues account for the bulk of typical Nissan troubles. Nevertheless, you should continue to watch out for other common Nissan issues like engine failure, broken interior parts, and steering system issues. A

Nissan is regarded for producing some of the most dependable subcompact automobiles on the market. Nissan owners who follow their maintenance routine religiously can anticipate their vehicles lasting for many years. However, the frequency and expense of necessary repairs raise concerns about the brand’s general dependability. A

Drivers may reasonably be reluctant to take Nissan at its word when it guarantees reliable autos given the company’s recent history of scandals, litigation, and exposed deceptions.


One of the reasons why it’s crucial for Nissan owners to get knowledgeable about the typical issues that their cars could encounter is because of this.


What does a car check mean?

Automatic transmission is abbreviated AT. The car might move if you attempt turning the key on and off again, but as soon as it detects the problem once more, it will enter limp mode. Therefore, you are helpless without the necessary diagnostic tools.

At check, what does that mean?

The second, AT CHECK, has a more general meaning, where any transmission issue might result in the warning. A transmission fault indicator is also present here. Designed to seem like a transmission when viewed from the side, it is yellow and amber.

What is the most typical issue when the check engine light is illuminated?

Your oxygen sensor may be faulty, which is one of the most frequent causes of your check engine light. Western Washington’s local auto repair shop can rapidly replace it for you, restoring your car’s capacity to gauge unburned oxygen in the exhaust system.

Your engine will continue to use more fuel than it should up until you replace this component, which will decrease your car’s fuel efficiency. A new oxygen sensor will also assist you in avoiding harm to your spark plugs and catalytic converter.

Is it legal to drive with the check engine light on?

Don’t freak out if the check engine light comes on while you’re driving! Keep an eye out to observe if the car is driving in any unusual ways. The question “Can you drive a car with the engine light on?” may be on your mind. The performance of the vehicle and the underlying cause of the check engine light’s lighting will determine whether it is safe to continue driving. Simply remember to get your automobile checked as soon as you can when the light comes on. Don’t put off necessary engine maintenance!

You can keep operating the vehicle if nothing seems unusual. Anything from a bad oxygen sensor to a poor MAF sensor could be the root of the problem. It can also indicate that your catalytic converter has stopped functioning.

What does the automatic transmission warning light mean?

When there is a problem with the transaxle, the indicator or light illuminates. The automatic transaxle warning indicator or light will illuminate if there is an electrical issue with the transaxle. If you continue to use your Mazda in this state, your transaxle might be harmed.

How do you check the level of transmission fluid?

Leave the car in park on a level surface while the engine is warmed up. The dipstick should be removed, cleaned, replaced cautiously, and then pulled back out again. Compare the fluid level to the “full” and “low” or “fill” lines on the dipstick to see how high the fluid rises on the stick.

You can learn a lot about the condition of your car’s transmission from the color of the transmission fluid.

Can I drive with a warning from an automatic gearbox?

Even though the car might not drive any differently with the light on, you should still have it looked out as soon as you can to prevent more damage. Long-term driving with this warning light on is likely to drastically shorten the transmission’s lifespan by wearing it out. Some automobiles may enter what is referred to as a “alimp home” mode. The vehicle’s top speed will be restricted by the “limp” mode to lessen the burden on the transmission.

Our qualified specialists are always available to help you find any problems if your automatic transmission light is on.