Trac off light and engine light came on at same time when I turned the engine on.

My trac off light and engine light came on at the same time once I started my car this morning and I got it checked twice and they said it was the evap system but I want a third opinion just to be sure
My car's transmission is unknown to me.
Experienced mechanics share their insights in answering this question :
Hi there. The Trac Off light is for the traction control. The computer has turned off the traction control for a various reason. The controller could be malfunctioning, the vehicle speed sensor could be malfunctioning, or the wheel speed sensors could be malfunctioning. Since the engine light is on, check for any codes that are stored in the computer for a starting place for diagnosing your traction control being disabled. If you need further assistance with the Trac Off light being on and the engine light being on, then seek out a professional, such as one from Your Mechanic, to help you.

How to Identify and Fix Common car Problems ?

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Check engine light flashing and traction control light coming on at the same time could be alerting you of a misfire or a malfunctioning traction control system. Malfunctioning vehicle speed sensor or wheel speed sensors could also be causing the lights to come on.
“TRAC OFF” Indicator

Indicates that Traction Control is off. The TRAC system switches the traction control on/off to prevent wheelspin and further downshifting. To turn the TRAC system off, quickly press and release the button. The TRAC OFF indicator should come on.

VSC System OFF and Check Engine Light is On

VSC stands for “Vehicle Stability Control.” It is likely that “Traction Control” will not work while this light is illuminated. On some vehicles, the “skidding vehicle” or “TRAC OFF” light may also be lit as well.

anti-lock brake system

or a faulty pedal sensor, then it can cause both (or either) of the traction control or Check Engine lights to come on. Unlike a loose gas cap or a fussy air filter, this one can be quite serious and is one of the reasons why you don`t want to ignore those lit warning lights.

Because the ABS and traction control often share the same module, a problem with one mechanism might be indicated by a light for both. If the brake system is malfunctioning, the traction control light might come on as a result. The light for your ABS might also come on if the brake fluid is low.
The TCS light will turn on and off when the system is activated to give you better traction in bad driving conditions. If it remains illuminated even after you`ve restarted your car, it could indicate a malfunction. In these cases, you should drive with caution and take your Sierra for a check-up when you can.
The check engine light is constantly on: Your vehicle`s onboard diagnostic system has determined something is wrong and needs to be fixed. Although your vehicle may seem to be operating fine, it`s best to bring it in for service as soon as possible to prevent additional issues.
It is safe to drive your Toyota while the VSC OFF light is on, however, we recommend cautious driving, especially in poor weather.
“VSC Off” and “VSC TRAC” lights will often come on when an error code triggers the Check Engine light. It doesn`t necessarily mean there is an issue with those systems. If they all showed up at the same time, it`s likely that diagnosing the cause for the Check Engine light will fix them all.
Press the gas pedal 3 times in quick succession. Then, turn your engine on all the way and let it run for a minute. The TCS and ABS lights should reset and go away if there isn`t any underlying problem with your traction control system.
When this warning indicator light comes on in the dashboard, this could be an indication of several issues such as faulty wheel speed sensors, a faulty steering angle sensor, a faulty rotational speed sensor or a problem with the steering rack.
If the traction control light won`t turn off, there can be some reasons. One reason could be that the fuse for the traction control system has blown. Or it could be that there is a problem with the traction control sensors causing the light to stay on.
Often, the computer will apply the brakes just a little bit to slow that out-of-control tire down until the tread can get some bite on the road and prevent it from slipping. If further steps are required, traction control can even reduce engine power and torque until the tire slows down enough to get a grip.
A failing wheel speed sensor will turn off your vehicle`s traction control, stability control, or any other driver assist feature. Sometimes, a damaged wire could also prevent the sensor from sending data to the control module.
A loose gas cap is one of the most common reasons for the check engine light to go on. Check that your gas cap is screwed on securely and that it`s in good condition. If you have a tank of bad gas in the car, your check engine light may come on.
Sometimes, the check engine light comes on to let you know that there`s a problem with the car`s internal diagnostic mechanism. That means the system could be “finding” a problem that doesn`t exist, or it could be that loose wire systems are creating a false positive in the system.
How long can you drive with the check engine light on? Once you see the check engine light, it is safe to drive with the light on for 50 to 100 miles. This is because if the issue is with the sensors, then this will buy some time for it to reset, turning the check engine light off.
2012 Toyota Corolla Check Engine Light Flashing

Other common reasons for a Check Engine Light are faulty head gasket, dirty mass airflow sensor, damaged oxygen sensor, faulty emissions control part, a malfunction with the fuel injection system, or defective spark plugs to name a few.

A flashing orange light means that there is a problem that could affect how the car drives or handles, such as an engine misfire. You might be able to feel your car shake, or the engine could suddenly sound different. If this light comes on, you should take your car to be inspected immediately.
This is a sign you should stop driving and have your car looked at by a mechanic as soon as possible. Use your best judgment on whether to call a tow truck or drive yourself to a nearby repair shop. Is the light flashing? In many vehicles, there are two types of check engine lights—a solid light and a flashing light.
If the check engine light illuminates, it will either blink or remain constantly illuminated, depending on the problem. A blinking light, or in some cars a red light instead of a yellow or orange light, indicates a problem that needs immediate attention. Either way, you should have the vehicle checked by a mechanic.
Vehicle Stability Control is, technically, what VSC stands for. When suddenly turning onto slippery roads or swerving, a driver can better control skidding thanks to this system. A warning light on the dashboard will flash when this system is on/activated.
Well, VSA stands for Vehicle Stability Assist and is Honda`s computer system that helps ensure the tires have traction to help keep you on the road. When both the check engine light and the VSA light are illuminated it means that the computer has detected there may be a fault in the system.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Battery light goes on when I start car then turns off, if I rev engine light comes back until rpms go down. Abs goes comes on/off
ANSWER : Batteries can die due to faults in the charging system so ideally a suspected "faulty" battery should be load tested before a decision is made to condemn it. The only exception to this rule is if the battery is already clearly "old" (greater than 5 years) but even then once you put a new battery in, as a replacement for a "dead" battery, you have to comprehensively check out the charging system. Diagnostic Trouble Code P0460 will result in disruption of the dashboard fuel gauge’s ability to accurately report your tank’s fuel levels. The fuel gauge readings may be erratic, or read somewhere off scale. Vehicles equipped with a low fuel warning light feature may also suffer from erratic low fuel warnings in the event of a code P0460. Unless the P0460 code has been reported alongside other trouble code, all of the vehicle’s essential systems should otherwise function normally. I would recommend that you request a check engine light diagnostic to first resolve the fault causing the P0460 code to set. The check gas cap light warning light could be due a faulty gas cap and/or small leaks in the EVAP system.

Okay so when I turn my lights on at night my brake lights do not work, when I don’t have my lights on they work fine.
ANSWER : Hi there. Based on your inquiry, it’s highly probable that you have a damaged light switch or some electrical fault inside the turn signal relay. However, it’s also possible that the brake switch above the brake pedal could also be the source of your problem. Due to the fact that multiple electrical components might be causing this issue, it’s a smart idea to first have a professional mobile mechanic complete a brake lights are not working inspection, so they can determine what’s causing all of these issues and recommend the right repairs.

2012 equinox reduced power light engine light and traction light came on. Lost a lot of power got home and all light except engine
ANSWER : Your car has what is called a "safe mode" that will be engaged by the computer when it detects that something critical has gone wrong related to any of the major components in your engine chassis or power train. This may be related to a number of things, most of which should have been registered in the computer when the check engine light came on. I recommend having an expert from YourMechanic come to your location to inspect your check engine light and diagnose any codes registered by your vehicle’s computer.

Trac off light and engine light came on at same time when I turned the engine on.
ANSWER : Hi there. The Trac Off light is for the traction control. The computer has turned off the traction control for a various reason. The controller could be malfunctioning, the vehicle speed sensor could be malfunctioning, or the wheel speed sensors could be malfunctioning. Since the engine light is on, check for any codes that are stored in the computer for a starting place for diagnosing your traction control being disabled. If you need further assistance with the Trac Off light being on and the engine light being on, then seek out a professional, such as one from Your Mechanic, to help you.

Check engine light refuses to go off after engine replaced
ANSWER : Hello there, you have a long series of issues going on with your 2013 Hyundai Sonata. If you keep getting a repeating oil light on than there is likely a fault in that system.

Since this fault has lasted after the engine was replaced it could be a oil pressure sensor, wiring harness fault, ECU fault, oil pump, oil strainer clogged, or low oil pressure.

To diagnose this issue properly you need a complete vehicle inspection to start from square one and identify the root cause of all this.

Car started to slow down and then the check engine light, battery, and engine oil light came on. What could cause this?
ANSWER : Hi there. It is possible that the battery cable came loose or the wires to the oil pressure sensor has came loose or failed. Check the battery cables and make sure that the terminals are tight and clean. Check the wires to the oil pressure sensor and make sure that they are connected and not broken. If everything looks good, then the oil pressure sensor may have failed. Plus, check the computer for codes and see what is stored. This will lead you to the part that could have failed. I recommend replacing the oil pressure sensor then checking to see if the lights will go out. If you need further assistance troubleshooting your vehicle, then seek out a technician, such as one from Your Mechanic, that can assist you with the warning lights that came on.

What if the VSA turns on during startup and doesn’t turn off and what I do is I turn off the engine and start again. This time aro
ANSWER : Hi there. If the VSA light is coming on and shutting off but does not come back on until the next start, then this is a normal condition as the light is telling the drive that the VSA system is deactivated. There is a switch under the dash to turn on and off the VSA system. Try the switch to see if the light continues to come on or off. If the same issue is occurring, then the wheel speed sensors or the VSA switch has failed. If you need further assistance with your warning VSA light coming on, then seek out a professional, such as one from Your Mechanic, to help you.

I Had my oil changed on 5/28/16. On 5/31/16 the check engine light came on. On 6/5/16 the low oil pressure turn off engine came on
ANSWER : Hello,

From what you describe it would not appear to me that something went wrong during your oil change.

If the level is correct on the dipstick and the engine runs and sounds okay, then it is probably something else.

A likely cause for a problem such as this can be a defective oil pressure sensor, or wiring.

Virtually all vehicles have a dedicated oil sensor that will monitor oil pressure of the engine and set off a warning light if it falls to low, in order to protect the engine. If the sensor fails however, it can send a false reading to the computer or gauge, and cause the warning light to activate by mistake.

I would recommend having the vehicle’s oil pressure sensor tested for accuracy, and if necessary the engine’s oil pressure to make sure that there is no issue with the oil pump or system of the engine, as unlikely as that may be.

I’d recommend having a certified mechanic inspect the vehicle for you, they will be able to check for these failures and diagnose your Check Engine Light in order to get your car running normally again.

Regards,

Eduardo
YourMechanic