Q: What does it mean if the Check Engine light comes on in the dash?

asked by on

What does it mean if the Check Engine light comes on in the dash?

Your car is pretty sophisticated. The computer systems are capable of monitoring a number of different aspects of operation, including the exhaust/emissions system, the engine and transmission, and more. If a problem is detected, the Check Engine light is turned on. If the light comes on while you’re driving, it means that the computer has found a problem with the throttle control system, the transmission control system, the engine control system, or the emissions system.

If the light comes on and you don’t notice any immediate performance change, it may not be an emergency. However, if you do notice that the car is operating differently, it’s highly advised to pull over and have it towed. Even if the car doesn’t seem to be doing anything abnormal, have it inspected as soon as possible.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. What does it mean if the Check Engine light comes on in the dash?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car is totally dead. No sound or anything. Even power locks don’t work.

It sounds like you may have a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator charges the battery while the engine runs by generating amperage and recharging the battery while the engine turns...

Q: How do I use my cell phone to dial a number in Uconnect?

When using Uconnect phone, you can say the number that you wish to dial. If you prefer, however, you can also punch in the number manually onto your cell phone. Simply write in the number on your phone and make...

Q: Check Engine light back on

The two code are for two different issues and if both codes were not fixed, or after the repairs the engine self learn was not reset, then the light may come back on and the car not run correctly. I...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...