Q: Q: What does the malfunction indicator Warning Light mean?

asked by on

What does the malfunction indicator Warning Light mean?

The malfunction indicator Warning Light is connected to the On-Board Diagnostics-Second Generation (OBD II) system, which gauges the vehicle’s emissions. When the malfunction indicator Warning Light illuminates, then the OBD II system has detected an issue with the emissions system, and you should get your car inspected as soon as possible. Tip Like all warning lights, the malfunction indicator Warning Light will briefly illuminate when your vehicle is turned on. The light is only a problem if it stays lit when the engine is running.

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. Q: What does the malfunction indicator Warning Light mean?

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: Crank seal leaking

Hello! I suggest getting a second opinion of the source of the leak, because a crank seal will not leak a fluid other than oil. The leak may be from a transmission seal, which is located almost "face to face"...

Q: How do you check if readiness codes are set?

If you live in an area that requires annual emissions testing, then you’ll need to know about readiness codes. If these aren’t set, your car can’t be tested and you’ll have to reschedule your emissions test. Here’s how to help...

Q: Q: Grinding noise

If you'd like to diagnose the noise yourself try this. Cut a piece of rubber hose approximately 2' long(a garden hose or automotive heater hose will work) to use as a stethoscope. With the hood open and the engine running,...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.