Is it safe to drive with engine malfunction light?

The short answer is no, it is generally not safe to continue driving with an illuminated engine malfunction light, also known as a check engine light. This warning light indicates a problem with your vehicle's engine or emissions system that requires immediate attention.

Understanding the Engine Malfunction Light

The engine malfunction light, or check engine light, is part of a vehicle's on-board diagnostics (OBD) system. When the light turns on, it means the OBD system has detected a problem with one or more components related to the engine or emissions control system. This could be anything from a loose gas cap to a more serious issue like a malfunctioning catalytic converter.

Potential Dangers of Driving with the Light On

• Increased Emissions: An illuminated check engine light often indicates a problem that is causing your vehicle to produce higher levels of harmful emissions, which can be damaging to the environment.


• Reduced Fuel Efficiency: The underlying problem triggering the check engine light can also lead to decreased fuel efficiency, costing you more at the pump.


• Further Damage to the Engine: Continuing to drive with the check engine light on can exacerbate the underlying problem and lead to more extensive and costly repairs down the line.


• Safety Concerns: In some cases, the check engine light may indicate a problem that could affect the vehicle's handling, braking, or other safety-critical systems, making it unsafe to drive.

It's important to take your vehicle to a qualified mechanic as soon as possible to diagnose and address the issue causing the check engine light to illuminate.

What to Do When the Check Engine Light Comes On

• Reduce Speed and Avoid Towing: If the light comes on while you're driving, try to reduce your speed and avoid towing or hauling heavy loads, as this can further strain the engine.


• Check for Obvious Issues: Inspect the vehicle for any obvious problems, such as a loose gas cap or visible damage to the engine or exhaust system.


• Use a Diagnostic Tool: Consider using a handheld OBD-II scanner or taking the vehicle to a mechanic to have the diagnostic trouble codes read, which can help identify the specific issue.


• Schedule a Repair Appointment: Once the problem has been identified, make an appointment with a trusted mechanic to have the necessary repairs performed as soon as possible.

Ignoring an illuminated check engine light can lead to more serious and costly problems down the road. It's always best to address the issue promptly to ensure the safety and reliability of your vehicle.

What should I do if my car says engine malfunction?

If this happens, you should:

1. Pull over as soon as it's safe to do so.
2. Switch off the engine.
3. Contact us to report your breakdown so one of our patrols can help diagnose and resolve the problem.

Can I drive my car if it says engine malfunction?

If it's solid, you're fine to drive a short distance as long as it runs normal like to the mechanic. If it's flashing, don't drive, that means something serious like a misfire. Grab a quick OBD2 scan, even a cheap one to be sure what's up.

Is engine malfunction serious?

Engine misfire can be linked to a number of problems, which range from spark plug issues to head gasket leaks. Whatever the cause, get it checked otherwise it may result in serious engine damage.

How long can you drive with an engine malfunction light?

You can drive a short distance to a repair shop if the check engine light is steady and the car is running normally, but you should not drive at all if the light is flashing. A flashing light indicates a serious issue, like a misfire, that can damage the catalytic converter, while a steady light can be caused by minor problems, like a loose gas cap, but could worsen if ignored. 
Flashing check engine light

• What it means: A flashing light is an urgent warning of a severe problem, such as a misfire, that can cause immediate and costly damage, especially to the catalytic converter.
• What to do: Pull over as soon as it is safe to do so and have the vehicle towed to a mechanic. Do not continue to drive, as this can lead to significant damage. 

Steady check engine light

• What it means: A steady light indicates a problem, but not necessarily an emergency. It could be something minor like a loose gas cap or a more serious issue that is not causing immediate performance problems. 
• What to do:
  • Check the gas cap: Make sure it is on tightly. Sometimes, this can solve the issue. 
  • Drive carefully: If you must drive, do so for the shortest distance possible directly to a repair shop. Avoid high speeds, heavy acceleration, and towing. 
  • Schedule an appointment: Get the car diagnosed as soon as possible to prevent minor issues from becoming major problems. 

This video explains what to do when you see the check engine light: 1mTorqueCarsYouTube · Apr 24, 2023