Brake pads & Rotors specials:


Check engine light on diagnosis while you relax at home or continue to work.

  • 12 months or 12,000 miles warranty*
  • An expert mechanic will come to your home to fix or diagnose your vehicle.
  • Our mobile mechanics offer services 7 days a week.

Check Engine Light On Diagnosis

When your vehicle's onboard computer detects an issue with the engine or transmission, it immediately activates the check engine light. This could mean anything from a minor setback like a loose gas cap to something more serious such as an internal engine failure. Unaddressed issues can compound and morph into time-consuming repairs that end up costing you in both money and effort - which is why it's important not to ignore any warning signs when they arise!


What are the common reasons for the check engine light to come on?

Loose Fuel Cap: Neglecting to properly secure the gas cap is a widespread mistake. Don't forget that reassuring "click" when you screw it back onto your vehicle! Even if you neglected to replace the cap, identifying and resolving this problem can be incredibly simple.

Faulty Oxygen Sensors: Your vehicle's emissions system contains oxygen sensors to detect any exhaust issues. When there is an issue with the emission levels, it will likely trigger your Check Engine Light alert. It's possible for these sensors to malfunction and give incorrect readings, in which case they may need replacing.

Other components of emissions: In numerous instances, the check engine light being on is usually due to an issue with your car's exhaust system. It could be a leak or something wrong with the catalytic converter; but another sensor that can quickly trigger this warning indicator is the mass airflow sensor (MAF). Consequently, it would be prudent for you to have your exhaust system examined by a certified mechanic near you if you happen upon such a scenario.

Spark Plugs or Ignition Coil: Quite often, the check engine light comes on when there is an issue with one of your spark plugs or ignition coils. If something isn't firing properly, you can count on a decrease in engine performance - and it's the check engine light that will alert you to this problem.

Wiring Harness: It's no secret that the internal wiring of your vehicle is critical in order for it to start and remain running correctly. Any weak connections or frayed wires can cause a lot of issues and could potentially make the check engine light come on. From the battery, spark plugs, to even its ignition system; each are equally important parts when it comes to an efficient ride experience!

Transmission: When it comes to transmission issues, you need to be alert for various warning signs. Your car could have its own specialized indicators of trouble but pay attention if the check engine light turns on too since that may mean there is something wrong with your transmission. To remedy this situation, you might just require a fluid service or it could point towards more extensive internal damage that needs fixing.

Cooling System: When a car's cooling system is malfunctioning, not only will its own temperature warning lights and gauges light up as it overheats - but the check engine light may also be illuminated.

Fuel System: If your car's engine is not receiving the appropriate amount of fuel or if the filter needs to be changed and causes contamination, your check engine light will come on as a warning that there are problems in regards to the vehicle's fuel system affecting its performance.

Engine Oil Levels: Subpar oil levels or contamination of old oil can lead to engine troubles and a decrease in performance, enough that the check engine light may become illuminated. This could be from an overdue oil change or any leaks within your vehicle's fluid systems.

A red or flashing check engine light is an urgent sign that your car needs to be looked at by a professional mechanic near you. They will be able to accurately diagnose and inspect the parts of your vehicle in order to find the exact cause for why the warning signal has been triggered, from one of these common sources. Don't ignore this critical indication - take action today!


Is it okay to keep driving with check engine light on?

It is generally not recommended to drive with the check engine light on, as it indicates that there is a problem with your vehicle that needs to be addressed.

Although the matter may not be linked to your car's security, driving with a check engine light on can still cause long-term harm to various parts of the motor or other components, thus incurring bigger repair costs eventually.

Furthermore, driving with the check engine light illuminated may result in your vehicle flunking an emissions test or inspection based upon the rules of your state or nation.

If the check engine light illuminates, it is essential to have a professional mechanic inspect your car immediately to identify the source of the problem and prevent more serious damage. By continuing driving with this warning signal active, you risk incurring expensive repairs due to permanent engine or component destruction. 


Why is my check engine light on but nothing seems wrong?

Even if nothing appears to be amiss with your car, the check engine light may still illuminate - making it important for you to address any potential issues in case they could worsen.

A faulty or broken sensor is one of the most typical causes for a check engine light to be activated. The vehicle's computer system continuously monitors various sensors throughout its systems and if it finds that any of these are not performing properly or sending inaccurate data, then this will trigger the car's check engine warning light to come on.

Another possibility is that this issue is sporadic, occurring only when specific conditions are met or at a certain time. This can make it difficult to identify the problem since mechanics may not encounter it during their inspections of the vehicle.

Though the problem may not be noticeable right away, it is still pivotal to have your vehicle looked at by a knowledgeable mechanic as quickly as possible in order to identify what has caused your check engine light and stop any potential problems from occurring.

Customer Reviews

Other Services Offered

Cars we service

Mercedes Benz