An Illuminated Check Engine Light in Your Infiniti

by techplusaadmin June 1, 2020

The check engine light is an important warning system that all cars use. It is designed to alert the driver to an issue that is impeding engine performance or efficiency. Let’s take a closer look at this vital system as well as what it’s illumination might mean for your Infiniti.

The Function of the Check Engine Light

The check engine light is a warning system controlled by the main engine computer known as the PCM or Powertrain Control Module. The PCM will detect faults in any of the engine systems which are compromising engine performance or fuel-efficiency. Alongside this, the PCM will store relevant fault codes that can be read using a diagnostic reader, allowing you or your mechanic to locate the source of the issue easily. This leads to an easier diagnosis and a quicker repair.

Basic Checks

There are some very simple drive-error causes for check engine light illumination. Checking for these when the light illuminates can help you to avoid an unnecessary trip to the auto shop.

First, check that the gas cap is tightly screwed on. If the gas cap is loose or won’t tighten, then you’ve probably found your cause for the check engine illumination. Usually, once the cap is properly affixed, the light will reset itself.

If you’re comfortable inspecting under your Infiniti’s hood, then check your car’s oil levels. Next, check that the battery terminals are secure. You can also check the air filter box and have a general look for any part that appears loose or damaged.

Another simple cause for check engine light illumination that few articles talk about is a poorly fitted floor mat. If your driver’s floor man isn’t properly secured or is ill-fitting, then it may press upon the gas pedal when you press on the brakes. Some cars have counteracted this issue by implementing a safety feature that prevents both pedals from being pressed at the same time, but not all cars have this, so it is worth checking.

If after making these inspections, the check engine light doesn’t reset itself, then you’ll need to visit your local mechanic for further diagnostics.

Also, if you notice check engine light illumination after you’ve recently taken your Infiniti to the shop for service, take it back to them. Most auto repair shops have mileage or time-based guarantee which will likely cover any issues caused in a shop.

Preventative Steps

There are some preventative measures you can take to help reduce the likelihood of having to deal with check engine light illumination. Prevention is the best action you can take, so let’s take a closer look at these:

● Never overfill your gas tank. When you’ve topped up your gas make sure that the gas cap is screwed tightly.
● Top up your engine oil often and make sure that it is changed out regularly in accordance with your Infiniti owner’s manual. Many engine issues are caused by expired engine oil.
● If you replace the air filter, be sure that you install the new filter properly. If the filter isn’t properly installed, it will allow unfiltered air inside your engine, which will be full of dust and grime. This will damage the mass airflow sensor and also contaminate other engine parts, too. Therefore, if you’re unsure of how to install an air filter, it is best to leave it to the professionals.
● Keep up to date with regularly-scheduled maintenance appointments.
● Practice good maintenance practices. Change out old spark plugs, and check for faulty wiring.
● Repair any damage to your engine undercover to prevent corrosion of the electrical systems.
● When undertaking repairs, make sure that only original parts are used. Aftermarket parts tend to be lower quality and may have compatibility issues too.

Tech Plus Automotive is Here to help

If your Infiniti’s check engine light illuminates and you’re not sure where to turn, visit our friendly team of expert technicians at Tech Plus Automotive. If you drive in or around Phoenix, Paradise Valley, McCormick Ranch, or Scottsdale, AZ, then we’re your local one-stop-shop for quality and reliable auto repair services. We’ll also give you sound advice to help you to prevent future warning signal illuminations, too. Call our customer service team today to find out more.