When the check-engine light illuminates, it indicates there is a problem with the engine, ranging from mild to severe and seeing the check-engine light illuminating on the dashboard can arise many emotions to the surface. Many will get a little anxious when the light pops on, especially when you are driving to the next destination. The light coming on can become overwhelming if there are any accompanying smells or sounds manifesting. Our experts can run a diagnostic to find the underlying issue and today, we at A-1 Automotive Repair would like to share the most common reasons as to why the check-engine light has turned on.
Mass Air Flow Sensor Problems
An indication that something is affecting the mass airflow sensor is displayed on the check-engine light. To measure the correct amount of air is entering to an engine is the design of the mass airflow sensor. Due to the unmanaged airflow the mass airflow sensor is not working properly and the engine’s performance significantly drops from the fuel efficiency being reduced is a classic symptom.
Evaporative Emission Control System Needs Repair
When the Evaporative Emission Control system (or EVAP) is in place to monitor the gasoline vapors from not exiting the gas time and fuel system or releasing into the air. As faulty gas caps, broken valves, or leaking vacuum hoses and vents, a simple issue can arise that affects the EVAP. The vehicle will need to be serviced, if it causes the check-engine light to illuminate, however.
Spark Plugs and Wires Symptoms
Contributing to electrical problems that will set in motion the check-engine light, spark plugs and wires not effectively functioning. A vehicle’s catalytic converter can be the result of spark plugs are often ignored, but they are an essential element to the vehicle’s electrical system and can result in permanent damage. A few red flags of this is rough engine idling, engine misses or pings are produced, power losses and surges, and other such erratic engine performance. It is best to get the problem resolved as quickly as possible to prevent expensive repairs in the event the check-engine light comes on.
Failing Ignition Coil
The check-engine light becoming lit can be derived from ignition coil issues. The ignition coils ignite the spark plugs with the use of an electric current from the car’s battery. There may be an impedance with the ignition coil if the electric current running through the car is disrupted. Because the entire electrical system can be negatively impacted if this is the cause and you need professional care.
Bad Oxygen Sensor Needs Replacement
So that the vehicle’s engine to operate at maximum performance, the oxygen emissions levels need to be managed. The oxygen sensors gauge the gasses that leave the engine to ensure the correct ratio of oxygen and fuel are being pumped through the engine. Leading to the engine light to pop on when the ratio is imperfect, the fuel economy of the vehicle drops.
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The vehicle’s battery, charging systems, and other underlying problems are a few other common reasons that check-engine light comes on. It will only cause the problem to become worse while waiting for the issue to fix itself is not effective. Call A-1 Automotive Repair and let our certified specialists run diagnostics to find the issue at hand when your check-engine light is activated.