If the engine warning light on your dashboard lights up, it’s never a good sign. But don’t panic just yet! There are a few possible reasons why this may happen, and some are relatively easy (and inexpensive) to fix. Read on for more information!
1. Loose Gas Cap
Many people are surprised that a loose or damaged gas cap can cause your check engine light to come on. The cap is responsible for sealing the fuel system and keeping gasoline fumes from escaping. A loose cap will cause your car to run less efficiently and may trigger that dashboard warning. Fortunately, this problem has an easy fix – simply tighten the gas cap until it clicks!
2. Faulty Oxygen Sensor
Another possible reason for a check engine light is a faulty oxygen sensor. This sensor monitors and reports the O2 levels in the exhaust system. A faulty O2 sensor can cause the engine to run lean (not enough gas and too much air) or rich (too much gas and not enough air). Either alternative can damage the engine over time. To fix a faulty oxygen sensor, have your mechanic replace it with a new one.
3. Malfunctioning Mass Air Flow Sensor
The mass air flow sensor measures the amount of air flowing into the engine so that the computer can adjust the fuel mixture accordingly. A faulty sensor can cause problems like reduced fuel economy, increased emissions, and stalling. Again, a mechanic can test whether or not the mass air flow sensor needs to be replaced.
4. Bad Spark Plugs
Spark plugs ignite the air-fuel mixture in your engine. If they’re worn out or fouled, they can cause your engine to misfire and trip the check engine light. Replacing spark plugs is a relatively easy DIY fix if you’re mechanically inclined, but if you don’t know what you’re doing, don’t risk it. Get help from a professional mechanic.
5. Faulty Catalytic Converter
The catalytic converter reduces harmful emissions from the engine before they exit through the exhaust system. Besides tripping the check engine light, a bad converter can cause an increase in emissions as well as reduce fuel economy and power. A mechanic can check if the converter needs to be replaced or if there’s another underlying problem.
If your check engine light comes on, don’t blow a gasket! There are several possible causes, some of which are relatively easy (and inexpensive) to fix yourself. However, if you’re unsure about what’s going on or the light won’t go off, it’s always best to diagnose your problem and fix it at a reputable service center. Head on over to DARCARS Used Car & Service Center of Frederick today!
Connect with us
