Seeing the check engine light illuminate on your dashboard can be unsettling. This warning light can indicate a range of issues, from minor glitches to serious mechanical problems. The important thing is to get to the shop when it first comes on, which will give you the best chance to resolve the problem before it escalates. At Jake’s Auto Repair, we provide expert check engine light diagnostics and repair in the greater Phoenix area. Here’s a look at five common check engine light triggers.

Oxygen Sensor Malfunction

Oxygen sensors measure the amount of unburned oxygen in the exhaust system, helping to manage the air-fuel mixture that enters the engine. When this sensor fails, it can lead to decreased fuel efficiency, increased emissions, and potentially cause problems with the catalytic converter. A malfunctioning oxygen sensor is a common cause for the check engine light and should be addressed promptly to avoid further issues.

Catalytic Converter Issues

The catalytic converter reduces harmful emissions by converting exhaust gasses into less harmful substances. Symptoms of a failing catalytic converter include reduced performance and increased emissions. You might also notice a smell similar to rotten eggs.

Mass Airflow Sensor Problems

The mass airflow sensor measures the amount of air entering the engine to ensure the correct fuel-to-air ratio. If this sensor fails, it can lead to poor engine performance, increased emissions, and stalling. 

Loose or Damaged Gas Cap

It might seem strange, but a common reason for the check engine light to appear is a loose or faulty gas cap. The gas cap seals the fuel system. If it’s missing or damaged, fuel may evaporate before your engine gets the opportunity to run on it.

Spark Plug or Ignition Coil Failures

Spark plugs and ignition coils are crucial for the ignition process in your engine. Spark plugs create the spark that ignites the air-fuel mixture, while ignition coils generate the voltage needed for this spark. When either of these components fails, it can cause misfires, reduced power, and poor fuel-economy. 

Check Engine Light Repair in Phoenix, AZ

For top-quality auto repair in Phoenix and the surrounding area, contact Jake’s Auto Repair at 602-246-4900. At our local auto shop, we can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call today to make an appointment! And be sure to check out our current special offers!