7812 SE 82nd Ave. Portland, OR 97266 | Monday-Friday 7am-6pm
Saturday by appointment only - pick up & drop off repairs only | (503) 616-5479
8901 NE 117th Ave Vancouver, WA 98662 | Mon-Fri 7:30am-5:30pm | (360) 558-3502
While the check engine light is cause for concern, it doesn’t automatically mean that your engine is about to go completely kaput. Still, you should promptly get to the shop for diagnostics. This way, you’ll have the best chance to pinpoint and resolve the issue before it gets worse, potentially leaving you stranded and with more expensive repairs. At A-1 Automotive, we provide expert check engine light repair in the greater Portland, OR area. Here are five common causes of an illuminated check engine light.
Faulty Catalytic Converter
A failing catalytic converter is a serious issue that can trigger the check engine light. Responsible for converting harmful pollutants into less harmful substances, a malfunctioning converter can result in decreased performance, increased emissions, and reduced gas mileage.
Malfunctioning Mass Airflow Sensor
The mass airflow sensor measures the amount of air entering the engine, helping the computer determine the right fuel-to-air ratio for optimal combustion. A malfunctioning sensor can lead to poor fuel-efficiency, rough idling, and even engine stalling.
Bad Oxygen Sensor
One of the more common reasons the check engine light comes on is a malfunctioning oxygen sensor. Responsible for monitoring the amount of oxygen in the exhaust gasses, a faulty sensor can lead to increased emissions and catalytic converter problems.
Ignition Coil or Spark Plug Issues
Ignition coils and spark plugs are ignition system components that play a crucial role in the combustion process. If the check engine light is on, it could indicate problems with these parts. Ignoring issues with plugs/coils can lead to misfires and decreased power.
Loose/Missing/Damaged Gas Cap
A loose or damaged gas cap can actually trigger the check engine light as well. The gas cap maintains pressure in the fuel system. And when it's not sealed properly, it can lead to fuel evaporating before your engine gets the chance to run on it..
Check Engine Light Repair in Portland, OR
When you need auto repair in Portland, OR, or Vancouver, WA, visit A-1 Automotive. At our nearby auto shop, our highly-rated mechanics can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call today to schedule an appointment!