Common Check Engine Light Causes
Our state-of-the-art diagnostic tools help us quickly identify the root cause, from simple fixes to more complex engine repairs.
Faulty Oxygen (O2) Sensor
A bad O2 sensor can’t properly measure oxygen in your exhaust, leading to decreased fuel efficiency and increased emissions. Replacing it can save you money at the pump.
Schedule Service →Loose Gas Cap & EVAP Issues
Sometimes it’s a simple fix! A loose or faulty gas cap can cause fuel vapors to leak, triggering the light. We can also diagnose issues with the EVAP system itself.
Schedule Service →Ignition System Failure
Worn-out spark plugs, bad ignition coils, or faulty spark plug wires can cause your engine to misfire. This not only turns on the light but can also damage your catalytic converter.
Schedule Service →Our Engine Diagnostic Process
We don’t just read the code; we find the problem.
What Your Check Engine Light is Telling You
The light’s behavior can tell you a lot about the urgency of the problem.
1. A Solid Check Engine Light
This is the most common scenario. It means your car’s computer has detected a fault in one of its systems. While not an emergency, you should get it diagnosed soon to prevent the issue from becoming worse or causing a drop in fuel economy.
2. A Flashing Check Engine Light
This indicates a serious problem, typically a severe engine misfire. Unburned fuel could be getting into the exhaust system, which can rapidly damage the catalytic converter—a very expensive repair. You should pull over and have your vehicle towed.
3. Reduced Performance or Fuel Economy
Even if the light is solid, you might notice your car is sluggish, hesitating, or using more gas than usual. These are clear signs that the underlying problem is affecting your vehicle’s performance and needs to be addressed.
Why Graham Trusts Auto Star for Diagnostics
We’re your neighbors, committed to honest work and accurate repairs.
ASE Certified Technicians
Our technicians are trained in modern engine diagnostics to accurately identify the problem, saving you time and money.
Advanced Diagnostic Tools
We invest in the latest technology to communicate with your vehicle’s computer and understand the precise cause of the fault.
Honest Recommendations
We explain the problem in plain English and provide a clear, upfront estimate before any repairs are made. No surprises.
Locally Owned & Operated
We’re proud to serve Graham and our surrounding communities like Spanaway, Puyallup, and Eatonville with dedication and integrity.
Visit Us or Get in Touch
Let’s get that light turned off. Schedule your diagnostic appointment online today!
Our Location
Auto Star
28801 Meridian E, Graham, WA 98338
Phone: (253) 375-7057
Hours: Mon-Fri: 9:00 am – 5:00 pm
Get an Accurate Diagnosis
Use our convenient online system to book your appointment in just a few clicks. We’ll find the problem and provide a clear path forward.
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