Why Is My Check Engine Light On? PO430

September 19, 2024

Why Is My Check Engine Light On?

Is your check engine light on, and your car's computer is throwing a P0430 code? For drivers of older vehicles like the 2000 Ford Windstar, this can be a cause for concern, but it doesn’t have to be. At Wayside Garage, we’ve seen this issue often and can help explain what’s going on.

What Does a P0430 Code Mean?

A P0430 code refers to "Catalyst Efficiency Below Threshold" for bank two, which means your catalytic converter on that side of the engine isn’t performing efficiently. The catalytic converter is responsible for reducing harmful emissions from your engine, so when this component struggles, it could be bad news for both your vehicle’s performance and the environment.

What Causes a P0430 Code?

Several issues can trigger a P0430 code:

Aging Oxygen Sensors: These sensors monitor your engine's fuel mixture. If they aren’t functioning properly, they can send the wrong signals to your engine, causing inefficiency in your catalytic converter. It’s recommended to replace oxygen sensors every 30,000 to 50,000 miles as part of routine maintenance.
Worn-Out Catalytic Converter: Over time, catalytic converters degrade, especially in older vehicles. High mileage and oil-burning engines can contribute to their wear and tear.
Running Rich or Lean: If your engine is running too rich (too much fuel) or lean (too much air), it puts additional stress on your catalytic converter, causing it to fail earlier than expected.

Preventative Maintenance for Catalytic Converters

One often overlooked maintenance task is replacing oxygen sensors. At Wayside Garage, we recommend replacing these sensors every five years or between 30,000 and 50,000 miles. This simple step can help extend the life of your catalytic converter and prevent costly repairs.

How We Can Help

If your check engine light is on, bring your vehicle into Wayside Garage. Our ASE-certified technicians will diagnose the problem using advanced tools. We can test your oxygen sensors and catalytic converter to pinpoint the issue and recommend a solution. Whether it’s sensor replacement or a new catalytic converter, we have you covered.

Schedule Your Service Today

Don't wait for small issues to become costly repairs! Call us at (831)-899-2425 or schedule an appointment online. Let’s keep your car running smoothly and efficiently.

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🔧 At Wayside Garage, we recommend replacing oxygen sensors every 30,000 to 50,000 miles to keep your catalytic converter and engine running smoothly. If you're seeing this code, don’t wait! We’ll get your vehicle checked out and back on the road.

📞 Call us at (831)-899-2425 or visit our website to schedule an appointment: www.waysidegarage.com

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ARE MY BRAKES SAFE?

By Stacey Diaz • October 14, 2025

October is more than just pumpkin patches and crisp fall air. For many families in Monterey, it's also the start of darker evenings, wetter roads, and more time on the road. That’s why October is the perfect time to think about one of the most important safety features on your vehicle: your brakes. At Wayside Garage, we participate in the Brakes for Breasts campaign every October. It's not just about brake repair — it’s about raising awareness, supporting breast cancer research, and keeping our community safe on the roads. ________________________________________ What Are the Signs Your Brakes Might Need Attention? Your brakes are your first line of defense in an emergency. If you’re noticing any of these symptoms, it’s time to get your brakes checked: • Squealing or grinding noises • A soft or “spongy” brake pedal • Car pulling to one side when braking • Vibration or shaking when you press the brakes • Increased stopping distance Ignoring these signs can lead to expensive repairs down the road — or worse, a serious accident. We always say: if it feels off, bring it in. ________________________________________ Why Brake Inspections Matter More in Fall With more rain, shorter days, and holiday travel ahead, your brakes are under more stress in the fall. At Wayside Garage, we see an uptick in emergency brake repairs this time of year — many of which could have been avoided with a quick inspection. Our certified technicians will perform a comprehensive brake check, looking at: • Brake pads and rotors • Brake fluid level and condition • Brake lines and hoses • Calipers and hardware And if you’re part of our Wayside Garage Maintenance Plan, your brake inspections are included with your scheduled services. That’s one more reason to stay on track with routine care. ________________________________________ Brakes for Breasts: Repair With a Purpose Every October, we join auto shops nationwide for the Brakes for Breasts campaign. Here’s how it works at Wayside Garage: • You get free brake pads (you only pay for labor and any additional parts if needed). • We donate 10% of the brake job to the Cleveland Clinic Breast Cancer Vaccine Fund. It’s a meaningful way to protect your family on the road while supporting groundbreaking research that could change lives. ________________________________________ Why Choose Wayside Garage for Brake Service? We know you have options when it comes to brake repair in Monterey. So why do so many drivers trust us? • Family-owned and operated since 1946 • ASE-certified technicians who care about doing it right • Honest inspections and clear explanations • Free digital vehicle health reports • A shop built on integrity, hospitality, and professionalism When you bring your vehicle to us, you're not just another ticket — you're part of the Wayside Garage family. ________________________________________ Schedule Your Brake Inspection Today October is the best time to have your brakes checked — and support a great cause while you're at it. Whether you’re noticing a problem or just want peace of mind before the holidays, give us a call or schedule an appointment online. Let's keep your vehicle — and your community — safe this fall.