As the component that ensures that 90% of toxic emissions from your car are converted into harmless compounds, catalytic converters are essential to the environment. However, they're also essential to the health of your vehicle and your driving experience, so it's doubly important to know when your converter is malfunctioning. If you've been experiencing issues with your vehicle's performance, fuel efficiency, or emissions, it might be time to consider the condition of your catalytic converter. The catalytic converter is a vital component of your vehicle's exhaust system, responsible for reducing harmful emissions and ensuring your car runs smoothly. A faulty converter can result in the buildup of harmful chemicals in the system and cause further harm to your car, so it's important to tackle the problem immediately. Read on for our list of signs that it's time to contact your Honda dealer for a replacement.

5 Signs That It's Time for a New Catalytic Converter From Your Honda Dealer  

1. Rattling Noises

The converter, often known as the "cat", contains a ceramic block that is covered in tiny pores rather like a honeycomb. These pores are coated in metals, such as palladium, that are used to catalyze the harmful chemicals in your exhaust. However, the unit can be damaged by age, heat, or a sharp blow, causing this mesh to break down.


A tell-tale sign of this might be a rattling noise under the engine, loudest at ignition, when the car is driving or idling. This problem can lead to debris from the converter infiltrating the rest of the exhaust system and damaging your vehicle further, so it's essential to schedule a checkup if you hear this noise.

2. Bad Smells

One of the exhaust compounds that is broken down by the catalytic process is hydrogen sulfide, which the cat transforms into odorless sulfur dioxide. However, when the converter malfunctions, unburnt fuel in the exhaust will release an unpleasant sulfuric smell, similar to rotten eggs. Other signs of this problem might be a burning smell, or thick black smoke emitting from the exhaust. 

As well as making your drive unpleasant, these are a compelling signal that all is not well with your converter, so it's important to contact your dealer as soon as you can.

3. Loss of Power

A faulty converter can restrict the flow of exhaust gases and result in a loss of power from the engine. A sluggish response when accelerating or driving at speed could be an indication that the cat has become clogged or damaged. If you notice that your driving experience has become less enjoyable, then it's time to arrange for a diagnostic check.  

4. Reduced Fuel Economy

Ignoring a failing converter can incur further expense in more ways than one, as it'll allow unburned fuel into the exhaust system and effectively waste it. If you find that you're spending more at the gas pump, the cat could be the culprit.

5. Engine Warning Light

Obviously, the "Check Engine" warning light should never be ignored if it appears on the dashboard, but this could be yet another sign of a faulty converter. The oxygen and fuel-air ratio sensors will activate this light if they pick up on a problem, so a replacement might be on the cards.

Choosing the Correct Part for the Application

When replacing a catalytic converter, it's crucial to choose the correct part for your vehicle's make, model, and engine size. An ill-fitting converter can lead to poor performance and emissions issues. Consult your vehicle's manual or a trusted automotive professional to ensure you select the right catalytic converter.

How Much Is a Catalytic Converter?

The cost of a catalytic converter can vary widely depending on factors such as your vehicle's make and model, the type of converter (OEM or aftermarket), and local labor rates. Considering both the price and the quality of the replacement part on average, catalytic converters can range from a few hundred to over a thousand dollars.

What Does Repairing or Replacing a Catalytic Converter Do?

Repairing or replacing a catalytic converter restores your vehicle's emissions control system to optimal functionality. This not only helps your vehicle run efficiently but also reduces harmful emissions, contributing to a cleaner environment. It's essential to address catalytic converter issues promptly to avoid further damage to your engine and to comply with emissions regulations.

Top-Rated Service for Catalytic Repairs

When it comes to catalytic converter repairs or replacements, trust the experts at Honda of Seattle. Our experienced technicians are well-versed in diagnosing and resolving catalytic converter issues, ensuring your vehicle runs smoothly and efficiently. We offer top-notch service and use high-quality replacement parts to get you back on the road with confidence. Don't let catalytic converter problems affect your driving experience; schedule an appointment with Honda of Seattle today.

If you're in any doubt, or if you just want to make sure that your car is in good health, contact us at Honda of Seattle, where your car will receive expert diagnosis and the very best of care.