How much does it cost to replace a catalytic converter on a Honda Odyssey?

On a Honda Odyssey, replace one catalytic converter installed typically runs about $1,000 to $2,500, and if two converters are needed the total can rise to roughly $2,000 to $4,500. The exact price depends on your choice of parts (OEM Honda versus aftermarket) and local labor rates.

Typical price ranges for a single converter

Prices reflect installed work and vary by parts choice and shop rate. The ranges below show common scenarios encountered by Odyssey owners.

• Single converter replacement using aftermarket parts: approximately $400–$1,200 installed.


• Single converter replacement using OEM Honda parts: approximately $1,000–$2,600 installed.


• Two converters replacement using aftermarket parts: approximately $1,600–$3,700 installed.


• Two converters replacement using OEM parts: approximately $2,400–$5,000 installed.

These figures are general ranges; the exact quote will depend on the car's year, the number of converters, and the shop's labor rate. Some quotes may include diagnostic fees, labor for exhaust welds, or replacement of gaskets and sensors.

What affects the total cost

Several factors determine the final price beyond the number of catalytic converters. Being aware of them helps you compare quotes accurately.

• Number of converters required by your Odyssey's exhaust system (single vs dual). Some model years have two converters in series.


• Parts choice: OEM Honda parts tend to be pricier than aftermarket equivalents but may offer a longer warranty and guaranteed emissions compatibility.


• Labor rate by region and shop. Urban areas and independent shops often charge more than rural shops.


• Condition of the exhaust and surrounding frame. Rust or seized bolts can require additional labor or tools.


• Other components that may need replacement at the same time, such as oxygen sensors, gaskets, or clamps, which add to both parts and labor costs.


• Emissions regulations and potential diagnostic checks required to verify proper functioning after replacement.

To minimize surprises, request a written estimate that itemizes parts, labor, and any diagnostic fees before authorizing work. Some shops will also provide a separate warranty for the catalytic converter and workmanship.

Tips to save money

Consider these practical steps to reduce total costs while ensuring a reliable repair.

• Shop around and obtain multiple written estimates, including both OEM and aftermarket options.


• Ask if the price includes labor, tax, and any required sensors or gaskets; clarify whether a separate diagnostic fee applies.


• Inquire about a warranty on the replacement and what it covers.


• If two converters are not already damaged, get a second opinion to confirm one or two replacements are necessary; ensure the test results justify the repair.

Note: Do not compromise on emissions compliance or exhaust integrity; a cheap part that doesn’t meet standards can cause failure on emissions tests or trigger check engine lights.

Summary

The cost to replace a catalytic converter on a Honda Odyssey varies with the vehicle's configuration, the parts chosen, and local labor rates. In general, expect about $1,000 to $2,500 for a single converter, and $2,000 to $4,500 or more if two converters are required, with OEM parts at the higher end. Shopping around and obtaining multiple quotes can help you find the best price while ensuring the repair meets emissions requirements.

How much to replace a catalytic converter on a Honda Odyssey?

The average cost for a Honda Odyssey Catalytic Converter Replacement is between $1,791 and $2,191. Labor costs are estimated between $153 and $225 while parts are priced between $1,638 and $1,966.

Can I still drive with a bad catalytic converter?

You can technically drive with a bad catalytic converter, but it's not recommended, especially if it's clogged, as it can lead to engine damage, poor performance, and potential legal issues. If the converter is simply inefficient but not blocked, you may be able to drive for a while, but if it becomes clogged, it can cause severe issues like engine misfires or a total loss of power, as the exhaust cannot escape. A professional diagnosis is needed to determine the extent of the problem. 
This video explains the symptoms of a bad catalytic converter: 1m8020 AutomotiveYouTube · Apr 14, 2024
Risks of driving with a bad catalytic converter

• Engine damage: A clogged converter can cause extreme back pressure, which can damage engine components like crankshafts, rings, and bearings over time. 
• Poor performance: You may experience a significant loss of power, engine misfires, rough idling, and an inability to accelerate past a certain speed. 
• Legal issues: In many areas, it is illegal to drive with a faulty or missing catalytic converter, and you could be fined or fail an emissions test. 
• Increased emissions: A failing converter will not properly clean the exhaust, leading to increased pollution. 

What to do if you suspect a bad catalytic converter

• Avoid driving: If you suspect a clogged converter, it is best to avoid driving the car to prevent further damage. 
• Get a professional diagnosis: Have a mechanic diagnose the issue to determine if the converter is clogged or just inefficient. 
• Consider towing: If you have to move the vehicle, consider using a tow truck to take it to a repair shop. 

You can watch this video for more information on the risks of driving with a bad catalytic converter: 47sTalkingTechTrendsYouTube · Apr 21, 2025

Is it worth replacing a catalytic converter?

Yes, replacing a catalytic converter is often worth it to avoid legal penalties, significant engine damage, and poor performance. While the initial cost is high, driving without one is not recommended due to the risk of failing emissions tests, a loud engine, reduced fuel efficiency, and potential damage to other engine components. 
Reasons to replace your catalytic converter 
This video explains the reasons why replacing a catalytic converter is worth it: 49sStudent LessonYouTube · Sep 18, 2023

• Avoid legal and inspection issues: Many states require a working catalytic converter to pass emissions and smog tests for vehicle registration. Driving without one is illegal in most places. 
• Prevent engine damage: A malfunctioning or clogged converter can cause the engine to work harder, leading to sluggishness, misfires, and other issues. Continued driving can lead to more extensive and costly engine damage or failure. 
• Improve vehicle performance: A new converter will restore engine performance, improve acceleration, and can prevent other problems like stalling. 
• Increase fuel efficiency: A clogged converter can decrease your gas mileage, so replacement can improve your fuel economy. 
• Reduce harmful emissions: The primary function of a catalytic converter is to reduce harmful pollutants from your vehicle's exhaust, which is beneficial for the environment. 

When to consider replacement

• Signs of a problem: Look for symptoms like reduced engine power, a sulfur or rotten egg smell from the exhaust, poor acceleration, or a loud rattling noise from the exhaust system. The "check engine" light is often a sign of a failing catalytic converter, but it could also be triggered by other engine issues, so a proper diagnosis is important. 
• Cost vs. long-term cost: Even though replacement is expensive, the cost of ignoring the problem can lead to even more expensive engine repairs down the line. 
• Repair vs. replacement: If the catalytic converter is damaged, get an estimate for both repair and replacement. Often, replacement is the better option if the repair cost is similar to a new part. 

What is the life expectancy of a Honda catalytic converter?

Lifespan of a Catalytic Converter
Most catalytic converters eliminate more than 90% of an engine's harmful emissions. If your vehicle is kept in good working order, it can function well for more than 100,000 miles and sometimes as long as the vehicle is running and driving.