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Johnny's AutomotiveJohnny's Automotive
Lake Wales, FL

Catalytic Converter Replacement at our Lake Wales shop

Bring it to our Lake Wales shop and we'll handle the catalytic converter replacement. Here's where to find us, when we're open, and how to book a time.

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Lake Wales, FL323 North Scenic HighwayBook a time online
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Where to find our Lake Wales shop

Address, hours, and directions for the shop that handles your catalytic converter replacement.

Address

323 North Scenic Highway
Lake Wales, FL 33853

Shop phone

(863) 676-3858

Hours

Monday
7:30 AM to 5:30 PM
Tuesday
7:30 AM to 5:30 PM
Wednesday
7:30 AM to 5:30 PM
Thursday
7:30 AM to 5:30 PM
Friday
7:30 AM to 5:30 PM
Saturday
Closed
Sunday
Closed

Recent Catalytic Converter Replacement Work in Lake Wales

Real jobs completed by our team in the Lake Wales area

Our team

Our Team

September 2026

Why Is My Check Engine Light On with Code P0420?

The Problem

The vehicle owner noticed the check engine light was illuminated, indicating a potential issue with the catalytic converter as suggested by the code P0420.

What We Found

The technician performed a thorough diagnosis and confirmed that the catalytic converter was not functioning properly, triggering the check engine light.

The Fix

The team at our Lake Wales shop replaced the faulty catalytic converter with a new one to resolve the issue. Additionally, they installed two new tires and a Gold Die Hard battery to ensure the vehicle was in optimal condition.

The Result

The check engine light was turned off, and the vehicle was running smoothly with the new catalytic converter.

Pro Tip

When your check engine light comes on with a code like P0420, it often indicates a catalytic converter issue. Addressing it promptly can prevent further engine problems and maintain fuel efficiency.

FAQ

Catalytic Converter Replacement in Lake Wales: questions answered

Answered by our licensed technicians serving Lake Wales.

How do you know it's the converter and not a sensor?

We watch what both oxygen sensors are actually doing while the engine runs, instead of trusting the code. A healthy converter makes the downstream sensor go relatively flat while the upstream one keeps switching. If that pattern is there, the converter is doing its job and we go looking somewhere else.

Can a converter be cleaned instead of replaced?

Occasionally. If the honeycomb is intact and just fouled from a condition we've since fixed, a cleaning is worth trying and we'll tell you the odds honestly. If it's rattling, melted, or plugged, no chemical or cleaning process is bringing it back and we won't take your money to try.

Why are catalytic converters so expensive?

The coating inside contains platinum, palladium and rhodium, and those metals are priced like the commodities they are. That's also exactly why they get stolen. It's the single most expensive component on most exhaust systems, which is the whole reason we diagnose carefully before condemning one.

What can I do about converter theft?

Some vehicles get targeted far more than others, usually the ones sitting high enough to slide under. For those we can install a shield or cable guard, and it's a lot cheaper when we do it during another repair while the car is already up. Parking where the underside isn't easy to reach helps too.

Will replacing the converter fix my failed emissions or turn off the light?

Only if the converter was the real cause. If a leak, a misfire, or an oil burning issue is what set the code, the light comes back on a new converter, sometimes within a week. That's why we chase the cause first and replace the part second.

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ASE Certified Technicians

ASE certified techs working on your vehicle

Flexible Drop-Off Hours

Convenient service options

20+ Years

Decades of trusted service

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