A Ford Mechanic's Guide to the 2009-2019 Taurus Catalytic Converter
If your check engine light is on with a P0420 or P0430 code, this guide is for you.
- A P0420 or P0430 code doesn't automatically mean you need a new converter; diagnose the root cause first, like misfires or bad O2 sensors.
- You must fix the underlying engine problem that caused the original converter to fail, or the new part will also be destroyed.
- Check with a Ford dealer for any open TSBs or warranty extensions, especially for 2013-2017 models, before paying for a repair.
- A direct-fit aftermarket converter is a reliable, cost-effective option that is much easier to install than a universal part.
Is Your Taurus Catalytic Converter Failing?
When a catalytic converter starts to go bad, your car will give you several warning signs. 🎬 Watch: Common symptoms of a failing catalytic converter The most common sign is the check engine light turning on. However, a check engine light for converter codes P0420 or P0430 doesn't always mean the converter itself is the problem. Always check for other issues first.
Diagnosing the Real Problem
A catalytic converter usually fails because another part of the engine is not working right. Things like bad spark plugs, a faulty oxygen sensor, or leaking fuel injectors can send unburned fuel into the exhaust. This raw fuel overheats the converter and melts the delicate honeycomb structure inside, causing it to clog or break. If you replace the converter without fixing the original problem, the new one will fail quickly.
🎬 See why this Taurus keeps destroying new convertersDon't Ignore the Root Cause
Before you spend money on a new converter, have a mechanic diagnose why the original one failed. Fixing an engine misfire or a fuel system problem first will save you from having to buy another converter down the road.
Choosing the Right Aftermarket Converter
For a 2009-2019 Ford Taurus, you don't need to buy an expensive OEM part from the dealer. Aftermarket converters are a cost-effective solution that will get your car back on the road and pass emissions tests. They come in different quality levels:
- Premium Brands (MagnaFlow): These are high-quality, stainless steel converters designed for long life and sometimes even better exhaust flow. They are a top choice if you want the best aftermarket option.
- Standard Brands (Walker, Dorman, AP Exhaust, Eastern Catalytic): These brands offer a great balance of price and quality. They are built to work just like the original part and are a reliable choice for most owners.
- Economy Brands (Evan Fischer, Davico): These are the most affordable options. They will solve your check engine light issue but may not last as long as more expensive brands because they contain fewer of the precious metals needed for the chemical reaction.
Pro Tip: Always choose a "direct-fit" converter for your Taurus. These are designed to bolt right into place without any cutting or welding, making installation much easier for a DIY mechanic or saving on labor costs at a shop.
Known Issues for 2009-2019 Ford Taurus
Ford has recognized some issues with converters on these vehicles. It's worth checking if your car is covered:
- TSB 14-0102: Some 2013-2014 Taurus models with the 3.5L or 3.7L engine could get a P0420 or P0430 code. Ford's fix was to replace the converter and update the engine computer's software.
- Customer Program 21B42: Some 2016-2017 Taurus models were part of a program to inspect and replace cracked right-hand converters that caused exhaust noise or odors.
- Police Interceptor Warranty Extension (19M01): While this applied to the Police Interceptor Utility (Explorer), it shows that Ford extended the warranty to 11 years/120,000 miles for converter failures on some fleet vehicles from 2013-2018 due to issues with overheating. It's always a good idea to call a Ford dealer with your VIN to see if any programs apply to your specific car.
| Part/Service | Estimated Cost | Notes |
|---|---|---|
| New Aftermarket Converter | $194 - $675 | Price depends on the brand and whether it's for Bank 1 or Bank 2. |
| New OEM Converter | $2,100 - $2,400 | Dealer part cost only. Generally not necessary for an older vehicle. |
| Shop Labor | $220 - $320 | For a direct-fit part. Universal parts that require welding will cost more. |
Frequently Asked Questions
What are the codes P0420 and P0430?
P0420 means "Catalyst System Efficiency Below Threshold (Bank 1)" and P0430 is the same for "Bank 2". Your car's computer compares the readings from the oxygen sensors before and after the catalytic converter. If the readings are too similar, it means the converter isn't cleaning the exhaust properly, 🎬 Watch: A mechanic explains P0420 and P0430 efficiency codes and it triggers the code.
Do I need a special converter for California, New York, Colorado, or Maine?
Yes. These states have stricter emissions laws and require a CARB-compliant catalytic converter. Federal (EPA) converters are not legal for sale or use in these states. Always check your state's regulations before buying.
Should I replace my oxygen sensors at the same time?
It's a good idea, but not always necessary. A faulty oxygen sensor can sometimes cause a false P0420 code. However, if the converter failed because it was clogged or melted, it's wise to replace the downstream (post-converter) O2 sensor, as it may have been damaged by the heat.
Can I clean a clogged catalytic converter?
Generally, no. While some fuel additives claim to clean converters, they cannot fix a converter that is melted, clogged, or has a broken internal structure. Once a converter has failed mechanically, replacement is the only real solution.
Helpful Videos
Technical Specifications
OEM Part Numbers: DA8Z-5G232-C DA8Z-5G232-D
The 2009-2019 Ford Taurus with the 3.5L V6 engine (including Turbo and non-turbo variants) uses multiple catalytic converters, typically integrated with the exhaust manifold (manifold converters) for Bank 1 and Bank 2. Direct-fit replacements are recommended. Ensure the part is specified for your engine (Turbo or Naturally Aspirated) and drivetrain (FWD or AWD) as fitment can vary.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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