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Buick Catalytic Converters

Why run the risk of failing your next emissions tests due to a bad catalytic converter when you can order a top-notch replacement here at CarParts.com with just a few clicks? We carry a wide array of OE-grade catalytic converters for models like the Buick Enclave, LaCrosse, LeSabre, and more. We remove the guesswork out of finding parts that fit with the help of our website’s vehicle selector. All our parts are on hand and ready to ship, so you won’t have to wait long to get the Buick catcon you need. Check out our catalog and shop now!
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Firewall Side Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 3.6L Engine
Part Number: JG960307
Vehicle Info Required to Guarantee Fit
$149.99
Product Details
Location : Firewall SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 14 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/501-416Gasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile JC Whitney limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : 50457, 19253Series : Direct Replacement SeriesTube Material : Aluminized Steel
Radiator Side Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 3.6L Engine
Part Number: JG960308
Vehicle Info Required to Guarantee Fit
$174.99
Product Details
Location : Radiator SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 13.5 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/501-416Gasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile JC Whitney limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : 50456, 19252Series : Direct Replacement SeriesTube Material : Aluminized Steel
Rear Direct Replacement Series Catalytic Converter, 6, 3.6 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: JC96030002
Vehicle Info Required to Guarantee Fit
$189.99
Product Details
Location : RearEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 21 in. Overall LengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile JC Whitney limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replaces OE Number : 15903508, 20906951Interchange Part Number : 50477, 15903508, 20906951Series : Direct Replacement SeriesTube Material : Aluminized Steel
Firewall and Radiator Side Catalytic Converters, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 3.6L Engine
Part Number: SET-JG960307
Vehicle Info Required to Guarantee Fit
$334.99
Product Details
Location : Front, Driver And Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Components : (1) Front Firewall Side Catalytic Converter, (1) Front Radiator Side Catalytic ConverterRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Set of 2EPA : N/TB6000/501-416Gasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile JC Whitney limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Direct JC Whitney SeriesTube Material : Aluminized Steel
Front and Rear Catalytic Converters, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 3.6L Engine
Part Number: SET-JG960307-3
Vehicle Info Required to Guarantee Fit
$534.99
Product Details
Location : Rear, Firewall And Radiator SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Components : (1) Firewall Side Catalytic Converter, (1) Radiator Side Catalytic Converter, (1) Rear Catalytic ConverterRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Set of 3EPA : N/TB6000/501-416Gasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile JC Whitney limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replaces OE Number : 15903508, 20906951Interchange Part Number : 50456, 19252, 50457, 19253, 50477, 15903508, 20906951Tube Material : Aluminized Steel
Center Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), With 113.0 Wheelbase, 4.2L Engine
Part Number: JC960310
Vehicle Info Required to Guarantee Fit
$209.99
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 50 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/63005NNGasket Included : Without GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile JC Whitney limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : 50365Series : Direct Replacement SeriesTube Material : Aluminized Steel
Firewall Side Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 3.6L Engine
Part Number: REPG960307
Vehicle Info Required to Guarantee Fit
$147.49
Product Details
Location : Firewall SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 14 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/501-416Gasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : 50457, 19253Series : Direct Replacement SeriesTube Material : Aluminized Steel
Radiator Side Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 3.6L Engine
Part Number: REPG960308
Vehicle Info Required to Guarantee Fit
$147.49
Product Details
Location : Radiator SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 13.5 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/501-416Gasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : 50456, 19252Series : Direct Replacement SeriesTube Material : Aluminized Steel
Rear Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 3.6L Engine
Part Number: RC96030002
Vehicle Info Required to Guarantee Fit
$143.99
Product Details
Location : RearEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 21 in. Overall LengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replaces OE Number : 15903508, 20906951Interchange Part Number : 50477, 15903508, 20906951Series : Direct Replacement SeriesTube Material : Aluminized Steel
Firewall and Radiator Side Catalytic Converters, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 3.6L Engine
Part Number: SET-REPG960307
Vehicle Info Required to Guarantee Fit
$279.99
Product Details
Location : Front, Driver And Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Components : (1) Front Firewall Side Catalytic Converter, (1) Front Radiator Side Catalytic ConverterRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Set of 2EPA : N/TB6000/501-416Gasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Direct Replacement SeriesTube Material : Aluminized Steel
Front and Rear Catalytic Converters, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 3.6L Engine
Part Number: SET-REPG960307-3
Vehicle Info Required to Guarantee Fit
$416.99
Product Details
Location : Rear, Firewall And Radiator SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Components : (1) Firewall Side Catalytic Converter, (1) Radiator Side Catalytic Converter, (1) Rear Catalytic ConverterRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Set of 3EPA : N/TB6000/501-416Gasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replaces OE Number : 15903508, 20906951Interchange Part Number : 15903508, 20906951Tube Material : Aluminized Steel
Front Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 1.4L Turbo Engine
Part Number: RC96030006
Vehicle Info Required to Guarantee Fit
$176.54
Product Details
Location : FrontEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 14 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : 1 Sensor PortOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Replaces OE Number : 55578984Interchange Part Number : 50509, 55578984Series : Direct Replacement SeriesTube Material : Aluminized Steel
Center Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 4.6L Engine
Part Number: REPC960307
Vehicle Info Required to Guarantee Fit
$142.49
Product Details
Location : CenterEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 19 in. Overall LengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/69005NNGasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : 50410Series : Direct Replacement SeriesTube Material : Aluminized Steel
Front Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), 2.4L Engine
Part Number: RB96030001
Vehicle Info Required to Guarantee Fit
$179.60
Product Details
Location : FrontEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Restricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : 19612, 16776Series : Direct Replacement SeriesTube Material : Stainless Steel
Center Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), With 113.0 Wheelbase, 4.2L Engine
Part Number: REPC960310
Vehicle Info Required to Guarantee Fit
$161.28
Product Details
Emissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 50 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/63005NNGasket Included : Without GasketOxygen Sensor Ports : Factory OE PortsOxygen Sensor Port Location : Factory OE LocationsWarranty : 5-year or 50,000-mile Evan Fischer limited warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : 50365Series : Direct Replacement SeriesTube Material : Aluminized Steel
Page 1 of 42 | Showing 1 - 15 of 628 results

Top Rated Products

Looks like a great product however I haven’t had the chance to install them yet
Phillip K.
VERIFIED PURCHASER
Looks to be high quality Good construction We’ll see how it performs once I install See More
Andy N.
VERIFIED PURCHASER

Product Questions & Answers

Q:Will this fit a 2016?
Dom R.
A:BEST ANSWERHi Dominic, I'm glad to assist you. For us to carefully check and be accurate on the part you need, please provide the complete information of your vehicle (year, make, model, submodel, and engine size). The VIN would be much helpful. I hope this helps for now. Show less
Jeonino E.
 
2 Questions, 1 AnswerView all Q&As >
Q:I have a code P0420 will a new Catalytic  help on my cadillac deville 03? Show Less
Jaime P.
A:BEST ANSWERHi Jim, I'm glad to assist you. Yes, it will. I hope this helps, and if you're interested in this catalytic converter, you can click on the link below for direct ordering to take advantage of our ongoing sale and limited stocks. Happy shopping. https://www.carparts.com/catalytic-converter/evan-fischer/repc960307?can=CPAE1047 Show less
Arnel E.
 
3 Questions, 1 AnswerView all Q&As >
Q:Hello! I saw a review that the part didn't quite fit a vehicle it was ordered for and that it was a little noisy?  I have a 2002 Chevy Trailblazer LT and just want to make sure this won't be the case when I get it.  Thanks! Show Less
Cole R.
A:BEST ANSWERHi Cole, I'm glad to help you out. As long as the fit note matches and the installation of the part is done well, everything will be OK. Take advantage of the sale price and limited stocks for this item. Click this link to order this part: https://www.carparts.com/catalytic-converter/evan-fischer/repc960310?can=CPAP3648 I hope this helps. Happy shopping. Show less
Aldrin P.
 
5 Questions, 1 AnswerView all Q&As >

Shopping for Buick Catalytic Converter

During combustion process, hydrocarbons, nitrogen oxide and carbon monoxide are produced. These gases are dangerous when released to the atmosphere, so back in the 70s, a Clean Air Act was passed to limit amount of pollutants being emitted from vehicles. In response to this, auto manufacturers including the Buick added pollution control devices in their automobiles and started to use self adjusting engines.

One of the devices used to control harmful emissions is the catalytic converter. This device looks like a muffler and is a part of the exhaust system of your Buick vehicle. The use of catalytic converters has been required in US since the 1980s; however only gasoline-powered autos have catalytic converters, so diesel-powered Buicks don't have cats. It is called a "catalytic converter" because it has pellets that serve as catalyst that speed up chemical process to convert the exhaust into carbon dioxide and water, which are environment friendly.
 
In the engine, the air and fuel mixture are burned in order to produce power that would drive the wheels to turn. The excess burned gas is then expelled to the exhaust system, particularly in the Buick catalytic converter, so it can be turned into non-harmful emissions before they are sent out in the air. Your Buick catalytic converter is actually an extra place for the oxidation or combustion. Here, the exhaust gas is chemically oxidized with the help of the platinum-made honeycomb.

As the catalytic converter cleans the exhaust by converting it into carbon dioxide or water, it produces heat. Thus, the more harmful exhaust, the more heat it is able to produce. You probably have heard of or have seen a catalytic converter glowing, this is due to the excessive amount of heat it produces. If your Buick catalytic converter reaches this point, it is now more prone to damages. If you are using leaded fuel, your catalytic converter might fail to work because led produces coating on the platinum.

While your Buick is equipped with excellent stock catalytic converters, even the best parts can wear out prematurely. Misfires and other engine issues can cause the catcon to run too hot as it tries to compensate for the erratic performance. In most cases, your first (and usually only) warning of a bad catcon is the check engine light switching on. You may also notice that the engine produces insufficient power, stalls, or cannot start because of backpressure from a carbon-clogged catalytic converter. Always check for these symptoms of a bad Buick catalytic converter before taking your ride to its next emissions test.

Even OE catalytic converters manufactured for Buick by General Motors can reveal issues that require a service bulletin or recall to amend. In one instance, GM recalled a number of 2020 Buick Encore GX that received the wrong catcon. These vehicles released higher levels of emissions in violation of federal and state laws. GM contacted the owners of these affected Encore GX units and replaced the incorrect catalytic converter.

Because the exhaust system and the engine work together, a clogged or damaged catalytic converter can seriously hamper your vehicle’s performance. Don't ignore the faulty part, especially when it's so easy to order an affordable OE-grade replacement here at CarParts.com. Our wide selection of Buick aftermarket parts includes catalytic converters sourced from brands that won the trust of Buick owners across the country. And to make sure you get the most bang for your buck, our team of industry experts made sure each product passed their high standards.

Choose from a variety of Buick catalytic converters designed for models like the Enclave, LaCrosse, LeSabre, and more. Each catcon in our catalog is competitively priced, so that you can get back on the road without paying dealership prices. Our products are on hand and ready to ship from strategically located distribution centers to ensure your order arrives in as little as two business days. We’ve also made it easy to find parts for various models, so you can get specific parts like a 2000 Buick LeSabre catalytic converter with the help of our vehicle selector. Check out our catalytic converters and order today!

Helpful Automotive Resources

P0430 Code: Catalyst System Efficiency Below Threshold  (Bank 2)
P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2)A failing catalytic converter breaks down less pollutants in the exhaust, resulting in lower oxygen (O2) levels overall. The downstream oxygen sensor detects the change and informs the vehicle’s computer. In turn, the computer activates the check engine light and logs the appropriate OBD-II trouble code for diagnosis by a
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3When there are only 3 O2 sensors it’s typically because there’s only one catalyst being monitored, and “Bank 1” is the default designation when there’s only one sensor in a category. Diagram showing 3 oxygen sensors | Image Source: Richard McCuistian
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)To learn why O2 sensors need to be heated, you may read our explanation here.