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Volkswagen Passat Catalytic Converters

Don’t take an emissions test if your Volkswagen Passat's catalytic converter is faulty. Fix your Volkswagen by replacing its worn-out catalytic converter as soon as you can. Fortunately, you can get OE-grade Volkswagen Passat catalytic converters here at CarParts.com. We have a great selection of Volkswagen parts available at competitive prices. Our available products are ready to ship, so your order can reach your doorstep in as fast as two business days. Check out our Volkswagen Passat catalytic converters now and place your order today!
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Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), Direct Replacement Series
Part Number: REPV960318
Vehicle Info Required to Guarantee Fit
$241.14
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 : 64 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/30407NN, N/TB6000/64805NNGasket 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 : 40628Series : Direct Replacement SeriesTube Material : Aluminized Steel
Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), Direct Replacement Series
Part Number: REPA960305
Vehicle Info Required to Guarantee Fit
$143.97
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)Restricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/64805NNGasket 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 : 4186Series : Direct Replacement SeriesTube Material : Aluminized Steel
Passenger 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), With Automatic Transmission, 2.8L Engine
Part Number: REPV960306
Vehicle Info Required to Guarantee Fit
$223.86
Product Details
Location : Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 48.5 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/501-430, 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 : 40464Series : Direct Replacement SeriesTube Material : Aluminized Steel
Driver 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), With Automatic Transmission, 2.8L Engine
Part Number: REPV960305
Vehicle Info Required to Guarantee Fit
$223.49
Product Details
Location : Driver SideEmissions : 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/TB6000/501-430, N/TB6000/63005NNGasket 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 : 40463Series : Direct Replacement SeriesTube Material : Aluminized Steel
Driver and Passenger 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)
Part Number: SET-REPV960306
Vehicle Info Required to Guarantee Fit
$424.99
Product Details
Location : 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) Driver Side Catalytic Converter, (1) Passenger Side Catalytic ConverterRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Set of 2EPA : N/TB6000/501-430, N/TB6000/63005NNOxygen 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 : 40463, 40464Series : Direct Replacement SeriesTube Material : Aluminized Steel
Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), Direct Replacement Series
Part Number: REPV960308
Vehicle Info Required to Guarantee Fit
$245.38
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 : 39.75 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEPA : N/TB6000/64805NN, N/TB6000/30005NNGasket 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 : 4447, 24320, 40594, 40776, 49990, 52384, 52385, 642218, 644136, 645194, 961937, 991935, 1K0253058FJ, 1K0254503C, 1K0254506T, 1K0254510T, 1K0254511P, 1K0254512R, 5C0253059AMInterchange Part Number : 54751, 4447, 24320, 40594, 40776, 49990, 52384, 52385, 642218, 644136, 645194, 961937, 991935, 1K0253058FJ, 1K0254503C, 1K0254506T, 1K0254510T, 1K0254511P, 1K0254512R, 5C0253059AMSeries : Direct Replacement SeriesTube Material : Aluminized Steel
Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), Direct Replacement Series
Part Number: EV96030001
Vehicle Info Required to Guarantee Fit
$261.99
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 : 62 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket 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 : 16553, 40628, 0991934Series : Direct Replacement SeriesTube Material : Stainless Steel
6-Piece Kit Driver and Passenger Side Catalytic Converter, Federal EPA Standard, 46-State (Cannot ship to/installed in vehicles purchased in CA/CO/NY/ME), includes Oxygen Sensors
Part Number: KIT-082316-16
Vehicle Info Required to Guarantee Fit
$534.99
Product Details
Location : 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) Driver Side Catalytic Converter, (1) Passenger Side Catalytic Converter, (2) After Catalytic Converter, Driver Side Oxygen Sensors, (2) Before Catalytic Converter, Driver Side Oxygen SensorsRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : KitEPA : N/TB6000/501-430, N/TB6000/63005NNGasket 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 : 40463, 40464, 25024414, 25024395Series : Direct Replacement SeriesTube Material : Aluminized Steel
Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME), Direct Replacement Series
Part Number: KIT-082316-05
Vehicle Info Required to Guarantee Fit
$204.99
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)Components : (1) Catalytic Converter, (1) Before Catalytic Converter Oxygen Sensor, (1) After Catalytic Converter Oxygen SensorRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : KitEPA : N/TB6000/64805NNGasket 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 : 4186, 25025004, 25024432Series : Direct Replacement SeriesTube Material : Aluminized Steel
Passenger 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), Direct Replacement Series
Part Number: KIT-082316-13
Vehicle Info Required to Guarantee Fit
$253.99
Product Details
Location : Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 48.5 in. overall lengthComponents : (1) Passenger Side Catalytic Converter, (2) After Catalytic Converter, Driver Side Oxygen SensorsRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : KitEPA : N/TB6000/501-430, 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 : 40464, 25024414Series : Direct Replacement SeriesTube Material : Aluminized Steel
Driver 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), Direct Replacement Series
Part Number: KIT-082316-14
Vehicle Info Required to Guarantee Fit
$280.99
Product Details
Location : Driver SideEmissions : 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 lengthComponents : (1) Driver Side Catalytic Converter, (2) Before Catalytic Converter, Driver Side Oxygen SensorsRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : KitEPA : N/TB6000/501-430, N/TB6000/63005NNGasket 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 : 40463, 25024395Series : Direct Replacement SeriesTube Material : Aluminized Steel
Driver 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), Direct Replacement Series
Part Number: KIT-082316-15
Vehicle Info Required to Guarantee Fit
$253.99
Product Details
Location : Driver SideEmissions : 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 lengthComponents : (1) Driver Side Catalytic Converter, (2) After Catalytic Converter, Driver Side Oxygen SensorsRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : KitEPA : N/TB6000/501-430, N/TB6000/63005NNGasket 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 : 40463, 25024414Series : Direct Replacement SeriesTube Material : Aluminized Steel
Passenger 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), Direct Replacement Series
Part Number: KIT-082316-12
Vehicle Info Required to Guarantee Fit
$280.99
Product Details
Location : Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Notes : 48.5 in. overall lengthComponents : (1) Passenger Side Catalytic Converter, (2) Before Catalytic Converter, Driver Side Oxygen SensorsRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : KitEPA : N/TB6000/501-430, 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 : 40464, 25024395Series : Direct Replacement SeriesTube Material : Aluminized Steel
18424 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), Exact Fit Series
Part Number: DAV18424
Vehicle Info Required to Guarantee Fit
$335.49
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 : 40.5 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 OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and weldsProp 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 : Exact Fit SeriesTube Material : Aluminized Steel
18033 Passenger 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), Standard Series
Part Number: DAV18033
Vehicle Info Required to Guarantee Fit
$215.49
Product Details
Location : Passenger SideEmissions : 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 individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and weldsProp 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 : 23211Series : Standard SeriesTube Material : Aluminized Steel
Page 1 of 13 | Showing 1 - 15 of 189 results

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Customer Guides

Over time, your Volkswagen Passat catalytic converter can get worn out due to external factors like road debris and corrosion or due to some engine issues. Once your catalytic converter fails, the performance of your ride can be compromised because the unburned gases will not be able to exit from your vehicle. Hence, you must be aware of the warning signals that can indicate a possible replacement of your Volkswagen Passat catalytic converter. Listed here are some issues that you must be aware of:

Rattling noise

You can hear this noise when you are driving or when you have removed your catalytic converter for inspection. Rattling noise is an indication that your catalytic converter is possibly failing. This is because once dirt and other road debris find their way to your catalytic converter, they can cause its inner ceramic catalyst to get damaged. This situation is also called as catalyst fracture. Once this happens, the pieces from the ceramic catalyst that got broken will eventually end up becoming smaller. As a result, they will rattle inside your catalytic converter.

Decrease in fuel economy

If you start to notice that you are not going faster than what you have expected upon stepping on the gas pedal, then your catalytic converter is encountering problems. This is because once your catalytic converter starts to fail or wear out, it will not be able to act upon the unburned exhaust gases properly. As a result, the toxic gases can remain clogged in it. These gases will then cause the performance of the engine to depreciate while running because they cannot exit your vehicle.

Visible carbon build-up

If you notice that there is excessive carbon build-up from the exhaust, which comes in the form of a dark smoke, then it possibly means that your catalytic converter needs to be replaced immediately. This is because once the antifreeze leaks on the catalytic converter, its harsh chemicals can affect the performance of your catalytic converter. If your catalytic converter starts to malfunction because of this, it can let excessive carbon to come out from the exhaust.

How long does a Volkswagen Passat Catalytic Converter last?

Catalytic converters were designed to last the Volkswagen Passat's lifetime. With proper maintenance and use, it should at least last for 50,000 miles or 5 years. Modern cars and trucks have catalytic converters that can last up to 80,000 miles or 8 years. Catalytic converters are integral parts of the vehicle's engine and exhaust system, to achieve the lowest possible emissions.

 

What are the most common reasons why catalytic converters fail?

Catalytic converters do not have mechanical working parts in them. Its function is to filter the harmful emissions before it's released into the atmosphere. Poor installation can cause a catalytic converter to fail. Sometimes, the converter's gaskets have not been replaced during installation. Using fuel and engine additives, which are not oxygen-sensor safe, can also contribute to a catalytic converter's failure. Poor engine maintenance can also affect the performance of your catalytic converter. Physical damage, like dents or cracks, is the most common reason why a catalytic converter breaks down.

 

What type of catalytic converter should be installed on a Volkswagen Passat?

There are two types of catalytic converters available for a Volkswagen Passat: the common catcon or the two-way version and the high-end catcon, or the three-way version. A common cat converter offers the simplest process and it’s widely available. High-end converters on the other hand, are designed for leaner engines to maximize their efficiency. It’s important to know the right catalytic converter before installing a new one on the Volkswagen Passat.

 

When should a Volkswagen Passat's catalytic converter be replaced?

One of the most common signs that you need to change the Volkswagen Passat's catalytic converter is when the car refuses to start. When the catalytic converter becomes so clogged, the exhaust gases can't pass through it and the engine eventually dies. Oil or coolant leaks can also contaminate the ceramics inside the catalytic converter's chamber, causing it to clog. Another reason is when you have a faulty oxygen sensor; it can alter the engine's air/fuel mixture damaging the catalytic converter. Also, when the car fails the emissions test, it's time to replace the catalytic converter.

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.