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2015 Ford Explorer

2015 Ford Explorer Catalytic Converters

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Radiator Side Direct Replacement Series Catalytic Converter, 3.5L Engine, For Models without EcoBoost, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: RF96030008
Guaranteed to Fit
$238.99
Vehicle Fitment
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer Base 6 Cyl 3.5L Naturally Aspirated
Product Details
Location : Front, 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 : Manifold Converter; Includes (4) Hexbolts, (4) Washers, (2) Nuts, and (2) GasketsRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : 2 Sensor 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 : 30584, 19516, 674255, 1378Series : Direct Replacement SeriesTube Material : Stainless Steel
Firewall Side Direct Replacement Series Catalytic Converter, 3.5L Engine, For Models without EcoBoost, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: RF96030007
Guaranteed to Fit
$239.14
Vehicle Fitment
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer Base 6 Cyl 3.5L Naturally Aspirated
Product Details
Location : Front, 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 : Manifold Converter; Includes (4) Hexbolts, (6) Washers, and (1) Manifold Gasket; 13.25 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : 2 Sensor 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 : 30585, 19517, 674256, 1379Series : Direct Replacement SeriesTube Material : Stainless Steel
Firewall and Radiator Side Direct Replacement Series Catalytic Converters, 3.5L Engine, For Models without EcoBoost, 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-RF96030007
Guaranteed to Fit
$453.99
Vehicle Fitment
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer Base 6 Cyl 3.5L Naturally Aspirated
Product Details
Location : Front, 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)Notes : Manifold Converter; Includes (4) Hexbolts, (6) Washers, and (1) Manifold GasketComponents : (1) Front Driver Side, Manifold Catalytic Converter, (1) Front Passenger Side, Manifold Catalytic ConverterRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Set of 2Gasket Included : With GasketOxygen Sensor Ports : 2 Sensor 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 : 30585, 19517, 674256, 1379, 30584, 19516, 674255, 1378Series : Direct Replacement SeriesTube Material : Stainless Steel
Driver Side Exact Fit Series Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: DAV19516
Guaranteed to Fit
$244.99
Vehicle Fitment
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Naturally Aspirated, AWD
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Naturally Aspirated, FWD
  • 2015 Ford Explorer Base 6 Cyl 3.5L Naturally Aspirated, FWD
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 : 14 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold 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 : RF96030008, 674255, 1378Series : Exact Fit SeriesTube Material : Aluminized Steel
Passenger Side Exact Fit Series Catalytic Converter, 6, 3.5 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: DAV19534
Guaranteed to Fit
$413.99
Vehicle Fitment
  • 2015 Ford Explorer Sport 6 Cyl 3.5L Turbocharged, Prod Dates After 5/4/15
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 : Without air tube port provision; 20 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
Driver Side Exact Fit Series Catalytic Converter, 6, 3.5 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: DAV19533
Guaranteed to Fit
$395.49
Vehicle Fitment
  • 2015 Ford Explorer Sport 6 Cyl 3.5L Turbocharged
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 : 14.5 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
Passenger Side Exact Fit Series Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: DAV19517
Guaranteed to Fit
$245.99
Vehicle Fitment
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Naturally Aspirated, AWD
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Naturally Aspirated, FWD
  • 2015 Ford Explorer Base 6 Cyl 3.5L Naturally Aspirated, FWD
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 : 15 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold 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 : RF96030007, 674256, 1379Series : Exact Fit SeriesTube Material : Aluminized Steel
Passenger Side Exact-Fit Series Catalytic Converter, 6, 3.5 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: DAV19513
Guaranteed to Fit
$396.99
Vehicle Fitment
  • 2015 Ford Explorer Sport 6 Cyl 3.5L Turbocharged, Prod Dates 9/4/12 To 5/4/15
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 : 19 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 : 2-year or 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 Series
Rear OEM Grade Series Catalytic Converter, 6, 3.5 Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6621278
Guaranteed to Fit
$677.00
Vehicle Fitment
  • 2015 Ford Explorer Sport 6 Cyl 3.5L Turbocharged
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 : (1) Converter Quantity; 2.25 in. Main Piping Diameter; 5.75 in. Body Length x 4 in. Body Width x 4 in. Body Height; 2.25 in. ID x 2.25 in. OD; Round Body Shape; Spun Body Type; Bolt-On Inlet Attachment; Clamp-On Outlet Attachment; Stainless Steel Material; Pre and Post Converter; Includes Clamp and Hangers; 24.75 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 OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warranty on Construction; 25,000-mile Magnaflow limited warranty on EmissionsProp 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 : OEM Grade SeriesTube Material : Stainless Steel
Front OEM Grade Series Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6651218
Guaranteed to Fit
$656.00
Vehicle Fitment
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer Base 6 Cyl 3.5L Naturally Aspirated
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 : Exhaust Manifold with Integrated Catalytic Converter OEM GRADE Federal (Exc.CA); 13.88 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 25,000 Mile Limited WarrantyProp 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 : OEM Grade SeriesTube Material : Stainless Steel
Rear OEM Grade Series Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Part Number: M6651220
Guaranteed to Fit
$1,241.00
Vehicle Fitment
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Naturally Aspirated
  • 2015 Ford Explorer Base 6 Cyl 3.5L Naturally Aspirated
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 : Exhaust Manifold with Integrated Catalytic Converter OEM GRADE Federal (Exc.CA); 13.75 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 25,000 Mile Limited WarrantyProp 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 : OEM Grade SeriesTube Material : Stainless Steel
California Series Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: M665551997
Guaranteed to Fit
$1,906.00
Vehicle Fitment
  • 2015 Ford Explorer Base 6 Cyl 3.5L Naturally Aspirated, EO# D-193-144; Eng Fam No: Ffmxt03.73E8
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Naturally Aspirated, EO# D-193-144; Eng Fam No: Ffmxt03.73E8
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Naturally Aspirated, EO# D-193-144; Eng Fam No: Ffmxt03.73E8
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : (1) Converter Quantity; 2 in. Main Piping Diameter; 6.75 in. Body Length x 5 in. Body Width x 5 in. Body Height; 2 in. ID x 2 in. OD; Round Body Shape; Spun Body Type; Bolt-On Inlet and Outlet Attachment; Stainless Steel Material; Pre and Post Converter; 13.75 in. overall lengthType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-144Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warrantyProp 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 : California SeriesTube Material : Stainless Steel
California Series Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: M665551218
Guaranteed to Fit
$2,243.00
Vehicle Fitment
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Naturally Aspirated, EO# D-193-144; Eng Fam No: Ffmxt03.73E8
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Naturally Aspirated, EO# D-193-144; Eng Fam No: Ffmxt03.73E8
  • 2015 Ford Explorer Base 6 Cyl 3.5L Naturally Aspirated, EO# D-193-144; Eng Fam No: Ffmxt03.73E8
Product Details
Location : FrontEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : (1) Converter Quantity; 2 in. Main Piping Diameter; 6.5 in. Body Length x 5 in. Body Width x 5 in. Body Height; 2 in. ID x 2 in. OD; Round Body Shape; Spun Body Type; Bolt-On Inlet and Outlet Attachment; Stainless Steel Material; Pre and Post Converter; Mounting Hardware Included; 13.88 in. overall lengthType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-144Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited warrantyProp 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 : California SeriesTube Material : Stainless Steel
Eastern 48-State Direct Fit 30584 Catalytic Converter, Aluminized Steel, Manifold Converter, 48-State Legal (Cannot Ship to CA or NY)
Part Number: EAST30584
Guaranteed to Fit
$355.99
Vehicle Fitment
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Radiator Side
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Radiator Side
  • 2015 Ford Explorer Base 6 Cyl 3.5L Radiator Side
Product Details
Location : Front, 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 : 15 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Eastern limited warrantyProp 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 : RF96030008, 674255, 1378Series : ECO III SeriesTube Material : Aluminized Steel
Eastern 48-State Direct Fit 30585 Catalytic Converter, Aluminized Steel, Manifold Converter, 48-State Legal (Cannot Ship to CA or NY)
Part Number: EAST30585
Guaranteed to Fit
$483.49
Vehicle Fitment
  • 2015 Ford Explorer Limited 6 Cyl 3.5L Firewall Side
  • 2015 Ford Explorer XLT 6 Cyl 3.5L Firewall Side
  • 2015 Ford Explorer Base 6 Cyl 3.5L Firewall Side
Product Details
Location : Front, 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 : 13.25 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Eastern limited warrantyProp 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 : RF96030007, 674256, 1379Series : ECO III SeriesTube Material : Aluminized Steel
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Product Questions & Answers

Q:Do this come with gaskets ?
Trish
A:BEST ANSWERHi Trish, Yes, this comes with the gaskets.
Arnel E.
 
1 Question, 1 AnswerView all Q&As >

Helpful Automotive Resources

P0430 Code: Catalyst System Efficiency Below Threshold  (Bank 2)
P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2)In most cases, a vehicle with an inefficient catalytic converter will continue to run just fine. But if the converter is obstructed internally, it can cause poor engine performance and may even damage the engine in the long run.
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3Bank 1 is the side of the engine where the #1 cylinder is located. P0042 code is set when your car’s PCM determines a potential problem with the heater element circuit of the oxygen sensor.
Can You Drive Without a Catalytic Converter?
Can You Drive Without a Catalytic Converter?Technically, yes. Older cars ran just fine before catalytic converters became commonplace in the 1970s. So, if your question is whether your car will run without one, then it most certainly will. But the other question you should be asking is—should you risk it?  Removing or disabling the catalytic converter could
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)The PCM may disable the misfiring cylinder or cylinders in order to prevent further damage to the engine. Code P0316 is often listed in addition to one or more of the P0300 series codes that are associated with the misfiring cylinder/s.
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)The Bank 1 portion of the code refers to the side of the engine with the number one cylinder. Sensor 1 refers to the upstream O2 sensor.
How to Tell If the Catalytic Converter is Clogged
How to Tell If the Catalytic Converter is CloggedA clogged catalytic converter will present symptoms, while a chemically failed cat con that’s not clogged typically just illuminates the check engine light or malfunction indicator lamp (MIL). Also, if the cat con that just fails chemically but doesn’t clog is not the light-off cat con (the cat con closest