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2012 Buick LaCrosse
2012 Buick LaCrosse Catalytic Converters
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Part Number: RB96030001
Guaranteed to Fit
$179.60
Vehicle Fitment
- 2012 Buick LaCrosse Convenience 4 Cyl 2.4L
- 2012 Buick LaCrosse Leather 4 Cyl 2.4L
- 2012 Buick LaCrosse Base 4 Cyl 2.4L
- 2012 Buick LaCrosse Premium 4 Cyl 2.4L
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: 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.
Part Number: M6651206
Guaranteed to Fit
$194.00
Vehicle Fitment
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L Front Wheel Drive, Cutting And Welding Required
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L Front Wheel Drive, Cutting And Welding Required
- 2012 Buick LaCrosse Base 6 Cyl 3.6L Front Wheel Drive, Cutting And Welding Required
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L Front Wheel Drive, Cutting And Welding Required
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L Front Wheel Drive, Cutting And Welding Required
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 : 13.75 in. L x 5 in. W x 4.75 in. HRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketWarranty : Magnaflow 5 year / 50,000 Mile Limited WarrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: DAV19612
Guaranteed to Fit
$230.49
Vehicle Fitment
- 2012 Buick LaCrosse Convenience 4 Cyl 2.4L
- 2012 Buick LaCrosse Leather 4 Cyl 2.4L
- 2012 Buick LaCrosse Base 4 Cyl 2.4L
- 2012 Buick LaCrosse Premium 4 Cyl 2.4L
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 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: 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.
Part Number: DAV19608
Guaranteed to Fit
$418.49
Vehicle Fitment
- 2012 Buick LaCrosse Base 6 Cyl 3.6L Naturally Aspirated, FWD, With Pzev Emission
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L Naturally Aspirated, FWD, With Pzev Emission
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L Naturally Aspirated, FWD, With Pzev Emission
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L Naturally Aspirated, FWD, With Pzev Emission
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L Naturally Aspirated, FWD, With Pzev Emission
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 : 13.13 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: 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.
Part Number: DAV19510
Guaranteed to Fit
$224.99
Vehicle Fitment
- 2012 Buick LaCrosse Base 6 Cyl 3.6L
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L
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 : Illegal for installation in NY on vehicles equipped with California emission systems; 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 : 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: 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.
Part Number: DAV19605
Guaranteed to Fit
$277.49
Vehicle Fitment
- 2012 Buick LaCrosse Base 6 Cyl 3.6L Naturally Aspirated, With Pzev Emission
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L Naturally Aspirated, With Pzev Emission
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L Naturally Aspirated, With Pzev Emission
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L Naturally Aspirated, With Pzev Emission
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L Naturally Aspirated, With Pzev Emission
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 : 16 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: 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.
Part Number: DAV19520
Guaranteed to Fit
$240.99
Vehicle Fitment
- 2012 Buick LaCrosse Base 6 Cyl 3.6L
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L
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 : Illegal for installation in NY on vehicles equipped with California emission systems; 15.25 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 : 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: 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.
Part Number: M66557405
Guaranteed to Fit
$353.00
Vehicle Fitment
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L All Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Base 6 Cyl 3.6L All Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L All Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L All Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L All Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 13 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-133Gasket Included : Without GasketWarranty : 5-year or 50,000-mile Magnaflow limited warrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: M66557406
Guaranteed to Fit
$353.00
Vehicle Fitment
- 2012 Buick LaCrosse Base 6 Cyl 3.6L Front Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L Front Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L Front Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L Front Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L Front Wheel Drive, EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 13 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-133Gasket 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: 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.
Part Number: M6651205
Guaranteed to Fit
$194.00
Vehicle Fitment
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L All Wheel Drive, Cutting And Welding Required
- 2012 Buick LaCrosse Base 4 Cyl 2.4L Cutting And Welding Required
- 2012 Buick LaCrosse Base 6 Cyl 3.6L All Wheel Drive, Cutting And Welding Required
- 2012 Buick LaCrosse Leather 4 Cyl 2.4L Cutting And Welding Required
- 2012 Buick LaCrosse Convenience 4 Cyl 2.4L Cutting And Welding Required
- 2012 Buick LaCrosse Premium 4 Cyl 2.4L Cutting And Welding Required
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L All Wheel Drive, Cutting And Welding Required
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L All Wheel Drive, Cutting And Welding Required
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L All Wheel Drive, Cutting And Welding Required
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 : 2.25 in. Inlet/Outlet; 13 in. overall lengthRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyGasket Included : Without GasketWarranty : Magnaflow 5 year / 50,000 Mile Limited WarrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: M665421205
Guaranteed to Fit
$337.00
Vehicle Fitment
- 2012 Buick LaCrosse Premium 4 Cyl 2.4L EO# D-193-147; Eng Fam No: Cgmxv02.4060; Except Partial Zero Emissions Vehicle (Pzev)
- 2012 Buick LaCrosse Leather 4 Cyl 2.4L EO# D-193-147; Eng Fam No: Cgmxv02.4060; Except Partial Zero Emissions Vehicle (Pzev)
- 2012 Buick LaCrosse Base 4 Cyl 2.4L EO# D-193-147; Eng Fam No: Cgmxv02.4060; Except Partial Zero Emissions Vehicle (Pzev)
- 2012 Buick LaCrosse Convenience 4 Cyl 2.4L EO# D-193-147; Eng Fam No: Cgmxv02.4060; Except Partial Zero Emissions Vehicle (Pzev)
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 9.13 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-147Gasket Included : Without GasketWarranty : 5-year or 50,000-mile Magnaflow limited warrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: M66551005
Guaranteed to Fit
$465.00
Vehicle Fitment
- 2012 Buick LaCrosse Base 6 Cyl 3.6L EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L EO# D-193-133; Eng Fam No: Cgmxj03.6166; Cutting And Welding Required
Product Details
Location : Front, Driver or Passenger SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 7 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-133Gasket Included : Without GasketWarranty : 5-year or 50,000-mile Magnaflow limited warrantyReturns Policy : NON-RETURNABLEProp 65 Warning :
WARNING: 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.
Part Number: M665671605
Guaranteed to Fit
$476.00
Vehicle Fitment
- 2012 Buick LaCrosse Base 4 Cyl 2.4L EO# D-193-155; Eng Fam No: Cgmxv02.4061; Eng Fam No: Cgmxv02.4069; Cutting And Welding Required
- 2012 Buick LaCrosse Premium 4 Cyl 2.4L EO# D-193-155; Eng Fam No: Cgmxv02.4061; Eng Fam No: Cgmxv02.4069; Cutting And Welding Required
- 2012 Buick LaCrosse Convenience 4 Cyl 2.4L EO# D-193-155; Eng Fam No: Cgmxv02.4061; Eng Fam No: Cgmxv02.4069; Cutting And Welding Required
- 2012 Buick LaCrosse Leather 4 Cyl 2.4L EO# D-193-155; Eng Fam No: Cgmxv02.4061; Eng Fam No: Cgmxv02.4069; Cutting And Welding Required
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)Restricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited construction warranty and 25,000-mile Magnaflow limited emission warrantyProp 65 Warning :
WARNING: 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.
Part Number: M6621177
Guaranteed to Fit
$636.00
Vehicle Fitment
- 2012 Buick LaCrosse Convenience 4 Cyl 2.4L
- 2012 Buick LaCrosse Leather 4 Cyl 2.4L
- 2012 Buick LaCrosse Base 4 Cyl 2.4L
- 2012 Buick LaCrosse Premium 4 Cyl 2.4L
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; 9.13 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 and Outlet Attachment; Stainless Steel Material; Pre Converter; Includes Hangers and Gasket; 38.13 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: 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.
Part Number: M6652896
Guaranteed to Fit
$644.00
Vehicle Fitment
- 2012 Buick LaCrosse Base 6 Cyl 3.6L All Wheel Drive
- 2012 Buick LaCrosse Convenience 6 Cyl 3.6L All Wheel Drive
- 2012 Buick LaCrosse Leather 6 Cyl 3.6L All Wheel Drive
- 2012 Buick LaCrosse Touring 6 Cyl 3.6L All Wheel Drive
- 2012 Buick LaCrosse Premium 6 Cyl 3.6L All Wheel Drive
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; Bolt-On Inlet Attachment; Bolt-On Outlet Attachment; Stainless Steel Material; Ceramic Substrate Material; Includes Gasket(s); 56.5 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 : 5-year or 50,000-mile Magnaflow limited warranty on Construction; 25,000-mile Magnaflow limited warranty on EmissionsProp 65 Warning :
WARNING: 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.
Page 1 of 7 | Showing 1 - 15 of 93 results
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FEDERAL EPA STANDARD, 46-STATE LEGAL (CANNOT SHIP TO OR BE USED IN VEHICLES ORIGINALLY PURCHASED IN CA, CO, NY OR ME) SEMI-UNIVERSAL (WELDING REQUIRED) MAGNAFLOW CATALYTIC CONVERTER
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FEDERAL EPA STANDARD, 46-STATE LEGAL (CANNOT SHIP TO OR BE USED IN VEHICLES ORIGINALLY PURCHASED IN CA, CO, NY OR ME) DIRECT FIT DAVICO CATALYTIC CONVERTER
Carefully crafted to be easily installed without a need for cutting, sliding, clamping or welding, Davico&rsquo...Related Parts
Helpful Automotive Resources
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 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?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)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)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 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