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1999 Hyundai Elantra
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1999 Hyundai Elantra

1999 Hyundai Elantra Catalytic Converters

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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), With Integrated Exhaust Manifold, 1.8L/2.0L Eng
JC Whitney®
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), With Integrated Exhaust Manifold, 1.8L/2.0L Eng
Part Number: JH960312
Guaranteed to Fit
$234.99
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L Manifold Converter
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L Manifold Converter
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 : Manifold ConverterRestricted States : California|Colorado|New York|MaineType : Manifold 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 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 : 18263, 40581, 1426, 641526Series : 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), Manifold Converter
Evan Fischer®
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), Manifold Converter
Part Number: REPH960312
Guaranteed to Fit
$232.99
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L
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 : Manifold ConverterRestricted States : California|Colorado|New York|MaineType : Manifold 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 : 40581Series : Direct Replacement SeriesTube Material : Aluminized Steel
Center Standard Series Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Davico®
Center Standard Series Direct Fit 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: DAV13060
Guaranteed to Fit
$177.49
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L
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 : 14.5 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 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 : Standard SeriesTube Material : Aluminized Steel
Sedan Center Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Davico®
Sedan Center Direct Fit 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: DAV179802
Guaranteed to Fit
$753.99
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L Sedan, Emission Std: LEV1 LEV; Engine Family: Xhyxv02.03Rc; Weight Class: Pc
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L Sedan, Emission Std: LEV1 LEV; Engine Family: Xhyxv02.03Rc; Weight Class: Pc
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 : 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.

Tube Material : Aluminized Steel
Front Standard Series Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Davico®
Front Standard Series Direct Fit 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: DAV18263
Guaranteed to Fit
$269.99
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L Manifold Converter
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L Manifold Converter
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 : 20.5 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.

Series : Standard SeriesTube Material : Aluminized Steel
No Returns Accepted - Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)
Magnaflow®
No Returns Accepted - Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)
Part Number: M66457104
Guaranteed to Fit
$377.00
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L EO# D-193-124; Eng Fam No: Xhyxv02.03Rc; Cutting And Welding Required
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L EO# D-193-124; Eng Fam No: Xhyxv02.03Rc; Cutting And Welding Required
Product Details
Emissions : 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-193-124Gasket Included : Without GasketWarranty : 5-year or 50,000-mile Magnaflow limited warrantyReturns Policy : NON-RETURNABLEProp 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
OEM Grade Series Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Magnaflow®
OEM Grade Series Direct Fit 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: M6652447
Guaranteed to Fit
$680.00
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L
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 : 20.13 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 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
No Returns Accepted - Catalytic Converter, 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)
Eastern®
No Returns Accepted - Catalytic Converter, 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)
Part Number: EAST82724
Guaranteed to Fit
$158.99
Vehicle Fitment
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L Undercar
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L Undercar
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 : 14 in. in length with 2 in. inlet and outlet diameter; 14 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 : 5-year or 50,000-mile Eastern limited warrantyReturns Policy : NON-RETURNABLEProp 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 : ECO II SeriesTube Material : Aluminized Steel
No Returns Accepted - Catalytic Converter, 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)
Walker®
No Returns Accepted - Catalytic Converter, 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)
Part Number: WK93237
Guaranteed to Fit
$144.49
Vehicle Fitment
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L No Port Location
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L No Port Location
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 : 13.25 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 : 5-year or 50,000-mile Walker limited warrantyReturns Policy : NON-RETURNABLEProp 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 : Ultra SeriesTube Material : Stainless Steel
No Returns Accepted - Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)
Walker®
No Returns Accepted - Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)
Part Number: WK81652
Guaranteed to Fit
$277.49
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L Engine Family Number (EFN) XHYXV02.01RF
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L Engine Family Number (EFN) XHYXV02.01RF
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 13.25 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-182-48Gasket Included : Without GasketWarranty : 5-year or 50,000-mile Walker limited warrantyReturns Policy : NON-RETURNABLEProp 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 : CalCat SeriesTube Material : Stainless Steel
Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Catco®
Direct Fit 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: CAT2504
Guaranteed to Fit
$202.49
Vehicle Fitment
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L California Emissions, Not For Sale Or Use On Vehicles Licensed In The State Of Ca & Ny
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L California Emissions, Not For Sale Or Use On Vehicles Licensed In The State Of Ca & Ny
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)Product Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyWarranty : 5-year or 50,000-mile Catco 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.

OE Solutions Series Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
Dorman®
OE Solutions Series Direct Fit 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: RB674551
Guaranteed to Fit
$383.99
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L With Federal Emissions
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L With Federal Emissions
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 : 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 Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Nickel, 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 : 641526, 101307, 096-1310, 4165, 40581, 16482, 2851023270, 2851023430, 2851023431, 2851023710, 2851023711, 2851023720, 2851023721, 2851123302, 28952340, 51023710, 51023720, 49280, 49304, 50223, 52447, 642745Interchange Part Number : ARBH960703, 641526, 101307, 096-1310, 4165, 40581, 16482, 2851023270, 2851023430, 2851023431, 2851023710, 2851023711, 2851023720, 2851023721, 2851123302, 28952340, 51023710, 51023720, 49280, 49304, 50223, 52447, 642745Series : OE Solutions SeriesTube Material : Cast Iron
No Returns Accepted - Catalytic Converter, 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)
Catco®
No Returns Accepted - Catalytic Converter, 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)
Part Number: CAT2734R
Guaranteed to Fit
$468.99
Vehicle Fitment
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L California Emissions
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L California Emissions
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 : 16 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 : 5-year or 50,000-mile Catco limited warranty on converter body with 25,000-mile limited warranty on emissionsReturns Policy : NON-RETURNABLEProp 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.

Tube Material : Stainless Steel
Direct Fit Catalytic Converter, Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)
AP Exhaust®
Direct Fit 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: APE608734
Guaranteed to Fit
$335.49
Vehicle Fitment
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L
Product Details
Location : Rear, Driver or Passenger SideEmissions : Federal EPA Standard, 46-State Legal (Cannot ship to or be installed in vehicles originally purchased in CA, CO, NY or ME)Product Fit : Direct FitRecommended Use : OE ReplacementWarranty : 5-year or 50,000-mile AP Exhaust limited warranty on converter body and 50,000-mile 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.

OE Solutions Series Direct Fit Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Dorman®
OE Solutions Series Direct Fit Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: RB6735511
Guaranteed to Fit
$551.99
Vehicle Fitment
  • 1999 Hyundai Elantra GLS 4 Cyl 2.0L With California Emissions; Engine Family Number (Efn) Xhyxv02.03Rc; Carb Executive Order Number: D-665-23
  • 1999 Hyundai Elantra GL 4 Cyl 2.0L With California Emissions; Engine Family Number (Efn) Xhyxv02.03Rc; Carb Executive Order Number: D-665-23
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : (2) Inlet Quantity; Round Exhaust Manifold Inlet Port; Includes Gasket or Seal and Installation HardwareType : Manifold ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-665-23Oxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Dorman 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.

Replaces OE Number : 771072, 808560, 2851023431, 2851023711, 452035, 452038Interchange Part Number : 771072, 808560, 2851023431, 2851023711, 452035, 452038Series : OE Solutions SeriesTube Material : Cast/Stainless
Page 1 of 3 | Showing 1 - 15 of 43 results

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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