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2009 Chevrolet Express 1500

2009 Chevrolet Express 1500 Catalytic Converters

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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) -
Part Number: EF96030009
Guaranteed to Fit
$606.14
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L
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 : 3 Bolt Welded Flange Inlet Type A; 3 Bolt Loose Flange with Flare Inlet Type B; 2 Bolt Welded Outlet Type A; Ceramic Substrate MaterialRestricted States : California|Colorado|New York|MaineType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyOxygen 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 : 19418962Interchange Part Number : 645777, 0795323, 9872, 50502, 19418962Tube 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)
Part Number: M6651206
Guaranteed to Fit
$194.00
Vehicle Fitment
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L Cutting And Welding Required
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L Cutting And Welding Required
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L Cutting And Welding Required
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L Cutting And Welding Required
Product Details
Location : Front, 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)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 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.

Promotions : Magnaflow Catalytic Converter SaleSeries : OEM Grade SeriesTube Material : Stainless Steel
Center Exact Fit 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: DAV19464
Guaranteed to Fit
$653.99
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L
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 : 61 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
No Returns Accepted - Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)
Part Number: M665481306
Guaranteed to Fit
$729.00
Vehicle Fitment
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L EO# D-193-146; Eng Fam No: 9Gmxt04.3186; Cutting And Welding Required
Product Details
Location : Front, Driver or Passenger SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 9 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-146Gasket 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 Semi-Universal (Welding Required) 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: M6651659
Guaranteed to Fit
$281.00
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L
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 : 3 in. Inlet/OutletProduct Fit : Semi-Universal (Welding Required)Recommended Use : Performance 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
No Returns Accepted - Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal, Semi-Universal (Welding Required)
Part Number: M665491306
Guaranteed to Fit
$641.00
Vehicle Fitment
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L EO# D-193-146; Eng Fam No: 9Gmxt04.3186; Cutting And Welding Required
Product Details
Location : RearEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 9 in. overall lengthType : Catalytic ConverterProduct Fit : Semi-Universal (Welding Required)Recommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-146Gasket 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
Front, Driver or Passenger Side California Series Semi-Universal (Welding Required) Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: M665582306
Guaranteed to Fit
$1,663.00
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L Certification Level : Lev2 Ulev; Engine Family Number 9Gmxt05.3380; Engine Family Number 9Gmxt05.3381
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L Certification Level : Lev2 Ulev; Engine Family Number 9Gmxt05.3380; Engine Family Number 9Gmxt05.3381
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L Certification Level : Lev2 Ulev; Engine Family Number 9Gmxt05.3380; Engine Family Number 9Gmxt05.3381
Product Details
Location : Front, Driver or Passenger SideEmissions : CARB and Federal EPA Standards, 50-state LegalNotes : 2.5 in. Inlet/OutletProduct Fit : Semi-Universal (Welding Required)Recommended Use : Performance ReplacementQuantity Sold : Sold individuallyEO Number : D-193-148Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 5 year / 50,000 Mile 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 Direct Fit Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: M665582134
Guaranteed to Fit
$5,304.00
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L EO# D-193-148; Eng Fam No: 9Gmxt05.3381; Eng Fam No: 9Gmxt05.3380
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L EO# D-193-148; Eng Fam No: 9Gmxt05.3381; Eng Fam No: 9Gmxt05.3380
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L EO# D-193-148; Eng Fam No: 9Gmxt05.3381; Eng Fam No: 9Gmxt05.3380
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : (3) Converter Quantity; 2.5 in. Main Piping Diameter; x 5 in. Body Width x 5 in. Body Height; 2.5 in. ID x 3 in. OD; Round Body Shape; Spun Body Type; Bolt-On Inlet and Outlet Attachment; Stainless Steel Material; Pre and Post Converter; Includes Clamp and Gasket; 63.38 in. overall lengthType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-193-148Gasket Included : With 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
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: M6652134
Guaranteed to Fit
$1,107.00
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L
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 : 63.88 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 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
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: EAST50502
Guaranteed to Fit
$708.99
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L Undercar
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L Undercar
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L Undercar
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L Undercar
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 : 60 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 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.

Tube Material : Aluminized 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)
Part Number: CAT9872
Guaranteed to Fit
$803.99
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L Federal and California Emissions
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L Federal and California Emissions
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L Federal and California Emissions
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L Federal and California 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)Notes : 60 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 Catco limited warranty on converter body with 25,000-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.

Tube Material : Stainless Steel
Ultra 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: WK50601
Guaranteed to Fit
$864.49
Vehicle Fitment
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L
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 : 10 in. Body Length; 5.75 in. Body Width; 4.25 in. Body Height; 3.63 in. Inlet ID; 1 Outlet Quantity; 2.75 in. Outlet OD; 2 Bolt Welded Flange Outlet Type; Stainless Steel Material; Standard Oval Body Shape; Does not include Mounting Hardware; 67.75 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 : 25,000-mile Walker limited warranty on catalytic performance and 5-year or 50,000-mile structural integrity 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 : Ultra Series
Direct Fit Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: CAT774763
Guaranteed to Fit
$2,095.99
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L 9GMXT05.3380 / 9GMXT05.3381; EO Number : D-798-14
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L 9GMXT05.3380 / 9GMXT05.3381; EO Number : D-798-14
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L 9GMXT04.3186; EO Number : D-798-14
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L 9GMXT05.3380 / 9GMXT05.3381; EO Number : D-798-14
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-798-14Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Catco limited warranty on converter body with 25,000-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.

Tube Material : Stainless Steel
Direct Fit Catalytic Converter, CARB and Federal EPA Standards, 50-state Legal
Part Number: APE774763
Guaranteed to Fit
$2,032.49
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L EFN No. 9GMXT05.3381, 9GMXT05.3380
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L EFN No. 9GMXT05.3381, 9GMXT05.3380
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L EFN No. 9GMXT04.3186
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L EFN No. 9GMXT05.3381, 9GMXT05.3380
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalNotes : 60 in. Overall Length; Stainless Steel Body Material; Ceramic Substrate Material; 3 Bolt Welded Flange Inlet; 2 Bolt Welded Flange OutletProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : Sold individuallyEO Number : D-798-14Gasket Included : With GasketWarranty : 5-year or 50,000-mile AP Exhaust limited warranty on converter body and 25,000-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.

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: APE645777
Guaranteed to Fit
$672.49
Vehicle Fitment
  • 2009 Chevrolet Express 1500 LS 8 Cyl 5.3L Direct Fit
  • 2009 Chevrolet Express 1500 Base 8 Cyl 5.3L Direct Fit
  • 2009 Chevrolet Express 1500 Base 6 Cyl 4.3L Direct Fit
  • 2009 Chevrolet Express 1500 LT 8 Cyl 5.3L Direct Fit
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 : 60 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 AP Exhaust limited warranty on converter body and 25,000-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.

Tube Material : Stainless Steel
Page 1 of 3 | Showing 1 - 15 of 40 results

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Product Questions & Answers

Q:I'd like to know if this catalytic converter fits for a 2012 GMC savanna 3500 V8 4.8? Show Less
Wilgens F.
A:BEST ANSWERHi Wilgens, thanks for initiating contact. Yes, this Federal emission catalytic converter will fit the 8 Cyl 4.8L of the 2012 GMC Savana 3500. Please check the Vehicle Emission Control Information sticker, usually found underneath the hood, to see if it matches the emission control specifications. Federal emissions (46-state) stickers will simply say, "This vehicle conforms to U.S. EPA regulations," whereas California-emissions (50-state, CARB) vehicles will say, "This vehicle conforms to U.S. EPA and the State of California regulations." If everything checks out, click the link below for direct ordering to take advantage of our ongoing discount and limited stocks. Happy shopping! https://www.carparts.com/catalytic-converter/ap-exhaust/ape645777?can=CPGG850_CSQA_20240606 Show less
Grace G.
 
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