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Daewoo Oxygen Sensors
21 itemsShop best-selling oxygen sensors for Ford, Chevy, Honda, Nissan, Toyota, and more. Direct-fit O2 sensors with fast response, improved MPG, and reliable emissions performance.
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A-Premium®Part # APOS0065
1999-2002 Daewoo Nubira Downstream O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium APOS0065
4.5684 Reviews
$23.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits Daewoo Nubira: 1999 2000 2001 2002
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Vehicle: Daewoo
Installation PositionDownstream
Item LocatedUnited States
ConditionNew
item #10030YHR
Note
This item fits Model with VIN: Z.
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A-Premium®Part # OS168
1999-2002 Daewoo Lanos O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS168
4.5684 Reviews
$22.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits Daewoo Lanos: 1999 2000 2001 2002
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #1012R5QZ
Note
Oxygen Senor - B1S1 Indicates Bank 1 Sensor 1, B1S2 Indicates Bank 1 Sensor 2, B2S1 Indicates Bank 2 Sensor 1, B2S1 Indicates Bank 1 Sensor 2.
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AisinPart # OXSAZ-00288
1999-2002 Daewoo Lanos Upstream or Downstream or Center O2 Oxygen Sensor | 1-Pc Direct-Fit | Aisin OXSAZ-00288
4.5684 Reviews
$43.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits Daewoo Lanos: 1999 2000 2001 2002
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Vehicle: Daewoo
Quantity1
Installation PositionUpstream or Downstream or Center
Item LocatedUnited States
ConditionNew
item #1018GHS6
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DensoPart # 234-4012
Denso 234-4012 Oxygen Sensor
4.29 Reviews
$38.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003-2003 Isuzu Rodeo, 2002-2002 Cadillac Escalade, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 GMC Sierra 1500, 2002-2002 Isuzu Rodeo, 2001-2003 Isuzu Rodeo Sport, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Yukon, 2001-2002 GMC Yukon, 2001-2002 GMC Yukon XL 1500, 2001-2001 Chevrolet Blazer, 2001-2001 GMC Sonoma, 2001-2001 Isuzu Rodeo, 2001-2001 Isuzu VehiCROSS, 2000-2002 Chevrolet Suburban 1500, 2000-2002 Chevrolet Tahoe, 2000-2002 GMC Sierra 1500, 2000-2001 Chevrolet S10, 2000-2001 GMC Sierra 1500, 2000-2000 Chevrolet Blazer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
234-4012, 19178918, 19178930, 24626, 21006, 8253252660, 19178937, 96335927,
...View moreitem #1003S56U
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Spectra PremiumPart # OS5044
Spectra Premium OS5044 Oxygen Sensor
4.45 Reviews
$29.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003-2003 Chevrolet Corvette, 2002-2003 Isuzu Rodeo Sport, 2001-2003 Isuzu Rodeo, 2001-2002 Chevrolet G30, 2001-2001 Chevrolet Blazer, 2001-2001 Chevrolet C1500, 2001-2001 GMC Jimmy, 2001-2001 Isuzu Rodeo Sport, 2001-2001 Oldsmobile Bravada, 2000-2001 Chevrolet S10, 2000-2001 GMC Sonoma, 2000-2000 Chevrolet C1500, 2000-2000 GMC Jimmy, 2000-2000 GMC Yukon, 2000-2000 Oldsmobile Bravada, 1999-2002 Chevrolet Corvette, 1999-2002 Chevrolet Express 3500, 1999-2002 Daewoo Lanos, 1999-2002 Daewoo Leganza, 1999-2002 GMC Savana 1500
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Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
OS5044, 751701, 753251, SG278T, SG239T, SG236T, SG278, SG239,
...View moreitem #1000YDE5
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A-Premium®Part # OS168
1999-2002 Daewoo Leganza O2 Oxygen Sensor | 1-Pc Direct-Fit | Heated | A-Premium OS168
4.5684 Reviews
$22.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits Daewoo Leganza: 1999 2000 2001 2002
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Vehicle: Daewoo
Installation PositionCheck the fitment chart
Item LocatedUnited States
ConditionNew
item #1012R7R1
Note
Oxygen Senor - B1S1 Indicates Bank 1 Sensor 1, B1S2 Indicates Bank 1 Sensor 2, B2S1 Indicates Bank 2 Sensor 1, B2S1 Indicates Bank 1 Sensor 2.
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AisinPart # OXSAZ-00288
1999-2002 Daewoo Leganza Upstream or Downstream or Center O2 Oxygen Sensor | 1-Pc Direct-Fit | Aisin OXSAZ-00288
4.5684 Reviews
$43.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits Daewoo Leganza: 1999 2000 2001 2002
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Vehicle: Daewoo
Quantity1
Installation PositionUpstream or Downstream or Center
Item LocatedUnited States
ConditionNew
item #1018GKPU
Show less
DensoPart # 234-4000
Denso 234-4000 Oxygen Sensor
4.29 Reviews
$71.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2004-2004 Buick Rendezvous, 2004-2004 Chevrolet Impala, 2004-2004 Chevrolet Monte Carlo, 2003-2003 Buick LeSabre, 2003-2003 Chevrolet Corvette, 2003-2003 Isuzu Rodeo Sport, 2002-2004 Oldsmobile Alero, 2002-2004 Pontiac Grand Am, 2002-2003 Buick Regal, 2002-2003 Buick Rendezvous, 2002-2003 Chevrolet S10, 2002-2003 GMC Sonoma, 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade EXT, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Cavalier
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
234-4000, 13470, 15503, 15702, 15058, 13111, 13027, 13326,
...View moreitem #1003S484
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Walker ProductsPart # 250-24012
Walker Products 250-24012 Oxygen Sensor
56 Reviews
$65.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2006-2008 Chevrolet Corsa, 2003-2003 Isuzu Rodeo, 2002-2003 Isuzu Rodeo Sport, 2002-2002 Cadillac Escalade, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Express 2500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Suburban 1500, 2002-2002 Isuzu Rodeo, 2001-2002 Chevrolet Express 1500, 2001-2002 Chevrolet Silverado 3500, 2001-2002 Chevrolet Tahoe, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Yukon XL 1500, 2001-2001 Chevrolet Silverado 1500, 2001-2001 Chevrolet Suburban 1500, 2001-2001 GMC Jimmy, 2001-2001 Isuzu Rodeo
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
250-24012
item #1001PCCQ
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BoschPart # 15637
Oxygen Sensor - Bosch 15637
46 Reviews
$97.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002-2002 Cadillac Escalade, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 GMC Yukon, 2002-2002 GMC Yukon XL 1500, 2001-2003 Isuzu Rodeo, 2001-2003 Isuzu Rodeo Sport, 2001-2002 Chevrolet Tahoe, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Yukon, 2001-2001 GMC Yukon, 2001-2001 GMC Yukon XL 1500, 2000-2002 Chevrolet Silverado 1500, 2000-2002 Chevrolet Silverado 1500, 2000-2002 Chevrolet Suburban 1500, 2000-2002 GMC Sierra 1500, 2000-2001 Chevrolet Silverado 1500, 2000-2000 Chevrolet Silverado 2500
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Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
15637, 96335928
item #1002DXZ6
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BoschPart # 15703
Bosch 15703 Oxygen Sensor
46 Reviews
$47.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003-2003 Isuzu Axiom, 2002-2003 Isuzu Rodeo, 2002-2002 Isuzu Axiom, 2001-2003 Isuzu Rodeo Sport, 2001-2001 Chevrolet S10, 2001-2001 GMC Sonoma, 2001-2001 Isuzu Rodeo Sport, 2000-2002 Chevrolet Express 2500, 2000-2002 Daewoo Lanos, 2000-2002 GMC Savana 3500, 2000-2000 Chevrolet S10, 2000-2000 GMC Sonoma, 2000-2000 Isuzu Hombre, 1999-2002 Daewoo Leganza, 1999-2001 Isuzu VehiCROSS, 1999-2000 Cadillac Escalade, 1999-2000 Isuzu Amigo, 1999-2000 Isuzu Amigo, 1999-1999 Chevrolet C1500 Suburban, 1999-1999 Chevrolet Express 2500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
15703, 29004H0030, 8191789180, 19178918, 19178930, 19178937, 96335927, 8972240110,
...View moreitem #1002DUC9
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BoschPart # 15732
Bosch 15732 Oxygen Sensor
46 Reviews
$62.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2004-2004 Buick Rendezvous, 2004-2004 Subaru Impreza, 2004-2004 Subaru Impreza, 2004-2004 Subaru Impreza, 2002-2004 Oldsmobile Alero, 2002-2004 Pontiac Grand Am, 2002-2003 Buick Rendezvous, 2002-2003 Isuzu Axiom, 2002-2003 Isuzu Rodeo, 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade, 2002-2002 Cadillac Escalade EXT, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Camaro, 2002-2002 Chevrolet Cavalier, 2002-2002 Chevrolet Monte Carlo, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 GMC Yukon
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Vehicle: Daewoo
QuantityOne Set
Item LocatedUnited States
Part interchange
15732
item #1002DYTL
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Walker ProductsPart # 250-22001
Walker Products 250-22001 Oxygen Sensor
56 Reviews
$47.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1999-2002 Daewoo Lanos, 1999-2002 Daewoo Leganza, 1999-2002 Daewoo Nubira, 1994-1995 Cadillac DeVille, 1993-1993 Cadillac 60 Special, 1993-1993 Cadillac Eldorado, 1993-1993 Cadillac Seville, 1992-1993 Cadillac Commercial Chassis, 1991-1992 Cadillac Eldorado, 1991-1992 Cadillac Seville, 1988-1993 Cadillac DeVille, 1988-1992 Cadillac Fleetwood, 1988-1991 Cadillac Commercial Chassis, 1988-1990 Cadillac Seville, 1987-1992 Cadillac Allante, 1987-1990 Cadillac Eldorado, 1987-1987 Cadillac Fleetwood, 1986-1986 Cadillac Fleetwood, 1983-1984 Cadillac DeVille, 1983-1984 Cadillac Eldorado
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
250-22001
item #1001P8L1
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DensoPart # 234-2000
Denso 234-2000 Oxygen Sensor
4.29 Reviews
$49.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2002-2002 Chevrolet Cavalier, 2002-2002 Pontiac Sunfire, 2001-2001 Saturn L100, 2001-2001 Saturn L200, 2001-2001 Saturn LW200, 2000-2003 Chevrolet S10, 2000-2003 GMC Sonoma, 2000-2001 Chevrolet Cavalier, 2000-2001 Oldsmobile Alero, 2000-2001 Pontiac Grand Am, 2000-2001 Pontiac Sunfire, 2000-2000 Saturn LS, 2000-2000 Saturn LS1, 2000-2000 Saturn LW1, 1999-2002 Daewoo Lanos, 1999-2002 Daewoo Leganza, 1999-2002 Daewoo Nubira, 1998-2000 Chevrolet Camaro, 1998-2000 Pontiac Firebird, 1998-1999 Toyota Celica
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Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
234-2000, 12043, 12019, 12023, 12041, 13928, 12109, 12053,
...View moreitem #1002HRLR
Show less
Walker ProductsPart # 250-24406
Walker Products 250-24406 Oxygen Sensor, Downstream
56 Reviews
$80.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1999-2002 Daewoo Nubira
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Installation PositionDownstream
Item LocatedUnited States
Part interchange
250-24406
item #1001PAL2
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Walker ProductsPart # 350-34348
Walker Products 350-34348 Oxygen Sensor, Downstream
56 Reviews
$66.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1999-2002 Daewoo Nubira
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Installation PositionDownstream
Item LocatedUnited States
Part interchange
350-34348
item #1001PH3P
Show less
Walker ProductsPart # 350-32013
Walker Products 350-32013 Oxygen Sensor
56 Reviews
$30.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1999-2002 Daewoo Lanos, 1999-2002 Daewoo Leganza, 1999-2002 Daewoo Nubira, 1995-1995 Cadillac DeVille, 1994-1994 Cadillac DeVille, 1993-1993 Cadillac 60 Special, 1993-1993 Cadillac Eldorado, 1993-1993 Cadillac Seville, 1992-1993 Cadillac Commercial Chassis, 1992-1992 Cadillac Seville, 1991-1992 Cadillac Eldorado, 1991-1991 Cadillac Seville, 1988-1993 Cadillac DeVille, 1988-1992 Cadillac Fleetwood, 1988-1991 Cadillac Commercial Chassis, 1988-1990 Cadillac Seville, 1987-1992 Cadillac Allante, 1987-1990 Cadillac Eldorado, 1987-1987 Cadillac Fleetwood, 1986-1986 Cadillac Fleetwood
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
350-32013
item #1001P9T8
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BoschPart # 12028
Oxygen Sensor - Upstream - Bosch 12028
46 Reviews
$50.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2000-2002 Daewoo Lanos, 1999-2002 Daewoo Leganza, 1999-2002 Daewoo Nubira, 1999-1999 Daewoo Lanos, 1999-1999 Daewoo Lanos, 1994-1995 Cadillac DeVille, 1993-1993 Cadillac 60 Special, 1993-1993 Cadillac Eldorado, 1993-1993 Cadillac Seville, 1992-1993 Cadillac Commercial Chassis, 1988-1993 Cadillac DeVille, 1988-1992 Cadillac Fleetwood, 1988-1992 Cadillac Seville, 1988-1991 Cadillac Commercial Chassis, 1987-1992 Cadillac Allante, 1987-1992 Cadillac Eldorado, 1982-1984 Cadillac DeVille, 1982-1984 Cadillac Eldorado, 1982-1984 Cadillac Fleetwood, 1982-1984 Cadillac Seville
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Installation PositionUpstream
Item LocatedUnited States
Part interchange
12028, 19211435, 96377500, 3240083
item #1002C6VX
Show less
Walker ProductsPart # 350-34128
Walker Products 350-34128 Oxygen Sensor
56 Reviews
$38.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2008 Chevrolet Corsa, 2006-2006 Chevrolet Corsa, 2003-2003 Isuzu Rodeo, 2002-2003 Isuzu Rodeo Sport, 2002-2002 Cadillac Escalade, 2002-2002 Chevrolet Avalanche 1500, 2002-2002 Chevrolet Express 2500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Silverado 1500, 2002-2002 Chevrolet Silverado 2500, 2002-2002 Chevrolet Sonora, 2002-2002 GMC Savana 2500, 2002-2002 GMC Sierra 1500, 2002-2002 GMC Sierra 1500, 2002-2002 GMC Sierra 1500, 2002-2002 GMC Yukon, 2002-2002 GMC Yukon, 2002-2002 Isuzu Rodeo, 2001-2002 Chevrolet Express 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Item LocatedUnited States
Part interchange
350-34128
item #1001P96G
Show less
DelphiPart # ES20023
Oxygen Sensor - Front Side - Delphi ES20023
4.648 Reviews
$56.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2003-2003 Isuzu Rodeo, 2003-2003 Isuzu Rodeo Sport, 2002-2002 Isuzu Rodeo, 2001-2002 Isuzu Rodeo Sport, 2001-2001 Isuzu Rodeo, 1999-2002 Daewoo Lanos, 1999-2002 Daewoo Leganza, 1999-2001 Isuzu VehiCROSS, 1999-2000 Isuzu Hombre, 1999-1999 Isuzu Rodeo, 1999-1999 Isuzu Rodeo, 1998-2000 Isuzu Amigo, 1998-2000 Isuzu Rodeo, 1998-1998 Isuzu Hombre, 1997-1997 Isuzu Hombre, 1997-1997 Isuzu Rodeo, 1997-1997 Isuzu Rodeo, 1996-2000 Honda Passport, 1996-1999 Acura SLX, 1996-1999 Isuzu Trooper
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Daewoo
Quantity1
Installation PositionFront
Item LocatedUnited States
Part interchange
ES20023, SU5704, SU187, 2131325, AFS105, 250-24012, 2-9004H-003-0, 8-25163-079-0,
...View moreitem #1001XCH9
Show less
Your vehicle’s oxygen sensor (also known as O2 sensors) plays a critical role in engine performance, fuel efficiency, and emissions control. By continuously measuring the amount of unburned oxygen in the exhaust, the oxygen sensor sends real-time feedback to your engine control unit (ECU), ensuring the perfect air-fuel mixture.
When an oxygen sensor fails, your engine essentially runs “blind,” leading to poor fuel economy, rough idling, reduced performance, and a persistent check engine light. A timely front oxygen sensor replacement or replacement of a faulty upstream oxygen sensor or downstream oxygen sensor can restore optimal driving conditions and help you pass emissions tests with ease.
Why Choose A-Premium Oxygen Sensors?
Unlike universal parts that require cutting and splicing wires, A-Premium O2 sensors are engineered for direct plug-and-play installation.
- OEM-style connectors for seamless fit
- Pre-coated anti-seize threads for easy installation
- Laser-welded body construction for durability
- High-temperature sintered coating for long service life
- Premium insulation sheathing and impact-resistant design
- Slotted guard tube for sensor protection
- High heat dissipation structure for extreme environments
Advanced Performance & Precision
A-Premium oxygen sensor technology ensures fast, accurate, and stable performance:
Performance & Response
- ≤200ms fast response time
- High-efficiency oxygen sensing
- Zirconia sensing element
- Real-time signal feedback
Precision & Control
- Real-time exhaust tracking
- Accurate combustion control
- Stable signal output
Efficiency & Engine Benefits
- Improved fuel efficiency
- Enhanced engine performance
- Reduced harmful emissions
- Extended engine lifespan
Environmental Adaptability
- Operating range: -40°F to 266°F
- Air-tight sealing design
- Stable performance under harsh conditions
3 Symptoms of a Bad Oxygen Sensor
Because O2 sensors operate in extreme heat and carbon-rich environments, they naturally degrade over time.
- Check Engine Light (CEL): Common codes include P0135, P0171, and P0420. These often point to issues with an upstream oxygen sensor or oxygen sensor bank 1.
- Poor Fuel Economy: A faulty oxygen sensor may cause a rich fuel mixture, dramatically lowering MPG. 20-40% worse fuel economy overnight.
- Rough Idle & Stalling: Incorrect readings from your downstream oxygen sensor or upstream sensor can disrupt engine stability.
- Rotten egg smell: Catalytic converter overheating from bad fuel mixture
Understanding O2 Sensor Positions: Upstream vs Downstream
Modern vehicles may have multiple oxygen sensor units, making it essential to identify the correct one:
- Oxygen Sensor Bank 1vs Bank 2
- oxygen sensor bank 1 refers to the side of the engine with Cylinder #1
- Bank 2 is the opposite side
- Upstream Oxygen Sensor(Sensor 1)
- Located before the catalytic converter
- Controls air-fuel ratio
- Most common need for front oxygen sensor replacement
- Downstream Oxygen Sensor(Sensor 2)
- Located after the catalytic converter
- Monitors emissions system efficiency
Tip: Always match your diagnostic code to the correct upstream oxygen sensor or downstream oxygen sensor before purchasing.
Complete Your Emissions Repair
Replacing your oxygen sensor is often part of a larger emissions system fix. Consider inspecting these related components:
- Catalytic Converter: Persistent issues after replacing a downstream oxygen sensor may indicate converter failure
- MAF Sensor: Works with your oxygen sensor to calculate air intake
- Ignition Coils & Spark Plugs: Misfires can damage O2 sensors quickly
Shop by Popular Makes
To help you quickly find the right oxygen sensor, explore our most popular vehicle-specific options:
Browse our most searched and best-selling vehicle-specific oxygen sensor options to quickly locate the right fit for your car.
Frequently Asked Questions
Can I clean my oxygen sensor instead of replacing it?
Should I replace O2 sensors in pairs?
Do I need a special tool?
How long do oxygen sensors last?
What’s the difference between upstream and downstream sensors?
What happens if I ignore a bad oxygen sensor?
How do I know if it’s Bank 1 or Bank 2?
Will replacing an oxygen sensor improve MPG?
How do oxygen sensor voltages relate to fuel mixture?
How much does it cost to replace an oxygen sensor?
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P0139 Code: Bank 1 Sensor 2 Slow Response & Fixes
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