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Oxygen Sensor - 4-Wire, Heated
Part Number: REPB960901
0 Reviews
Vehicle Info Required to Guarantee Fit
$24.99
Vehicle Fitment
  • 2005 - 2006 Buick Terraza CX 6 Cyl 3.5L
  • 2005 - 2006 Buick Terraza CXL 6 Cyl 3.5L
  • 2006 - 2007 Buick Rendezvous CX 6 Cyl 3.5L
  • 2006 - 2007 Buick Rendezvous CXL 6 Cyl 3.5L
  • 2006 - 2007 Buick Terraza CX 6 Cyl 3.9L
  • 2006 - 2007 Buick Terraza CXL 6 Cyl 3.9L
  • 2006 - 2009 Buick LaCrosse CX 6 Cyl 3.8L
  • 2006 - 2009 Buick LaCrosse CXL 6 Cyl 3.8L
  • 2007 - 2008 Buick Lucerne CX 6 Cyl 3.8L
  • 2007 - 2008 Buick Lucerne CXL 6 Cyl 3.8L
  • 2009 - 2011 Buick Lucerne CX 6 Cyl 3.9L
  • 2009 - 2011 Buick Lucerne CXL 6 Cyl 3.9L
  • 2010 Buick Lucerne CXL Special Edition 6 Cyl 3.9L Engine Designation: LGD, Engine VIN: M, FI, Naturally Aspirated, FLEX, Engine VIN: 1, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 16.5 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024470, 2344209, 21006Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - 4-Wire, Heated
Part Number: REPB960901
0 Reviews
Vehicle Info Required to Guarantee Fit
$24.99
Vehicle Fitment
  • 2005 Buick Rainier CXL Plus 8 Cyl 5.3L Engine VIN: M, FI, Naturally Aspirated, GAS
  • 2005 Buick Rainier CXL 8 Cyl 5.3L Engine VIN: M, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic Converter, Driver Or Passenger SideType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 16.5 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024470, 2344209, 21006Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - 4-Wire, Heated
Part Number: REPB960901
0 Reviews
Vehicle Info Required to Guarantee Fit
$24.99
Vehicle Fitment
  • 2005 Buick LaCrosse CX 6 Cyl 3.8L Engine VIN: 2, FI, Naturally Aspirated, GAS, California-ESV
  • 2005 Buick LaCrosse CXL 6 Cyl 3.8L Engine VIN: 2, FI, Naturally Aspirated, GAS, California-ESV
  • 2008 Buick Enclave CX 6 Cyl 3.6L Engine VIN: 7, FI, Naturally Aspirated, GAS
  • 2008 Buick Enclave CXL 6 Cyl 3.6L Engine VIN: 7, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic Converter, Front Or RearType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 16.5 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024470, 2344209, 21006Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - Set of 2
Part Number: SET-REPB960901-2
0 Reviews
Vehicle Info Required to Guarantee Fit
$47.49
Vehicle Fitment
  • 2005 Buick Rainier CXL Plus 8 Cyl 5.3L Engine VIN: M, FI, Naturally Aspirated, GAS
  • 2005 Buick Rainier CXL 8 Cyl 5.3L Engine VIN: M, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic Converter, Driver And Passenger SideComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 16.5 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024470, 2344209, 21006Connector Gender : Male ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - Sold individually
Part Number: REPC960915
0 Reviews
Vehicle Info Required to Guarantee Fit
$28.99
Vehicle Fitment
  • 2004 - 2005 Buick Rainier CXL Plus 8 Cyl 5.3L
  • 2004 - 2005 Buick Rainier CXL 8 Cyl 5.3L
Product Details
Location : After Catalytic Converter, Driver Or Passenger SideType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 13.8 in. wire lengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024836, 15895Connector Gender : Female ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - Sold individually
Part Number: REPC960915
0 Reviews
Vehicle Info Required to Guarantee Fit
$28.99
Vehicle Fitment
  • 2004 Buick Regal GS 6 Cyl 3.8L Engine VIN: 1, FI, Supercharged, GAS, Engine VIN: K, FI, Naturally Aspirated, GAS
  • 2004 Buick Regal LS 6 Cyl 3.8L Engine VIN: 1, FI, Supercharged, GAS, Engine VIN: K, FI, Naturally Aspirated, GAS
  • 2004 - 2005 Buick LeSabre Custom 6 Cyl 3.8L
  • 2004 - 2005 Buick LeSabre Limited 6 Cyl 3.8L
  • 2004 - 2005 Buick Park Avenue Base 6 Cyl 3.8L
  • 2004 - 2005 Buick Park Avenue Ultra 6 Cyl 3.8L
  • 2005 Buick Century Custom 6 Cyl 3.1L Engine VIN: J, FI, Naturally Aspirated, GAS
  • 2005 Buick Century Limited 6 Cyl 3.1L Engine VIN: J, FI, Naturally Aspirated, GAS
  • 2005 Buick Century Special Edition 6 Cyl 3.1L Engine VIN: J, FI, Naturally Aspirated, GAS
  • 2005 - 2006 Buick Terraza CX 6 Cyl 3.5L
  • 2005 - 2006 Buick Terraza CXL 6 Cyl 3.5L
  • 2005 - 2007 Buick LaCrosse CX 6 Cyl 3.8L
  • 2005 - 2007 Buick LaCrosse CXL 6 Cyl 3.8L
  • 2006 - 2007 Buick Rendezvous CX 6 Cyl 3.5L
  • 2006 - 2007 Buick Rendezvous CXL 6 Cyl 3.5L
  • 2006 - 2007 Buick Terraza CX 6 Cyl 3.9L
  • 2006 - 2007 Buick Terraza CXL 6 Cyl 3.9L
  • 2006 - 2008 Buick Lucerne CX 6 Cyl 3.8L
  • 2006 - 2008 Buick Lucerne CXL 6 Cyl 3.8L
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 13.8 in. wire lengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024836, 15895Connector Gender : Female ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - Sold individually
Part Number: REPG960907
0 Reviews
Vehicle Info Required to Guarantee Fit
$26.99
Vehicle Fitment
  • 2008 Buick Enclave CX 6 Cyl 3.6L Engine VIN: 7, FI, Naturally Aspirated, GAS
  • 2008 Buick Enclave CXL 6 Cyl 3.6L Engine VIN: 7, FI, Naturally Aspirated, GAS
Product Details
Location : After Catalytic Converter, Front Or RearType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 15.7 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024708Connector Gender : Female ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - Sold individually
Part Number: REPG960907
0 Reviews
Vehicle Info Required to Guarantee Fit
$26.99
Vehicle Fitment
  • 2007 Buick Rainier CXL 6 Cyl 4.2L Engine VIN: S, FI, Naturally Aspirated, GAS
  • 2009 - 2011 Buick Lucerne CX 6 Cyl 3.9L
  • 2009 - 2011 Buick Lucerne CXL 6 Cyl 3.9L
  • 2010 Buick LaCrosse CX 4 Cyl 2.4L Engine Designation: LAF, Engine VIN: C, FI, Naturally Aspirated, GAS
  • 2010 Buick Lucerne CXL Special Edition 6 Cyl 3.9L Engine Designation: LGD, Engine VIN: M, FI, Naturally Aspirated, FLEX, Engine VIN: 1, FI, Naturally Aspirated, GAS
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitWire Length : 15.7 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024708Connector Gender : Female ConnectorWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - Set of 2
Part Number: SET-REPC960915--2
0 Reviews
Vehicle Info Required to Guarantee Fit
$51.49
Vehicle Fitment
  • 2005 Buick Rainier CXL Plus 8 Cyl 5.3L Engine VIN: M, FI, Naturally Aspirated, GAS
  • 2005 Buick Rainier CXL 8 Cyl 5.3L Engine VIN: M, FI, Naturally Aspirated, GAS
Product Details
Location : Before And After Catalytic Converter, Driver Or Passenger SideComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024470, 2344209, 21006, 25024836, 15895Warranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - Set of 2
Part Number: SET-REPC960915--2
0 Reviews
Vehicle Info Required to Guarantee Fit
$51.49
Vehicle Fitment
  • 2005 - 2006 Buick Terraza CX 6 Cyl 3.5L
  • 2005 - 2006 Buick Terraza CXL 6 Cyl 3.5L
  • 2005 - 2007 Buick LaCrosse CX 6 Cyl 3.8L
  • 2005 - 2007 Buick LaCrosse CXL 6 Cyl 3.8L
  • 2006 - 2007 Buick Rendezvous CX 6 Cyl 3.5L
  • 2006 - 2007 Buick Rendezvous CXL 6 Cyl 3.5L
  • 2006 - 2007 Buick Terraza CX 6 Cyl 3.9L
  • 2006 - 2007 Buick Terraza CXL 6 Cyl 3.9L
  • 2007 - 2008 Buick Lucerne CX 6 Cyl 3.8L
  • 2007 - 2008 Buick Lucerne CXL 6 Cyl 3.8L
Product Details
Location : Before And After Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024470, 2344209, 21006, 25024836, 15895Warranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - Set of 4
Part Number: SET-REPG960907-4
0 Reviews
Vehicle Info Required to Guarantee Fit
$98.99
Vehicle Fitment
  • 2009 - 2011 Buick Lucerne CX 6 Cyl 3.9L
  • 2009 - 2011 Buick Lucerne CXL 6 Cyl 3.9L
  • 2010 Buick Lucerne CXL Special Edition 6 Cyl 3.9L Engine Designation: LGD, Engine VIN: M, FI, Naturally Aspirated, FLEX, Engine VIN: 1, FI, Naturally Aspirated, GAS
Product Details
Location : Before And After Catalytic ConverterComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Recommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024470, 2344209, 21006, 25024708Warranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - Set of 4
Part Number: SET-REPG960907-4
0 Reviews
Vehicle Info Required to Guarantee Fit
$98.99
Vehicle Fitment
  • 2008 Buick Enclave CX 6 Cyl 3.6L Engine VIN: 7, FI, Naturally Aspirated, GAS
  • 2008 Buick Enclave CXL 6 Cyl 3.6L Engine VIN: 7, FI, Naturally Aspirated, GAS
Product Details
Location : Before And After Catalytic Converter, Front And RearComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Recommended Use : OE ReplacementProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024470, 2344209, 21006, 25024708Warranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - 4-Wire, Heated
Part Number: USOS-4000
0 Reviews
Vehicle Info Required to Guarantee Fit
$22.99
Vehicle Fitment
  • 2013 Buick Enclave Base 6 Cyl 3.6L
  • 2013 Buick LaCrosse Touring 6 Cyl 3.6L
  • 2013 - 2015 Buick LaCrosse Base 6 Cyl 3.6L
  • 2013 - 2015 Buick LaCrosse Leather 6 Cyl 3.6L
  • 2013 - 2015 Buick LaCrosse Premium 6 Cyl 3.6L
  • 2014 - 2016 Buick Enclave Convenience 6 Cyl 3.6L
  • 2014 - 2016 Buick Enclave Leather 6 Cyl 3.6L
  • 2014 - 2016 Buick Enclave Premium 6 Cyl 3.6L
  • 2015 Buick Encore Base 4 Cyl 1.4L
  • 2015 Buick Encore Convenience 4 Cyl 1.4L
  • 2015 Buick Encore Leather 4 Cyl 1.4L
  • 2015 Buick Encore Premium 4 Cyl 1.4L
Product Details
Location : Downstream Or UpstreamNotes : Heated; Designed to fit screw-in type bungs; May not fit with flanges; Includes Butt type connectors, without plugType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleInterchange Part Number : 15733, SG300Warranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - 4-Wire, Heated
Part Number: USOS-4000
0 Reviews
Vehicle Info Required to Guarantee Fit
$22.99
Vehicle Fitment
  • 2014 Buick Encore Base 4 Cyl 1.4L
  • 2014 Buick Encore Convenience 4 Cyl 1.4L
  • 2014 Buick Encore Leather 4 Cyl 1.4L
  • 2014 Buick Encore Premium 4 Cyl 1.4L
Product Details
Location : DownstreamNotes : Heated; Designed to fit screw-in type bungs; May not fit with flanges; Includes Butt type connectors, without plugType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleInterchange Part Number : 15733, SG300Warranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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.

Oxygen Sensor - 4-Wire, Heated
Part Number: USOS-4000
0 Reviews
Vehicle Info Required to Guarantee Fit
$22.99
Vehicle Fitment
  • 2013 - 2016 Buick Encore Convenience 4 Cyl 1.4L
  • 2013 - 2016 Buick Encore Leather 4 Cyl 1.4L
  • 2013 - 2018 Buick Encore Premium 4 Cyl 1.4L
  • 2013 - 2019 Buick Encore Base 4 Cyl 1.4L
  • 2015 - 2017 Buick Enclave Convenience 6 Cyl 3.6L
  • 2015 - 2017 Buick Enclave Leather 6 Cyl 3.6L
  • 2015 - 2017 Buick Enclave Premium 6 Cyl 3.6L
  • 2016 Buick LaCrosse Base 6 Cyl 3.6L
  • 2016 Buick LaCrosse Leather 6 Cyl 3.6L
  • 2016 Buick LaCrosse Premium 6 Cyl 3.6L
  • 2016 Buick LaCrosse Sport Touring 6 Cyl 3.6L
  • 2016 - 2019 Buick Encore Sport Touring 4 Cyl 1.4L
  • 2017 - 2018 Buick Encore Preferred II 4 Cyl 1.4L
  • 2017 - 2019 Buick Encore Essence 4 Cyl 1.4L
  • 2017 - 2019 Buick Encore Preferred 4 Cyl 1.4L
Product Details
Location : Upstream Or DownstreamNotes : Heated; Designed to fit screw-in type bungs; May not fit with flanges; Includes Butt type connectors, without plugType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleInterchange Part Number : 15733, SG300Warranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, 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 34 | Showing 1 - 15 of 503 results

Buick Oxygen Sensor Customer Reviews

I usually purchase my parts from here because the price is good and I get it fast! Thanks,
Allen Arjang
VERIFIED PURCHASER
Purchased on Mar 11, 2021
Was a perfect fit everything worked as it should
Richard Wiebelhaus
VERIFIED PURCHASER
Purchased on Feb 21, 2021
Exactly as described and perfect fit. Works great
Tom Elkins
VERIFIED PURCHASER
Purchased on Feb 23, 2021

Buick Oxygen Sensor Guides

The Buick oxygen sensor is a very small component that helps to regulate the fuel and air mixture that is necessary to the engine for the combustion process. The engine needs a precise balance of both fuel and air to function at its best, burning the fuel cleanly to produce the most efficient power and performance. The Buick oxygen sensor is most often found in the exhaust pipe, where it is used to detect the amount of oxygen left in the exhaust emissions after engine combustion, to determine whether the fuel has burned as efficiently as it should. The Buick oxygen sensor sends its information to the vehicle computer, transmitting the level of oxygen present in the exhaust using a voltage signal that is produced by a chemical reaction within the sensor. The vehicle computer uses this signal to determine the adjustment necessary in the fuel and air mixture, and change it accordingly. This constant process of monitoring by the Buick oxygen sensor and adjusting the fuel air ratio is made necessary by the ever-changing level of oxygen concentration in the air. The level of oxygen changes due to many factors, such as temperature, elevation and the load placed on the engine. If the Buick oxygen sensor is unable to perform its function, sending no signal to the vehicle computer, it will usually default to a rich mixture of fuel and air, which can cause performance problems and poor fuel economy. Our online catalog features a selection of quality Buick oxygen sensor replacements at very reasonable prices. Ordering your Buick oxygen sensor is always safe and easy on our secure site, or our toll-free phone line is just as convenient.

Helpful Automotive Resources

P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3Diagnostic trouble code (DTC) P0042 stands for “HO2S Heater Control Circuit Bank 1 Sensor 3.” It is logged when the powertrain control module (PCM) detects a possible issue with the heater circuit for the third oxygen sensor downstream from the engine on bank 1.
P0170 Code: Fuel Trim (Bank 1)
P0170 Code: Fuel Trim (Bank 1)Diagnostic Trouble Code (DTC) P0170 stands for “Fuel Trim Malfunction (Bank 1).” Fuel trim is the adjustment made by the PCM to the engine’s air-fuel mixture. The P0170 code indicates that the fuel trims have reached an abnormally low or abnormally high value for a specified amount of time.
P2187 Code: System too Lean at Idle (Bank 1)
P2187 Code: System too Lean at Idle (Bank 1)Diagnostic trouble code (DTC) P2187 stands for “System Too Lean at Idle (Bank 1).” It indicates that your vehicle’s computer has detected a potential issue with the fuel mixture at idle. 
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