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1993 Ford Ranger

Oxygen Sensors

Some telltale signs that your oxygen sensor is starting to fail include the check engine light coming on, poor fuel economy, and the engine running rough. Get a replacement as soon as you confirm that your oxygen sensor is bad. The great news is that here at CarParts.com, we have an oxygen sensor replacement for every application (upstream, downstream, before/after the catalytic converter, etc.). Choose from our wide range of high-quality O2 sensors manufactured by the most reputable names in the industry.
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Before Catalytic Converter Oxygen Sensor, Sold Individualy, 4-Wire, 4 Cylinder, 2.3L Engine, B1S1
Part Number: REPF960904
Guaranteed to Fit
$19.99
Vehicle Fitment
  • 1993 Ford Ranger XLT 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger XL 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger STX 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger Splash 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger Sport 4 Cyl 2.3L B1S1
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024001Connector 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.

Returns Policy : 30-Day Return Policy
Before Catalytic Converter Oxygen Sensors, 4-wire, 4 Cyl., 2.3L Engine, B1S1
Part Number: SET-REPF960904-2
Guaranteed to Fit
$38.99
Vehicle Fitment
  • 1993 Ford Ranger XLT 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger XL 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger STX 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger Splash 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger Sport 4 Cyl 2.3L B1S1
Product Details
Location : Before Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitWire Length : 15.75 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeConnector 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.

Returns Policy : 30-Day Return Policy
Oxygen Sensor, 4-Wire, Heated
Part Number: REPF960908
Guaranteed to Fit
$18.99
Vehicle Fitment
  • 1993 Ford Ranger XL 6 Cyl 4.0L California-Esv; Non California-Esv
  • 1993 Ford Ranger XLT 6 Cyl 3.0L
  • 1993 Ford Ranger Splash 6 Cyl 3.0L
  • 1993 Ford Ranger Sport 6 Cyl 3.0L
  • 1993 Ford Ranger Splash 6 Cyl 4.0L California-Esv; Non California-Esv
  • 1993 Ford Ranger STX 6 Cyl 3.0L
  • 1993 Ford Ranger XL 6 Cyl 3.0L
  • 1993 Ford Ranger STX 6 Cyl 4.0L California-Esv; Non California-Esv
  • 1993 Ford Ranger Sport 6 Cyl 4.0L California-Esv; Non California-Esv
  • 1993 Ford Ranger XLT 6 Cyl 4.0L California-Esv; Non California-Esv
Product Details
Location : Driver Side - Before Catalytic Converter, Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 18.82 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024127Connector 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.

Returns Policy : 30-Day Return Policy
Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034089
Guaranteed to Fit
$32.49
Vehicle Fitment
  • 1993 Ford Ranger XL 6 Cyl 4.0L Eng. VIN: X, FI, Naturally Aspirated, GAS
  • 1993 Ford Ranger XLT 6 Cyl 3.0L Eng. VIN: U, FI, Naturally Aspirated, GAS
  • 1993 Ford Ranger Splash 6 Cyl 3.0L Eng. VIN: U, FI, Naturally Aspirated, GAS
  • 1993 Ford Ranger Sport 6 Cyl 3.0L Eng. VIN: U, FI, Naturally Aspirated, GAS
  • 1993 Ford Ranger Splash 6 Cyl 4.0L Eng. VIN: X, FI, Naturally Aspirated, GAS
  • 1993 Ford Ranger STX 6 Cyl 3.0L Eng. VIN: U, FI, Naturally Aspirated, GAS
  • 1993 Ford Ranger XL 6 Cyl 3.0L Eng. VIN: U, FI, Naturally Aspirated, GAS
  • 1993 Ford Ranger STX 6 Cyl 4.0L Eng. VIN: X, FI, Naturally Aspirated, GAS
  • 1993 Ford Ranger Sport 6 Cyl 4.0L Eng. VIN: X, FI, Naturally Aspirated, GAS
  • 1993 Ford Ranger XLT 6 Cyl 4.0L Eng. VIN: X, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 19.69 in. Wire LengthWarranty : 90-day Walker Products 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 : Walker Products Aftermarket Base SensorReturns Policy : 30-Day Return Policy
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: 25024127
Guaranteed to Fit
$33.99
Vehicle Fitment
  • 1993 Ford Ranger XL 6 Cyl 4.0L California-Esv; Non California-Esv
  • 1993 Ford Ranger XLT 6 Cyl 3.0L
  • 1993 Ford Ranger Splash 6 Cyl 3.0L
  • 1993 Ford Ranger Sport 6 Cyl 3.0L
  • 1993 Ford Ranger Splash 6 Cyl 4.0L California-Esv; Non California-Esv
  • 1993 Ford Ranger STX 6 Cyl 3.0L
  • 1993 Ford Ranger XL 6 Cyl 3.0L
  • 1993 Ford Ranger STX 6 Cyl 4.0L California-Esv; Non California-Esv
  • 1993 Ford Ranger Sport 6 Cyl 4.0L California-Esv; Non California-Esv
  • 1993 Ford Ranger XLT 6 Cyl 4.0L California-Esv; Non California-Esv
Product Details
Location : Driver Side - Before Catalytic Converter, Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 19.69 in. Wire LengthInterchange Part Number : ARBM960908, 15718Warranty : 90-day Walker Products 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 : Walker Products Original Equipment Base SensorReturns Policy : 30-Day Return Policy
Catalytic Converter Kit, CARB and Federal EPA Standards, 50-state Legal, 6 Cyl., 2.9L/3.0L/4.0L Engines, Direct Fit, includes Oxygen Sensor
Part Number: KIT-083023-149
Guaranteed to Fit
$706.99
Vehicle Fitment
  • 1993 Ford Ranger XL 6 Cyl 4.0L EO# D-193-104
  • 1993 Ford Ranger STX 6 Cyl 4.0L EO# D-193-104
  • 1993 Ford Ranger Splash 6 Cyl 4.0L EO# D-193-104
  • 1993 Ford Ranger STX 6 Cyl 3.0L EO# D-193-104
  • 1993 Ford Ranger Sport 6 Cyl 3.0L EO# D-193-104
  • 1993 Ford Ranger XLT 6 Cyl 3.0L EO# D-193-104
  • 1993 Ford Ranger XL 6 Cyl 3.0L EO# D-193-104
  • 1993 Ford Ranger Sport 6 Cyl 4.0L EO# D-193-104
  • 1993 Ford Ranger XLT 6 Cyl 4.0L EO# D-193-104
  • 1993 Ford Ranger Splash 6 Cyl 3.0L EO# D-193-104
Product Details
Emissions : CARB and Federal EPA Standards, 50-state LegalComponents : (1) Catalytic Converter and (1) Oxygen SensorType : Catalytic ConverterProduct Fit : Direct FitRecommended Use : OE ReplacementQuantity Sold : KitEO Number : D-193-104Gasket Included : With GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : Magnaflow 5 year / 50,000 Mile 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 : 25024127Tube Material : Stainless Steel
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15716
Guaranteed to Fit
$36.49
Vehicle Fitment
  • 1993 Ford Ranger XLT 4 Cyl 2.3L OE manufactured part
  • 1993 Ford Ranger XL 4 Cyl 2.3L OE manufactured part
  • 1993 Ford Ranger STX 4 Cyl 2.3L OE manufactured part
  • 1993 Ford Ranger Splash 4 Cyl 2.3L OE manufactured part
  • 1993 Ford Ranger Sport 4 Cyl 2.3L OE manufactured part
Product Details
Location : UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 11.8 in. Wire LengthInterchange Part Number : 15718Warranty : 1-year Bosch 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.

Promotions : European Vehicle PartsSeries : OE Replacement Series
Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344070
Guaranteed to Fit
$36.49
Vehicle Fitment
  • 1993 Ford Ranger XL 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger XLT 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger Splash 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger Sport 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger Splash 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger STX 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger XL 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger STX 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger Sport 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger XLT 6 Cyl 4.0L O.E. Quality Replacement Sensor
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 15718, 2344609Warranty : 1-year Denso 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.

Oxygen Sensor, Sold individually 4-wire
Part Number: NG22503
Guaranteed to Fit
$38.49
Vehicle Fitment
  • 1993 Ford Ranger XL 6 Cyl 4.0L
  • 1993 Ford Ranger XLT 6 Cyl 3.0L
  • 1993 Ford Ranger Splash 6 Cyl 3.0L
  • 1993 Ford Ranger Sport 6 Cyl 3.0L
  • 1993 Ford Ranger Splash 6 Cyl 4.0L
  • 1993 Ford Ranger STX 6 Cyl 3.0L
  • 1993 Ford Ranger XL 6 Cyl 3.0L
  • 1993 Ford Ranger STX 6 Cyl 4.0L
  • 1993 Ford Ranger Sport 6 Cyl 4.0L
  • 1993 Ford Ranger XLT 6 Cyl 4.0L
Product Details
Location : Before Catalytic ConverterNotes : Heated Sensor TypeType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 22 in. Wire LengthThread Size : 18 mm Thread SizeMounting Style : Threaded-in Mounting StyleInterchange Part Number : 15718Warranty : NGK 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.

Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344610
Guaranteed to Fit
$34.99
Vehicle Fitment
  • 1993 Ford Ranger STX 4 Cyl 2.3L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger Splash 4 Cyl 2.3L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger XLT 4 Cyl 2.3L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger Sport 4 Cyl 2.3L O.E. Quality Replacement Sensor
  • 1993 Ford Ranger XL 4 Cyl 2.3L O.E. Quality Replacement Sensor
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 2344609, ES20104Warranty : 1-year Denso 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.

Oxygen Sensor, Sold individually
Part Number: AC213618
Guaranteed to Fit
$53.99
Vehicle Fitment
  • 1993 Ford Ranger STX 4 Cyl 2.3L
  • 1993 Ford Ranger Splash 4 Cyl 2.3L
  • 1993 Ford Ranger Sport 4 Cyl 2.3L
  • 1993 Ford Ranger XL 4 Cyl 2.3L
  • 1993 Ford Ranger XLT 4 Cyl 2.3L
Product Details
Quantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco 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.

Oxygen Sensor, Sold individually
Part Number: ACB88260001
Guaranteed to Fit
$66.66
Vehicle Fitment
  • 1993 Ford Ranger XLT 4 Cyl 2.3L
  • 1993 Ford Ranger XL 4 Cyl 2.3L
  • 1993 Ford Ranger STX 4 Cyl 2.3L
  • 1993 Ford Ranger Splash 4 Cyl 2.3L
  • 1993 Ford Ranger Sport 4 Cyl 2.3L
Product Details
Location : Before Catalytic ConverterQuantity Sold : Sold individuallyProduct Fit : Direct FitWarranty : Aceon 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.

Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: 25024001
Guaranteed to Fit
$44.99
Vehicle Fitment
  • 1993 Ford Ranger XLT 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger XL 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger STX 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger Splash 4 Cyl 2.3L B1S1
  • 1993 Ford Ranger Sport 4 Cyl 2.3L B1S1
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 in. Wire LengthInterchange Part Number : REPF960904Warranty : 90-day Walker Products 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 : Walker Products Original Equipment Base Sensor
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15719
Guaranteed to Fit
$37.49
Vehicle Fitment
  • 1993 Ford Ranger XL 6 Cyl 4.0L Alternative Fit 1; For Part Number F2Af9F472Ca; F39F9F472Ca
  • 1993 Ford Ranger XLT 6 Cyl 3.0L
  • 1993 Ford Ranger Splash 6 Cyl 3.0L
  • 1993 Ford Ranger Sport 6 Cyl 3.0L
  • 1993 Ford Ranger Splash 6 Cyl 4.0L Alternative Fit 1; For Part Number F2Af9F472Ca; F39F9F472Ca
  • 1993 Ford Ranger STX 6 Cyl 3.0L
  • 1993 Ford Ranger XL 6 Cyl 3.0L
  • 1993 Ford Ranger STX 6 Cyl 4.0L Alternative Fit 1; For Part Number F2Af9F472Ca; F39F9F472Ca
  • 1993 Ford Ranger Sport 6 Cyl 4.0L Alternative Fit 1; For Part Number F2Af9F472Ca; F39F9F472Ca
  • 1993 Ford Ranger XLT 6 Cyl 4.0L Alternative Fit 1; For Part Number F2Af9F472Ca; F39F9F472Ca
Product Details
Location : UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 25.2 in. Wire LengthInterchange Part Number : 15718Warranty : 1-year Bosch 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.

Promotions : European Vehicle PartsSeries : OE Replacement Series
Oxygen Sensor, Sold individually 4-wire
Part Number: DELES20316
Guaranteed to Fit
$40.49
Vehicle Fitment
  • 1993 Ford Ranger XLT 4 Cyl 2.3L With 270mm Overall Length
  • 1993 Ford Ranger XL 4 Cyl 2.3L With 270mm Overall Length
  • 1993 Ford Ranger STX 4 Cyl 2.3L With 270mm Overall Length
  • 1993 Ford Ranger Splash 4 Cyl 2.3L With 270mm Overall Length
  • 1993 Ford Ranger Sport 4 Cyl 2.3L With 270mm Overall Length
Product Details
Type : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 10.63 in. Wire LengthThread Size : 18 x 1.5 mm Thread SizeInterchange Part Number : 15718Warranty : 1-year or 12,000-mile Delphi 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.

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Product Questions & Answers

Q:2002 Ford Escape 2.o 4cyl 15719 Bocsh number for upstream what is down tream number ? Show Less
Richard R.
A:BEST ANSWERHi Rick, thank you for reaching out. The Bosch part number of a direct-fit downstream oxygen sensor for the 2002 Ford Escape with a 2.0-liter engine is 13743. Since we don't have that part, we suggest you get the downstream oxygen sensor from the local auto parts store. You can use this link to continue ordering this part at a discounted price today: https://www.carparts.com/oxygen-sensor/bosch/bs15719?can=CPAP3648_CSQA_20241015 I hope this helps. Happy shopping. Show less
Aldrin P.
 
1 Question, 1 AnswerView all Q&As >
Q:I think i need 3 or 4 O2 sensors for my 2007 ford e250 4.6 engine. Do you have the right ones i need? Show Less
Willie W.
A:BEST ANSWERHi Willie, I'm glad to assist you. You need two upstream and two downstream sensors. The part numbers are SET-F960903 and REPF960904, respectively. Grab our low-price offer and click the two links below to buy these today. Happy shopping! https://www.carparts.com/details/Ford/E-250/DriveWire/Oxygen_Sensor/2007/Base/8_Cyl_4-dot-6L/SET-F960903-2.html?can=CPJE1043_CSQA_20221215 (Upstream sensors, set of 2 pieces already) https://www.carparts.com/details/Ford/E-250/DriveWire/Oxygen_Sensor/2007/Base/8_Cyl_4-dot-6L/REPF960904.html?can=CPJE1043_CSQA_20221215 (Downstream sensor, order 2 pieces) Show less
Jeonino E.
 
5 Questions, 1 AnswerView all Q&As >

Shopping for Oxygen Sensor

Oxygen Sensor Shopping Info

What Is an Oxygen Sensor?

Modern vehicles are equipped with oxygen sensors, which monitor the amount of oxygen in the exhaust pipe. This part works with the engine control module to maintain your vehicle’s performance and keep its emissions in check.

How Much Does an Oxygen Sensor Replacement Cost?

Replacement oxygen sensors cost anywhere from $10 to $600 for the part alone. Factors that affect this part’s pricing include quantity, location, sensor type, and kit inclusions. Labor can cost you an additional $60 to $70, depending on where you live.

Shop for Aftermarket Oxygen Sensors on CarParts.com

Need to get an OE-grade oxygen sensor replacement fast? Here at CarParts.com, you don’t have to wait in line at a brick-and-mortar store just to get the part you need. With just a few clicks, you can get your orders delivered right to your doorstep in as fast as two business days.

Oxygen sensor replacements are typically sold individually, but you can also purchase them in sets of two or in kits that include catalytic converters. They’re also sold in a variety of inlet types and dimensions, so make sure to double-check if you’ve chosen a part with the right specifications.

With all these options and specifications to look out for, shopping for oxygen sensors can seem like an intimidating task. But with our user-friendly website, you can buy the right oxygen sensor in just a few clicks. Our products are manufactured in world-class facilities and have gone through strict tests to ensure their quality. This way, you can rest easy knowing that you’re getting high-quality products at unbeatable prices.

To view oxygen sensors and other compatible parts for your vehicle, use our vehicle selector tool and enter your vehicle’s specific year, make, and model. You can also indicate your preferences using our search filters. Buying oxygen sensors is easy and convenient here at CarParts.com. Shop now!

Helpful Automotive Resources

P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)P0141 is part of a family of codes listed as follows: P0141 – Sensor Heater Circuit Bank 1 Sensor 2 P0161 – Sensor Heater Circuit Bank 2 Sensor 2 P0135 – O2 Sensor Heater Circuit Bank 1 Sensor 1 P0155 – O2 Heater Circuit Bank 2, Sensor 1 Make sure you know bank 1 from
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3When there are only 3 O2 sensors it’s typically because there’s only one catalyst being monitored, and “Bank 1” is the default designation when there’s only one sensor in a category. Diagram showing 3 oxygen sensors | Image Source: Richard McCuistian
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)Due to this, the O2 sensor features an integrated heater circuit to bring it up to operating temperature after a cold start. When this circuit stops functioning properly, it can trigger a P0135. The oxygen sensor monitors your vehicle’s air-to-fuel ratio. What Does the P0135 Code Mean?