{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": true,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": true,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": true,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": true,
    "zipPaymentFlag": "c",
    "hassleFreeReturn": true,
    "lifetimeReplacement": true,
    "cpn_off": false
}
2007 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.
Refine by:
See All
See All

Shop Catalog

Showing 1 - 15 of 59 results
Display item:
15
30
45
Sort by:
After Catalytic Converter Oxygen Sensor, Sold Individualy, 4-Wire, 6 Cylinder, 3.0L/4.0L Engine
Part Number: REPF960904
Guaranteed to Fit
$19.99
Vehicle Fitment
  • 2007 Ford Ranger STX 6 Cyl 4.0L
  • 2007 Ford Ranger Sport 6 Cyl 3.0L
  • 2007 Ford Ranger XLT 6 Cyl 3.0L
  • 2007 Ford Ranger STX 6 Cyl 3.0L
  • 2007 Ford Ranger XL 6 Cyl 3.0L
  • 2007 Ford Ranger XL 6 Cyl 4.0L
  • 2007 Ford Ranger FX4 6 Cyl 4.0L
  • 2007 Ford Ranger Sport 6 Cyl 4.0L
  • 2007 Ford Ranger XLT 6 Cyl 4.0L
Product Details
Location : After 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
After Catalytic Converter Oxygen Sensors, 4-wire, 6 Cyl., 3.0/4.0L Engines
Part Number: SET-REPF960904-2
Guaranteed to Fit
$38.99
Vehicle Fitment
  • 2007 Ford Ranger STX 6 Cyl 4.0L
  • 2007 Ford Ranger Sport 6 Cyl 3.0L
  • 2007 Ford Ranger XLT 6 Cyl 3.0L
  • 2007 Ford Ranger STX 6 Cyl 3.0L
  • 2007 Ford Ranger XL 6 Cyl 3.0L
  • 2007 Ford Ranger XL 6 Cyl 4.0L
  • 2007 Ford Ranger FX4 6 Cyl 4.0L
  • 2007 Ford Ranger Sport 6 Cyl 4.0L
  • 2007 Ford Ranger XLT 6 Cyl 4.0L
Product Details
Location : After 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
Before or After Catalytic Converter, Driver or Passenger Side Oxygen Sensor, 4-Wire, Heated
Part Number: REPF960902
Guaranteed to Fit
$27.99
Vehicle Fitment
  • 2007 Ford Ranger XLT 6 Cyl 4.0L
  • 2007 Ford Ranger STX 6 Cyl 4.0L
  • 2007 Ford Ranger STX 6 Cyl 3.0L
  • 2007 Ford Ranger Sport 6 Cyl 3.0L
  • 2007 Ford Ranger XL 6 Cyl 4.0L
  • 2007 Ford Ranger XLT 6 Cyl 3.0L
  • 2007 Ford Ranger FX4 6 Cyl 4.0L
  • 2007 Ford Ranger XL 6 Cyl 3.0L
  • 2007 Ford Ranger Sport 6 Cyl 4.0L
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024701Connector 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 Sensor, 2.3L Engine, Set of 2
Part Number: SET-REPF960902-2
Guaranteed to Fit
$52.99
Vehicle Fitment
  • 2007 Ford Ranger XLT 4 Cyl 2.3L
  • 2007 Ford Ranger XL 4 Cyl 2.3L
  • 2007 Ford Ranger STX 4 Cyl 2.3L
Product Details
Location : Before Catalytic ConverterComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024701Connector 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 and After Catalytic Converter Oxygen Sensor, Set of 4 4-wire
Part Number: SET-REPF960902-4
Guaranteed to Fit
$106.49
Vehicle Fitment
  • 2007 Ford Ranger XLT 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger STX 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger STX 6 Cyl 3.0L enginevinnname: U, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger Sport 6 Cyl 3.0L enginevinnname: U, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger XL 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger XLT 6 Cyl 3.0L enginevinnname: U, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger FX4 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger XL 6 Cyl 3.0L enginevinnname: U, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger Sport 6 Cyl 4.0L enginevinnname: E, FI, Naturally Aspirated, GAS
Product Details
Location : Before And After Catalytic ConverterComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Product Fit : Direct FitThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024701Connector 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
  • 2007 Ford Ranger XLT 4 Cyl 2.3L B1S2
  • 2007 Ford Ranger XL 4 Cyl 2.3L B1S2
  • 2007 Ford Ranger STX 4 Cyl 2.3L B1S2
Product Details
Location : After 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
Before or After Catalytic Converter, Driver or Passenger Side Oxygen Sensor, 4-Wire, Heated
Part Number: RF96090005
Guaranteed to Fit
$19.54
Vehicle Fitment
  • 2007 Ford Ranger XLT 6 Cyl 4.0L
  • 2007 Ford Ranger STX 6 Cyl 4.0L
  • 2007 Ford Ranger STX 6 Cyl 3.0L
  • 2007 Ford Ranger Sport 6 Cyl 3.0L
  • 2007 Ford Ranger XL 6 Cyl 4.0L
  • 2007 Ford Ranger XLT 6 Cyl 3.0L
  • 2007 Ford Ranger FX4 6 Cyl 4.0L
  • 2007 Ford Ranger XL 6 Cyl 3.0L
  • 2007 Ford Ranger Sport 6 Cyl 4.0L
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 17.72 in. Wire LengthInterchange Part Number : 25024701Warranty : 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
  • 2007 Ford Ranger XLT 4 Cyl 2.3L Eng. VIN: D, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger XL 4 Cyl 2.3L Eng. VIN: D, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger STX 4 Cyl 2.3L Eng. VIN: D, FI, Naturally Aspirated, GAS
Product Details
Location : After 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
  • 2007 Ford Ranger XLT 4 Cyl 2.3L B1S2
  • 2007 Ford Ranger XL 4 Cyl 2.3L B1S2
  • 2007 Ford Ranger STX 4 Cyl 2.3L B1S2
Product Details
Location : After 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
Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034539
Guaranteed to Fit
$38.49
Vehicle Fitment
  • 2007 Ford Ranger XLT 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger STX 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger STX 6 Cyl 3.0L Eng. VIN: U, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger Sport 6 Cyl 3.0L Eng. VIN: U, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger XL 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger XLT 6 Cyl 3.0L Eng. VIN: U, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger FX4 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger XL 6 Cyl 3.0L Eng. VIN: U, FI, Naturally Aspirated, GAS
  • 2007 Ford Ranger Sport 6 Cyl 4.0L Eng. VIN: E, FI, Naturally Aspirated, GAS
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 17.72 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 Sensor
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP250241127
Guaranteed to Fit
$48.99
Vehicle Fitment
  • 2007 Ford Ranger XLT 4 Cyl 2.3L B1S1
  • 2007 Ford Ranger XL 4 Cyl 2.3L B1S1
  • 2007 Ford Ranger STX 4 Cyl 2.3L B1S1
Product Details
Location : Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 17.72 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 Original Equipment Base Sensor
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15664
Guaranteed to Fit
$48.99
Vehicle Fitment
  • 2007 Ford Ranger XLT 4 Cyl 2.3L Standard Cab Pickup
  • 2007 Ford Ranger XL 4 Cyl 2.3L Extended Cab Pickup
  • 2007 Ford Ranger STX 4 Cyl 2.3L Standard Cab Pickup
Product Details
Location : UpstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.2 in. Wire LengthReplaces OE Number : XL3Z9F472AA, ZZR118861Interchange Part Number : 15718, XL3Z9F472AA, ZZR118861Warranty : 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: NP2344071
Guaranteed to Fit
$34.99
Vehicle Fitment
  • 2007 Ford Ranger STX 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger Sport 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger FX4 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger Sport 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger XLT 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger XLT 4 Cyl 2.3L With 11" Downstream Sensor
  • 2007 Ford Ranger XL 4 Cyl 2.3L With 11" Downstream Sensor
  • 2007 Ford Ranger XLT 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger XL 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger STX 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger XL 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger STX 4 Cyl 2.3L With 11" Downstream Sensor
Product Details
Location : After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : 5W6Z9G444AA, 5W6Z9G444BA, F85Z9G444AB, F85Z9G444BAInterchange Part Number : 15718Warranty : 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: NP2344127
Guaranteed to Fit
$33.99
Vehicle Fitment
  • 2007 Ford Ranger STX 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger Sport 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger XLT 4 Cyl 2.3L With 19" Downstream Sensor
  • 2007 Ford Ranger XLT 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger STX 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger FX4 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger Sport 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger XLT 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger XL 4 Cyl 2.3L With 19" Downstream Sensor
  • 2007 Ford Ranger XL 6 Cyl 3.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger XL 6 Cyl 4.0L O.E. Quality Replacement Sensor
  • 2007 Ford Ranger STX 4 Cyl 2.3L With 19" Downstream Sensor
Product Details
Location : After Catalytic Converter, Passenger SideType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 15718Warranty : 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, Set of 4 4-wire
Part Number: SET-NP2344127
Guaranteed to Fit
$127.99
Vehicle Fitment
  • 2007 Ford Ranger XLT 4 Cyl 2.3L With 11 inc Downstream Sensor, With 19 inc Downstream Sensor
  • 2007 Ford Ranger XL 4 Cyl 2.3L With 11 inc Downstream Sensor, With 19 inc Downstream Sensor
  • 2007 Ford Ranger STX 4 Cyl 2.3L With 11 inc Downstream Sensor, With 19 inc Downstream Sensor
Product Details
Location : Before and After Catalytic ConverterNotes : Set Components - (4) Oxygen SensorType : 4-wireQuantity Sold : Set of 4Product Fit : Direct FitWarranty : 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.

Page 1 of 4 | Showing 1 - 15 of 59 results

Top Rated Products

Fit just right works good
Jeffrey L S.
VERIFIED PURCHASER
Don’t have this car anymore
Chasity C.
VERIFIED PURCHASER
<a href="http://Carparts.com" target="_blank">Carparts.com</a> has always been my firSee More
Howard J.
VERIFIED PURCHASER

Product Questions & Answers

Q:Am I getting all four o2 sensors or just 1?
Drummer
A:BEST ANSWERHi Christopher, thank you for reaching out! This listing is for all four sensors. You can click the link below to order the set before the sale ends. Have a good one! https://www.carparts.com/oxygen-sensor/denso/set-np2344127?can=cpab2020_csqa_20231118 Show less
Andrew B.
 
2 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?