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Ram 4500 Oxygen Sensors

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Oxygen Sensor, 4-Wire, Heated, Female Connector, Threaded-In Type
DriveWire
Oxygen Sensor, 4-Wire, Heated, Female Connector, Threaded-In Type
Part Number: ARBJ960903
Vehicle Info Required to Guarantee Fit
$27.99
Product Details
Location : Passenger Side - Before Catalytic Converter, Driver Side - Before Catalytic Converter, Passenger Side - After Catalytic Converter, Passenger Side - Before Or After Catalytic Converter, After Primary Catalytic Converter, Driver Side - Before Or After Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, After Catalytic Converter, Before Or After Catalytic Converter, Driver Side - Before Catalytic Converter, Driver Side, After Catalytic Converter, Driver Side - After Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Driver Side - After Catalytic Converter, Passenger Side - Before Catalytic Converter, Before Primary Catalytic Converter, Passenger Side, After Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Driver Side, Before Catalytic Converter, After Secondary Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Before Or After Secondary Catalytic Converter, Passenger Side - After Catalytic Converter, Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 13.31 in. Wire LengthThread Size : M18-1.5 Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 7/8 in. Hex SizeInterchange Part Number : 25024253Connector 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.

Returns Policy : 30-Day Return Policy
Oxygen Sensor, 4-Wire, Heated
DriveWire
Oxygen Sensor, 4-Wire, Heated
Part Number: RD96090004
Vehicle Info Required to Guarantee Fit
$21.00
Product Details
Location : Before Catalytic Converter, After Secondary Catalytic Converter, Passenger Side - Before Catalytic Converter, After Catalytic Converter, Passenger Side - Before Catalytic Converter, Driver Side - Before Catalytic Converter, Passenger Side - After Catalytic Converter, Before Secondary Catalytic Converter, After Catalytic Converter, Passenger Side - Before Or After Catalytic Converter, Driver Side - Before Or After Catalytic Converter, After Primary Catalytic Converter, Before Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, After Catalytic Converter, Before Or After Catalytic Converter, Driver Side - Before Catalytic Converter, Before Or After Primary Catalytic Converter, Driver Side, After Catalytic Converter, Driver Side - After Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Passenger Side, After Catalytic Converter, Driver Side - Before Catalytic Converter, After Catalytic Converter, After Secondary Catalytic Converter, Before Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Passenger Side - After Catalytic Converter, Before Catalytic Converter, Before Or Aftfer Catalytic Converter, Passenger Side, Before Catalytic Converter, Before Catalytic Converter, After Primary Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.8 in. Wire LengthInterchange Part Number : 25024680Warranty : 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 Sensors, 4-Wire, Heated, Female Connector, Threaded-In Type
DriveWire
Oxygen Sensors, 4-Wire, Heated, Female Connector, Threaded-In Type
Part Number: SET-RD96090004-4
Vehicle Info Required to Guarantee Fit
$60.99
Product Details
Location : Before And After Catalytic Converter, Before And After Catalytic Converter, Driver And Passenger SideType : 4-wireQuantity Sold : Set of 4Product Fit : Direct FitWarranty : 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
350-34039 Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
350-34039 Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034039
Vehicle Info Required to Guarantee Fit
$29.49
Product Details
Location : Driver Side, Before Or After Catalytic Converter, After Primary Catalytic Converter, Before Or After Catalytic Converter, After Catalytic Converter, Driver Side, After Catalytic Converter, Passenger Side, Before Or After Catalytic Converter, Driver Side - After Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Passenger Side - Before Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Driver Side, Before Catalytic Converter, Passenger Side, After Catalytic Converter, Before Primary Catalytic Converter, After Secondary Catalytic Converter, Before Catalytic Converter, Before Or After Secondary Catalytic Converter, Passenger Side, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 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
350-34213 Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
350-34213 Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034213
Vehicle Info Required to Guarantee Fit
$30.49
Product Details
Location : Before Catalytic Converter, After Secondary Catalytic Converter, Passenger Side - Before Catalytic Converter, After Catalytic Converter, Driver Side - Before Catalytic Converter, Passenger Side - After Catalytic Converter, Before Secondary Catalytic Converter, After Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Before Or After Catalytic Converter, After Catalytic Converter, Before Or After Primary Catalytic Converter, Passenger Side, Before Or After Catalytic Converter, Driver Side, After Catalytic Converter, Driver Side - After Catalytic Converter, Before Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Passenger Side, After Catalytic Converter, Driver Side, Before Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Before Catalytic Converter, Before Or Aftfer Catalytic Converter, Passenger Side, Before Catalytic Converter, Before Catalytic Converter, After Primary Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.8 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
250-24680 Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
250-24680 Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: 25024680
Vehicle Info Required to Guarantee Fit
$38.99
Product Details
Location : Before Catalytic Converter, After Secondary Catalytic Converter, Passenger Side - Before Catalytic Converter, After Catalytic Converter, Driver Side - Before Catalytic Converter, Passenger Side - After Catalytic Converter, Passenger Side - Before Catalytic Converter, Passenger Side - Before Or After Catalytic Converter, Before Secondary Catalytic Converter, After Catalytic Converter, Driver Side - Before Or After Catalytic Converter, After Primary Catalytic Converter, Before Catalytic Converter, Before Or After Catalytic Converter, After Catalytic Converter, Driver Side - Before Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Before Or After Primary Catalytic Converter, Driver Side, After Catalytic Converter, Driver Side - After Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Passenger Side, After Catalytic Converter, Driver Side - Before Catalytic Converter, After Catalytic Converter, After Secondary Catalytic Converter, Before Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Passenger Side - After Catalytic Converter, Before Catalytic Converter, Passenger Side, Before Catalytic Converter, Before Or Aftfer Catalytic Converter, Before Catalytic Converter, After Primary Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.8 in. Wire LengthInterchange Part Number : RD96090004Warranty : 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
250-24253 Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
250-24253 Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: 25024253
Vehicle Info Required to Guarantee Fit
$39.49
Product Details
Location : Passenger Side - Before Catalytic Converter, Driver Side - Before Catalytic Converter, Passenger Side - After Catalytic Converter, Passenger Side - Before Or After Catalytic Converter, After Primary Catalytic Converter, Driver Side - Before Or After Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, After Catalytic Converter, Before Or After Catalytic Converter, Driver Side - Before Catalytic Converter, Driver Side, After Catalytic Converter, Driver Side - After Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Passenger Side - Before Catalytic Converter, Passenger Side - After Catalytic Converter, Passenger Side, After Catalytic Converter, Before Primary Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Driver Side, Before Catalytic Converter, After Secondary Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Before Or After Secondary Catalytic Converter, Passenger Side - After Catalytic Converter, Before Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 in. Wire LengthInterchange Part Number : ARBJ960903Warranty : 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
234-4545 Oxygen Sensor, Sold individually 4-wire
Denso®
234-4545 Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344545
Vehicle Info Required to Guarantee Fit
$41.99
Product Details
Location : Before Catalytic Converter, Passenger Side Or After Catalytic Converter, Before Catalytic Converter Or After Catalytic Converter, Passenger Side, After Catalytic Converter, Driver Side, After Catalytic Converter, Passenger Side, Before Catalytic Converter, Passenger Side, Before Catalytic Converter, Before Catalytic Converter, Driver Side Or After Catalytic Converter, Passenger Side, Before Or After Catalytic Converter, After Catalytic Converter, Before Or After Catalytic Converter, Passenger Side, Before Or After Catalytic Converter, Driver Side, Before Catalytic Converter, Passenger Side Or After Catalytic Converter, Driver SideType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitInterchange Part Number : 18125Connector Gender : Female ConnectorWarranty : 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.

234-4547 Oxygen Sensor, Sold individually 4-wire
Denso®
234-4547 Oxygen Sensor, Sold individually 4-wire
Part Number: NP2344547
Vehicle Info Required to Guarantee Fit
$35.99
Product Details
Location : Before Catalytic Converter Or After Catalytic Converter, Passenger Side, After Catalytic Converter, Driver Side, After Catalytic Converter, Passenger Side, Before Catalytic Converter, Passenger Side, Before Catalytic Converter, Before Catalytic Converter, Driver Side, Before Catalytic Converter, Driver Side Or After Catalytic Converter, Passenger Side, Before Or After Catalytic Converter, Driver Side, Before Or After Catalytic Converter, Before Or After Catalytic Converter, Passenger Side, After Catalytic Converter, Before Catalytic Converter, Passenger Side Or After Catalytic Converter, Driver SideNotes : Heated Sensor TypeType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 14.17 in. Wire LengthThread Size : 0.71 in. Thread SizeMounting Style : Threaded-in Mounting StyleConnector Gender : Female ConnectorWarranty : 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.

23161 Oxygen Sensor, Sold individually 4-wire
NTK®
23161 Oxygen Sensor, Sold individually 4-wire
Part Number: NG23161
Vehicle Info Required to Guarantee Fit
$41.49
Product Details
Location : Passenger Side - Before Catalytic Converter, Driver Side - After Catalytic Converter, After Catalytic Converter, Passenger Side - Before Catalytic Converter, Driver Side - After Catalytic Converter, Passenger Side - Before Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Passenger Side, After Catalytic Converter, Driver Side, Before Catalytic Converter, Driver Side, Before Or After Catalytic Converter, Before Catalytic Converter, Passenger Side, Before Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Before Or After Catalytic Converter, After Catalytic Converter, Driver Side, After Catalytic ConverterNotes : Heated Sensor TypeType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 14 in. Wire LengthThread Size : 18 mm Thread SizeMounting Style : Threaded-in Mounting StyleWarranty : 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.

V33-76-0002 Oxygen Sensor, Sold individually
Vemo®
V33-76-0002 Oxygen Sensor, Sold individually
Part Number: Z8YV33760002
Vehicle Info Required to Guarantee Fit
$65.99
Product Details
Location : Before Catalytic Converter, Driver Or Passenger Side And After Catalytic Converter, Passenger Side, Before Catalytic Converter, Rear, After Catalytic Converter, Driver Side, Before Or After Catalytic Converter, Rear, Downstream, After Catalytic Converter, Passenger Side, After Catalytic Converter, Rear, After Catalytic Converter, Driver Or Passenger Side, Before Catalytic Converter, Passenger Side, Before Or After Catalytic Converter, Front Or Rear, Before Catalytic Converter, Driver Side, Before Catalytic Converter, Driver Or Passenger Side, Upstream, Before Or After Catalytic Converter, Driver Or Passenger Side, Upstream; Downstream, Passenger Side, Before Or After Catalytic Converter, Before Catalytic Converter, Passenger Side And Before Or After Catalytic Converter, Driver Side, After Catalytic Converter, Front, Before Catalytic Converter, Driver Or Passenger Side And After Catalytic Converter, Driver Side, Before Catalytic Converter, Passenger Side And After Catalytic Converter, Driver Or Passenger Side, Before Catalytic Converter, Passenger Side And After Catalytic Converter, Driver Side, Before Or After Catalytic Converter, Driver Side, Before Catalytic Converter, Driver Side And After Catalytic Converter, Passenger Side, Before Or After Catalytic Converter, Passenger SideNotes : (4) Pole Quantity; 90 mm Height; 50 mm Length; 125 mm WidthQuantity Sold : Sold individuallyProduct Fit : Direct FitReplaces OE Number : 4727446AC, 4727446AD, 5033500AA, 5035500AA, 5149169AA, 5149171AA, 5149171AB, 56028584AA, 56028765AA, 56028992AA, 56028998AA, 56028999AB, 56029049AA, 56029049AB, 56030110AA, 56041698AA, 56041730AA, 56044627AA, 56044652AA, 68066160AAInterchange Part Number : 4727446AC, 4727446AD, 5033500AA, 5035500AA, 5149169AA, 5149171AA, 5149171AB, 56028584AA, 56028765AA, 56028992AA, 56028998AA, 56028999AB, 56029049AA, 56029049AB, 56030110AA, 56041698AA, 56041730AA, 56044627AA, 56044652AA, 68066160AAWarranty : 24-month or 24,000-mile Vemo 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 Parts
15510 OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Bosch®
15510 OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15510
Vehicle Info Required to Guarantee Fit
$56.99
Product Details
Location : Driver Side - Before Catalytic Converter, Passenger Side - After Catalytic Converter, Driver Side, Before Or After Catalytic Converter, Before Catalytic Converter, Driver Side - After Catalytic Converter, Before Or After Catalytic Converter, After Catalytic Converter, Passenger Side, Before Or After Catalytic Converter, Passenger Side - Before Catalytic Converter, Driver Side - After Catalytic Converter, Driver Side, After Catalytic Converter, After Catalytic Converter, Passenger Side - Before Catalytic Converter, Before Catalytic Converter, Passenger Side - After Catalytic Converter, Driver Side, Before Catalytic Converter, Passenger Side, After Catalytic Converter, Before Catalytic Converter, Passenger Side, Before Catalytic ConverterNotes : Heated Sensor TypeType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 13.2 in. Wire LengthThread Size : 18 mm Thread SizeMounting Style : Threaded-in Mounting StyleHex Size : 22 mm Hex SizeConnector Gender : Female ConnectorWarranty : 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
ES10596 Oxygen Sensor, Sold individually 4-wire
Delphi®
ES10596 Oxygen Sensor, Sold individually 4-wire
Part Number: DELES10596
Vehicle Info Required to Guarantee Fit
$39.49
Product Details
Location : Front, Driver Side, Front Or Rear, Passenger Side, Front, Passenger Side Or Rear, Driver Side, Rear, Front Or Rear, Front, Passenger Side, Front, Driver Side Or Rear, Passenger Side, Front, Driver Or Passenger Side Or Rear, Passenger Side, Rear, Passenger Side, Front Or Rear, Driver Side, Front, Rear, Driver SideType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 17.72 in. Wire LengthThread Size : 18 x 1.5 mm Thread SizeInterchange Part Number : 15510Warranty : 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.

17212 OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Bosch®
17212 OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS17212
Vehicle Info Required to Guarantee Fit
$75.49
Product Details
Location : Downstream, Downstream Or Upstream, Upstream, Before Or After Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 14.3 in. Wire LengthMounting Style : Threaded-in Mounting StyleInterchange Part Number : 15510Connector Gender : Female ConnectorWarranty : 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
350-35186 Oxygen Sensor, Sold individually
Walker Products®
350-35186 Oxygen Sensor, Sold individually
Part Number: WKP35035186
Vehicle Info Required to Guarantee Fit
$94.49
Product Details
Location : Before Catalytic Converter, Before Or After Catalytic ConverterQuantity Sold : Sold individuallyProduct Fit : Direct FitWarranty : 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.

Page 1 of 3 | Showing 1 - 15 of 41 results

Top Rated Products

DriveWire Oxygen Sensor, 4-Wire, Heated, Female Connector, Threaded-In Type
$27.99( Review)
So far it’s great!
Jeff W.
VERIFIED PURCHASER
Denso 234-4545 Oxygen Sensor, Sold individually 4-wire
$41.99( Review)
Love ordering parts from <a href="http://carparts.com" target="_blank">carparts.com</See More
Victoria G.
VERIFIED PURCHASER

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?