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2012 Nissan Sentra
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2012 Nissan Sentra

2012 Nissan Sentra Oxygen Sensors

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Before Catalytic Converter Oxygen Sensor, Sold Individually, 4-Wire, 4 Cyl., 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
DriveWire
Before Catalytic Converter Oxygen Sensor, Sold Individually, 4-Wire, 4 Cyl., 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
Part Number: REPN960915
Guaranteed to Fit
$50.49
Vehicle Fitment
  • 2012 Nissan Sentra S 4 Cyl 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
  • 2012 Nissan Sentra SR 4 Cyl 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
  • 2012 Nissan Sentra Base 4 Cyl 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
  • 2012 Nissan Sentra SL 4 Cyl 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
Product Details
Location : Before Catalytic ConverterNotes : Before Catalytic Converter, 4-Wire, Air-Fuel RatioType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 12.32 in. Wire LengthThread Size : 18 mm Thread SizeInterchange Part Number : 25054035Connector 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, Base/S/SL/SR Models, 2.0L Engine MR20DE; FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1, 4-wire, Male Connector
DriveWire
Before Catalytic Converter Oxygen Sensor, Base/S/SL/SR Models, 2.0L Engine MR20DE; FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1, 4-wire, Male Connector
Part Number: SET-REPN960915-2
Guaranteed to Fit
$95.99
Vehicle Fitment
  • 2012 Nissan Sentra S 4 Cyl 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
  • 2012 Nissan Sentra SR 4 Cyl 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
  • 2012 Nissan Sentra Base 4 Cyl 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
  • 2012 Nissan Sentra SL 4 Cyl 2.0L MR20DE Engine, FI, Naturally Aspirated, GAS, Non Calif-ESV, B1S1
Product Details
Location : Before Catalytic ConverterNotes : 4-Wire, Air-Fuel RatioComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Product Fit : Direct FitWire Length : 12.32 in. Wire LengthThread Size : 18 mm Thread 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 (After Catalytic Converter, Base/S/SL/SR Models, 2.0L Engine MR20DE; B1S2)/(After Catalytic Converter, SE-R/SE-R Spec V Models, 2.5L Engine QR25DE; B1S2), 4-wire, Male Connector
DriveWire
Oxygen Sensor (After Catalytic Converter, Base/S/SL/SR Models, 2.0L Engine MR20DE; B1S2)/(After Catalytic Converter, SE-R/SE-R Spec V Models, 2.5L Engine QR25DE; B1S2), 4-wire, Male Connector
Part Number: REPN960910
Guaranteed to Fit
$27.99
Vehicle Fitment
  • 2012 Nissan Sentra S 4 Cyl 2.0L B1S2
  • 2012 Nissan Sentra SR 4 Cyl 2.0L B1S2
  • 2012 Nissan Sentra SL 4 Cyl 2.0L B1S2
  • 2012 Nissan Sentra SE-R Spec V 4 Cyl 2.5L B1S2
  • 2012 Nissan Sentra Base 4 Cyl 2.0L B1S2
  • 2012 Nissan Sentra SE-R 4 Cyl 2.5L B1S2
Product Details
Location : After Catalytic ConverterNotes : 19.8 in. Overall Length; Heated Sensor Type; 20 Wire Gauge MeasurementType : 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 : 25024741Connector 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, Set of 2 4-wire
DriveWire
Oxygen Sensor, Set of 2 4-wire
Part Number: SET-REPN960910-2A
Guaranteed to Fit
$62.99
Vehicle Fitment
  • 2012 Nissan Sentra SE-R 4 Cyl 2.5L B1S2
  • 2012 Nissan Sentra SE-R Spec V 4 Cyl 2.5L B1S2
Product Details
Location : Before and After Catalytic ConverterType : 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 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 Catalytic Converter Oxygen Sensor, SE-R/SE-R Spec V Models, 2.5L Engine QR25DE; B1S1, 4-wire, Male Connector
DriveWire
Before Catalytic Converter Oxygen Sensor, SE-R/SE-R Spec V Models, 2.5L Engine QR25DE; B1S1, 4-wire, Male Connector
Part Number: REPN960909
Guaranteed to Fit
$38.49
Vehicle Fitment
  • 2012 Nissan Sentra SE-R Spec V 4 Cyl 2.5L B1S1
  • 2012 Nissan Sentra SE-R 4 Cyl 2.5L B1S1
Product Details
Location : Before Catalytic ConverterNotes : Air/Fuel sensorType : 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 : 25054037Connector 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
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Bosch®
OE Replacement Series Oxygen Sensor, Sold individually 4-wire
Part Number: BS15387
Guaranteed to Fit
$133.49
Vehicle Fitment
  • 2012 Nissan Sentra S 4 Cyl 2.0L OE sensor technology
  • 2012 Nissan Sentra SE-R Spec V 4 Cyl 2.5L OE sensor technology
  • 2012 Nissan Sentra SR 4 Cyl 2.0L OE sensor technology
  • 2012 Nissan Sentra Base 4 Cyl 2.0L OE sensor technology
  • 2012 Nissan Sentra SE-R 4 Cyl 2.5L OE sensor technology
  • 2012 Nissan Sentra SL 4 Cyl 2.0L OE sensor technology
Product Details
Location : DownstreamType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 19.3 in. Wire LengthWarranty : 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
Catalytic Converter Kit, CARB and Federal EPA Standards, 50-state Legal, 4 Cyl., 2.0L Engine, Direct Fit, includes Oxygen Sensor
Magnaflow®
Catalytic Converter Kit, CARB and Federal EPA Standards, 50-state Legal, 4 Cyl., 2.0L Engine, Direct Fit, includes Oxygen Sensor
Part Number: KIT-083023-82
Guaranteed to Fit
$604.99
Vehicle Fitment
  • 2012 Nissan Sentra Base 4 Cyl 2.0L EO# D-193-152; Eng Fam No: Cnsxv02.082A
  • 2012 Nissan Sentra SR 4 Cyl 2.0L EO# D-193-152; Eng Fam No: Cnsxv02.082A
  • 2012 Nissan Sentra SL 4 Cyl 2.0L EO# D-193-152; Eng Fam No: Cnsxv02.082A
  • 2012 Nissan Sentra S 4 Cyl 2.0L EO# D-193-152; Eng Fam No: Cnsxv02.082A
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-193-152Gasket Included : Without GasketOxygen Sensor Ports : Factory OEM PortsOxygen Sensor Port Location : Factory OEM LocationsWarranty : 5-year or 50,000-mile Magnaflow limited 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 : 25024741Promotions : Magnaflow Catalytic Converter SaleTube Material : Stainless Steel
Oxygen Sensor, Sold individually 4-wire
Denso®
Oxygen Sensor, Sold individually 4-wire
Part Number: NP2349096
Guaranteed to Fit
$159.49
Vehicle Fitment
  • 2012 Nissan Sentra Base 4 Cyl 2.0L Exc. Calif.; Air Fuel Ratio Sensor
  • 2012 Nissan Sentra SL 4 Cyl 2.0L Exc. Calif.; Air Fuel Ratio Sensor
  • 2012 Nissan Sentra SR 4 Cyl 2.0L Exc. Calif.; Air Fuel Ratio Sensor
  • 2012 Nissan Sentra S 4 Cyl 2.0L Exc. Calif.; Air Fuel Ratio Sensor
Product Details
Location : Before Catalytic ConverterType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 14.57 in. Wire LengthThread Size : M18 Thread SizeInterchange Part Number : 15730, SG300Connector Gender : Male 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.

Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35034634
Guaranteed to Fit
$68.99
Vehicle Fitment
  • 2012 Nissan Sentra S 4 Cyl 2.0L Eng. Designation: MR20DE, FI, Naturally Aspirated, GAS
  • 2012 Nissan Sentra SR 4 Cyl 2.0L Eng. Designation: MR20DE, FI, Naturally Aspirated, GAS
  • 2012 Nissan Sentra SL 4 Cyl 2.0L Eng. Designation: MR20DE, FI, Naturally Aspirated, GAS
  • 2012 Nissan Sentra SE-R Spec V 4 Cyl 2.5L Eng. Designation: QR25DE, FI, Naturally Aspirated, GAS
  • 2012 Nissan Sentra Base 4 Cyl 2.0L Eng. Designation: MR20DE, FI, Naturally Aspirated, GAS
  • 2012 Nissan Sentra SE-R 4 Cyl 2.5L Eng. Designation: QR25DE, FI, Naturally Aspirated, GAS
Product Details
Location : After Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 18.7 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
Before Catalytic Converter Oxygen Sensor, Sold individually 4-wire
Denso®
Before Catalytic Converter Oxygen Sensor, Sold individually 4-wire
Part Number: NP2349082
Guaranteed to Fit
$170.49
Vehicle Fitment
  • 2012 Nissan Sentra Base 4 Cyl 2.0L Calif.; Air Fuel Ratio Sensor
  • 2012 Nissan Sentra SR 4 Cyl 2.0L Calif.; Air Fuel Ratio Sensor
  • 2012 Nissan Sentra SL 4 Cyl 2.0L Calif.; Air Fuel Ratio Sensor
  • 2012 Nissan Sentra S 4 Cyl 2.0L Calif.; Air Fuel Ratio Sensor
Product Details
Location : Before Catalytic ConverterNotes : For vehicles with California emission systemType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 14.37 in. Wire LengthThread Size : M18 Thread SizeInterchange Part Number : 15730, SG300Connector Gender : Male 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.

Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP25024741
Guaranteed to Fit
$78.49
Vehicle Fitment
  • 2012 Nissan Sentra S 4 Cyl 2.0L B1S2
  • 2012 Nissan Sentra SR 4 Cyl 2.0L B1S2
  • 2012 Nissan Sentra SL 4 Cyl 2.0L B1S2
  • 2012 Nissan Sentra SE-R Spec V 4 Cyl 2.5L B1S2
  • 2012 Nissan Sentra Base 4 Cyl 2.0L B1S2
  • 2012 Nissan Sentra SE-R 4 Cyl 2.5L B1S2
Product Details
Location : After Catalytic ConverterNotes : HeatedType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 18.7 in. Wire LengthInterchange Part Number : REPN960910Warranty : 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
Before Catalytic Converter OE Replacement Series Oxygen Sensor, Sold individually 5-wire
Bosch®
Before Catalytic Converter OE Replacement Series Oxygen Sensor, Sold individually 5-wire
Part Number: BS18090
Guaranteed to Fit
$233.99
Vehicle Fitment
  • 2012 Nissan Sentra Base 4 Cyl 2.0L With California Emissions
  • 2012 Nissan Sentra SL 4 Cyl 2.0L With California Emissions
  • 2012 Nissan Sentra SR 4 Cyl 2.0L With California Emissions
  • 2012 Nissan Sentra S 4 Cyl 2.0L With California Emissions
Product Details
Location : Before Catalytic ConverterNotes : Heated Sensor TypeType : 5-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.7 in. Wire LengthThread Size : 18 mm Thread SizeMounting Style : Screw-in Mounting StyleHex Size : 22 mm Hex SizeConnector Gender : Male 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
Before Catalytic Converter Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
Before Catalytic Converter Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP25054089
Guaranteed to Fit
$172.49
Vehicle Fitment
  • 2012 Nissan Sentra Base 4 Cyl 2.0L B1S1; California-Esv
  • 2012 Nissan Sentra SL 4 Cyl 2.0L B1S1; California-Esv
  • 2012 Nissan Sentra SR 4 Cyl 2.0L B1S1; California-Esv
  • 2012 Nissan Sentra S 4 Cyl 2.0L B1S1; California-Esv
Product Details
Location : Before Catalytic ConverterNotes : Air/Fuel sensorType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 18.31 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
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP25054037
Guaranteed to Fit
$117.49
Vehicle Fitment
  • 2012 Nissan Sentra SE-R Spec V 4 Cyl 2.5L B1S1
  • 2012 Nissan Sentra SE-R 4 Cyl 2.5L B1S1
Product Details
Location : Before Catalytic ConverterNotes : Air/Fuel sensorType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 15.75 in. Wire LengthInterchange Part Number : REPN960909Warranty : 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
Before Catalytic Converter Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Walker Products®
Before Catalytic Converter Walker Products Aftermarket Base Sensor Oxygen Sensor, Sold individually 4-wire
Part Number: WKP35064067
Guaranteed to Fit
$186.99
Vehicle Fitment
  • 2012 Nissan Sentra Base 4 Cyl 2.0L Eng. Designation: MR20DE, FI, Naturally Aspirated, GAS, Calif-ESV
  • 2012 Nissan Sentra SL 4 Cyl 2.0L Eng. Designation: MR20DE, FI, Naturally Aspirated, GAS, Calif-ESV
  • 2012 Nissan Sentra SR 4 Cyl 2.0L Eng. Designation: MR20DE, FI, Naturally Aspirated, GAS, Calif-ESV
  • 2012 Nissan Sentra S 4 Cyl 2.0L Eng. Designation: MR20DE, FI, Naturally Aspirated, GAS, Calif-ESV
Product Details
Location : Before Catalytic ConverterNotes : Air/Fuel sensorType : 4-wireQuantity Sold : Sold individuallyProduct Fit : Direct FitWire Length : 18.31 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
Page 1 of 3 | Showing 1 - 15 of 45 results

Popular Products

Product Questions & Answers

Walker Products Before Catalytic Converter Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
$172.49
Q:Is this product California emissions?
Robert B.
A:BEST ANSWERHi Robert, I'm pleased to assist you. Yes. This item complies with the California emission standard. Take advantage of the sale price and limited stocks for this item. Click this link to order this part: https://www.carparts.com/oxygen-sensor/walker-products/wkp25054089?can=CPAP3648 I hope this is helpful. Enjoy shopping at Carparts.com! Show less
Aldrin P.
 
1 Question, 1 AnswerView all Q&As >
Walker Products Walker Products Original Equipment Base Sensor Oxygen Sensor, Sold individually 4-wire
$117.49
Q:Hi, this sensor will fit a 2007 nissan altima s four cilinders  the one is on catalytic converter? Show Less
diego h.
A:BEST ANSWERHi Walter, I'm glad to assist you. This is on the upper or usually called upstream location, on the intake location. The lower or also called downstream, is located on the exhaust portion. Still, it is best to refer to a vehicle-specific service repair manual or consult your trusted local auto repair shop for this. If this is what you need. Grab our discounted offer with 67% off already. Click the link below to order today while on sale. Happy shopping! https://www.carparts.com/oxygen-sensor/walker-products/wkp25054037?can=CPJE1043_CSQA_20220804 Show less
Jeonino E.
 
2 Questions, 1 AnswerView all Q&As >

Helpful Automotive Resources

P2187 Code: System too Lean at Idle (Bank 1)
P2187 Code: System too Lean at Idle (Bank 1)Note that there is only one bank if your car has a straight engine and the scan tool will always refer to that bank as “Bank 1.” P2187 code indicates that your vehicle’s computer detected a potential issue with the fuel mixture at idle.
P2270 Code: O2 Sensor Signal Biased / Stuck Lean (Bank 1, Sensor 2)
P2270 Code: O2 Sensor Signal Biased / Stuck Lean (Bank 1, Sensor 2)Bank 1 is where the #1 spark plug is. O2 sensor 1/1 is the upstream sensor on Bank 1 (different for a Ford than for a Chevy or a Dodge), and O2 sensor 1/2 is the downstream sensor on Bank 1. O2 2/1 is upstream on Bank 2 and O2
P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)With that in mind, it’s important to note that Bank 1 is always where the number 1 cylinder is located. Thus, on Ford pickups, Bank 1 is the passenger side bank, but on Chevy and Dodge pickups, Bank 1 is the driver side bank. You need to know this, or
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3
P0042 Code: HO2S Heater Control Circuit Bank 1 Sensor 3Bank 1 is the side of the engine where the #1 cylinder is located. P0042 code is set when your car’s PCM determines a potential problem with the heater element circuit of the oxygen sensor.
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P0135 Code: Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)Diagnostic trouble code (DTC) P0135 stands for “Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1).” It is set when the car’s primary computer—also called the powertrain control module or PCM—determines that the heated oxygen sensor (HO2S) 1 heater current is higher or lower than the ideal amp for
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)The Bank 1 portion of the code refers to the side of the engine with the number one cylinder. Sensor 1 refers to the upstream O2 sensor.