How to replace the Heated Oxygen Sensor (HO2S) for Bank 2 Sensor 1 on 2009 Cadillac CTS?

Begin the Heated Oxygen Sensor (HO2S) for Bank 2 Sensor 1 replacement by ensuring the ignition is OFF. The sight shield for the fuel injector should be taken off if needed. After properly supporting the vehicle you should disconnect the HO2S electrical connector from its wiring harness bracket and extract the device. Handle the HO2S and the O2S with care while avoiding the use of grease or dirt which could contaminate them and refrain from dropping or harsh handling. The removal process becomes simpler after the engine reaches a temperature level of 48°C (120°F). Before reinstalling the sensor threads treat them with anti-seize compound P/N 5613695 or its equivalent which is already pre-applied on new service sensors. Screw the HO2S to a maximum torque of 40 Nm then resume connection of the HO2S electrical connector to its bracket on the wiring harness. Close the vehicle hatch before returning the fuel injector sight shield that may have been taken out earlier.

OEM 2009 Cadillac CTS Oxygen Sensor

Oxygen O2 Sensor

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6 Oxygen Sensors found

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2009 Cadillac CTS Oxygen Sensor
Part Number: 12596327
$132.76 MSRP: $269.65
You Save: $136.89 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Wideband Air/Fuel Sensor; Air / Fuel Ratio Sensor; Air/Fuel Sensor; Front Oxygen Sensor
- Item Weight: 0.60 Pounds
- Item Dimensions: 8.4 x 3.4 x 3.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- Require Quantity: 2
- SKU: 12596327
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2009 Cadillac CTS Submodels:
- Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.6 L GAS
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2009 Cadillac CTS Oxygen Sensor
Part Number: 19353381
$130.34 MSRP: $244.38
You Save: $114.04 (47%)
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Product Specifications
- Other Name: Sensor Assembly, Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Replaces: 12594935
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.1 x 3.1 x 3.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19353381
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2009 Cadillac CTS Submodels:
- Base, Luxury, Performance, Premium, V | 6 Cyl 3.6 L GAS, 8 Cyl 6.2 L GAS
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2009 Cadillac CTS Oxygen Sensor
Part Number: 12615194
$94.52 MSRP: $191.98
You Save: $97.46 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Item Weight: 0.60 Pounds
- Item Dimensions: 8.5 x 3.2 x 3.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12615194
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2009 Cadillac CTS Submodels:
- V | 8 Cyl 6.2 L GAS
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2009 Cadillac CTS Oxygen Sensor
Part Number: 12597449
$85.39 MSRP: $173.44
You Save: $88.05 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.4 x 3.3 x 3.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12597449
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Cadillac CTS Submodels:
- Base, V | 6 Cyl 3.6 L GAS, 8 Cyl 6.2 L GAS
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2009 Cadillac CTS Oxygen Sensor
Part Number: 12607410
$42.07 MSRP: $85.44
You Save: $43.37 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.4 x 3.1 x 3.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- Require Quantity: 2
- SKU: 12607410
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Cadillac CTS Submodels:
- V | 8 Cyl 6.2 L GAS
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2009 Cadillac CTS Oxygen Sensor, Driver Side
Part Number: 12601266
$36.31 MSRP: $73.74
You Save: $37.43 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Rear Oxygen Sensor; Sensor, Computer Control Sensors
- Position: Driver Side
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.1 x 2.1 x 2.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12601266
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Cadillac CTS Submodels:
- Base, V | 6 Cyl 3.6 L GAS, 8 Cyl 6.2 L GAS

2009 Cadillac CTS Oxygen Sensor

With a comprehensive array of OEM 2009 Cadillac CTS Oxygen Sensor, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2009 Cadillac CTS Oxygen Sensor are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2009 Cadillac CTS Parts Questions & Experts Answers

Q: How to replace the Heated Oxygen Sensor (HO2S) for Bank 2 Sensor 1 on 2009 Cadillac CTS?
A: Begin the Heated Oxygen Sensor (HO2S) for Bank 2 Sensor 1 replacement by ensuring the ignition is OFF. The sight shield for the fuel injector should be taken off if needed. After properly supporting the vehicle you should disconnect the HO2S electrical connector from its wiring harness bracket and extract the device. Handle the HO2S and the O2S with care while avoiding the use of grease or dirt which could contaminate them and refrain from dropping or harsh handling. The removal process becomes simpler after the engine reaches a temperature level of 48°C (120°F). Before reinstalling the sensor threads treat them with anti-seize compound P/N 5613695 or its equivalent which is already pre-applied on new service sensors. Screw the HO2S to a maximum torque of 40 Nm then resume connection of the HO2S electrical connector to its bracket on the wiring harness. Close the vehicle hatch before returning the fuel injector sight shield that may have been taken out earlier.