How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 on Cadillac DeVille?

A heated Oxygen Sensor (HO2S) bank 1 sensor 1 replacement requires an engine temperature of at least 48°c (120°F) for proper extraction. Reused sensors get a pre-applied protective coating from the manufacturer but you should apply anti-seize compound p/n 5613695 or equivalent to their threads before reusing them. First secure the vehicle and support it from the ground before you begin to support the rear powertrain frame. Lower framework by no more than 76 mm (3 inches) when you remove the four rear frame bolts. Use a screwdriver to disconnect the rear Oxygen Sensor electrical connector while you pull out the sensor from the rear Exhaust Manifold. Insert the rear Oxygen Sensor into the rear Exhaust Manifold before torquing it to 41 n.m (30 lb ft). The replacement process begins by connecting the rear Oxygen Sensor connector followed by frame elevation. Then reinstall the set of four rear frame bolts while tightening them to 100 n.m (74 lb ft). Finally, lower the vehicle down.

OEM Cadillac DeVille Oxygen Sensor

Oxygen O2 Sensor

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10 Oxygen Sensors found

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Cadillac DeVille Oxygen Sensor Part Number: 19211435
$52.82 MSRP: $164.76
You Save: $111.94 (68%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly, Oxygen; Sensor, Computer Control Sensors
- Replaces: 05613719, 25165116, 19178940, 19178746, 25106169, 5613719, 25165119
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1995 Cadillac DeVille | Base, Cabriolet, Concours, Spring Edition, Touring, d'Elegance | 8 Cyl 4.1 L GAS, 8 Cyl 4.5 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 4.9 L GAS
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Cadillac DeVille Oxygen Sensor Part Number: 19178958
$65.65 MSRP: $133.34
You Save: $67.69 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor; Manifold
- Replaces: 25178022, 25312203, 25312211, 25164488
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Cadillac DeVille | Base, Concours, d'Elegance | 8 Cyl 4.6 L GAS
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Cadillac DeVille Oxygen Sensor Part Number: 12569429
$54.71 MSRP: $111.12
You Save: $56.41 (51%)
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Cadillac DeVille | Base, DHS, DTS, Protection Series | 8 Cyl 4.6 L GAS
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Cadillac DeVille Oxygen Sensor Part Number: 12559850
$59.96 MSRP: $121.78
You Save: $61.82 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2004 Cadillac DeVille | Base, DHS, DTS, Protection Series | 8 Cyl 4.6 L GAS
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Cadillac DeVille Oxygen Sensor Part Number: 5613719
$52.82 MSRP: $164.76
You Save: $111.94 (68%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly, Oxygen; Sensor
- Replaced by: 19211435
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1987 Cadillac DeVille | Base, Cabriolet, d'Elegance, Touring | 8 Cyl 4.1 L GAS
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Cadillac DeVille Oxygen Sensor, Driver Side Part Number: 19355308
$71.31 MSRP: $144.84
You Save: $73.53 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Position: Driver Side
- Replaces: 19178928, 25161131, 25312197
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Cadillac DeVille | Base, Concours, d'Elegance | 8 Cyl 4.6 L GAS
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Cadillac DeVille Oxygen Sensor Part Number: 19178939
$50.91 MSRP: $143.32
You Save: $92.41 (65%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25132086, 25165311, 25312178
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 Cadillac DeVille | Base | 8 Cyl 4.9 L GAS
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Cadillac DeVille Oxygen Sensor Part Number: 12567497
$68.94 MSRP: $123.09
You Save: $54.15 (44%)
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Cadillac DeVille | Base, DHS, DTS, Protection Series | 8 Cyl 4.6 L GAS
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Cadillac DeVille Oxygen Sensor Part Number: 19178945
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25315373
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999, 1996-1997 Cadillac DeVille | Base, Concours, d'Elegance | 8 Cyl 4.6 L GAS
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Cadillac DeVille Oxygen Sensor Part Number: 12559849
$58.70 MSRP: $104.83
You Save: $46.13 (44%)
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2003 Cadillac DeVille | Base, DHS, DTS | 8 Cyl 4.6 L GAS

Cadillac DeVille Oxygen Sensor

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Cadillac DeVille vehicles Oxygen Sensor monitors the air/fuel mixture in the engine exhaust to enhance the engine's performance besides restricting emissions. Despite the unit's high cost, the sensor features a zirconium dioxide sensing element with a platinum coating that converts the mixture's condition into a voltage signal, indicating richness or leanness. This feedback enables the engine control system work in the closed- loop manner and fine tune the air-fuel mixture to ensure the catalytic converter is functioning at its premier. Cadillac DeVille vehicles, as with many other automobiles, usually possess two oxygen sensors with the upstream sensor as the primary feedback supplier to the controller while the downstream is positioned after the catalytic converter. Contamination of the sensor may eventually occur and this will result in high emission together with low fuel economy. Some newer vehicles use what is described as an air fuel ratio sensor in place of the more conventional oxygen sensor; this new kind of sensor has a broader range of input and measures the air/fuel ratio more effectively.

Cadillac DeVille Oxygen Sensor Parts Questions & Experts Answers

Oxygen Sensor
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Q: How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 on Cadillac DeVille?
A:
A heated Oxygen Sensor (HO2S) bank 1 sensor 1 replacement requires an engine temperature of at least 48°c (120°F) for proper extraction. Reused sensors get a pre-applied protective coating from the manufacturer but you should apply anti-seize compound p/n 5613695 or equivalent to their threads before reusing them. First secure the vehicle and support it from the ground before you begin to support the rear powertrain frame. Lower framework by no more than 76 mm (3 inches) when you remove the four rear frame bolts. Use a screwdriver to disconnect the rear Oxygen Sensor electrical connector while you pull out the sensor from the rear Exhaust Manifold. Insert the rear Oxygen Sensor into the rear Exhaust Manifold before torquing it to 41 n.m (30 lb ft). The replacement process begins by connecting the rear Oxygen Sensor connector followed by frame elevation. Then reinstall the set of four rear frame bolts while tightening them to 100 n.m (74 lb ft). Finally, lower the vehicle down.