How to service the Bank 2 Sensor 1 oxygen sensor on Cadillac Eldorado?

Vehicle elevation with proper support marks the beginning of bank 2 sensor 1 Oxygen Sensor servicing. The service of bank 2 sensor 1 requires disconnecting the front Oxygen Sensor electrical connector after removing the front splash shield. When servicing oxygen sensors maintain engine temperatures above 48°c (120°F) because the job will become more challenging. The front Exhaust Manifold needs the front Oxygen Sensor to be removed for service purposes. Before placing the new sensor make sure you cover the threads with special anti-seize compound; new service sensors arrive with pre-applied anti-seize compound material and used sensors require anti-seize compound p/n 5613695 or equivalent for coating purposes. Screw the front Oxygen Sensor into the front Exhaust Manifold with 41 n.m (30 lb ft) torque. Complete the installation by reconnecting the front Oxygen Sensor electrical connector then reinstalling the front splash shield as the vehicle returns to its lowered position.

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

To remove the heated Oxygen Sensor (BO2S) bank 2 sensor 1, first lift and support the vehicle, and remove the front splash shield. Remove the front Oxygen Sensor electrical connector while making sure that the engine is warmed up above 48°c (120°F) to make it easier to take out. Next, pull out the front Oxygen Sensor from the front Exhaust Manifold. For installation use anti-seize compound p/n 5613695 or equivalent apply to the threads on a reused sensor on new service sensors should have this compound applied. Replace the front Oxygen Sensor into the front Exhaust Manifold and tighten the same to 41 n.m (30 lb ft). Put the front splash shield back and lower the vehicle. Reconnect the front Oxygen Sensor electrical connector.

OEM Cadillac Eldorado Oxygen Sensor

Oxygen O2 Sensor

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8 Oxygen Sensors found

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Cadillac Eldorado Oxygen Sensor Part Number: 19211435
$52.82 MSRP: $164.76
You Save: $111.94 (68%)
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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:
- 1988-1993 Cadillac Eldorado | Base, Biarritz, Spring Edition, Touring | 8 Cyl 4.5 L GAS, 8 Cyl 4.9 L GAS
- 1984 Cadillac Eldorado | Base, Biarritz, Cabriolet, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac Eldorado Oxygen Sensor Part Number: 19178958
$61.65 MSRP: $125.22
You Save: $63.57 (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:
- 1996-1998 Cadillac Eldorado | Base, ESC, ETC | 8 Cyl 4.6 L GAS
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Cadillac Eldorado 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:
- 2000-2002 Cadillac Eldorado | ESC, ETC | 8 Cyl 4.6 L GAS
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Cadillac Eldorado 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:
- 1984 Cadillac Eldorado | Base, Biarritz, Cabriolet, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac Eldorado 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 Eldorado | Base, ESC, ETC | 8 Cyl 4.6 L GAS
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Cadillac Eldorado 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:
- 1993-1995 Cadillac Eldorado | Base, ETC, Sport, Touring | 8 Cyl 4.6 L GAS
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Cadillac Eldorado 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:
- 2000-2002 Cadillac Eldorado | ESC, ETC | 8 Cyl 4.6 L GAS
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Cadillac Eldorado 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 Cadillac Eldorado | ESC, ETC | 8 Cyl 4.6 L GAS

Cadillac Eldorado Oxygen Sensor

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The Oxygen Sensor is a crucial component of Cadillac Eldorado cars as it regulates the amount of remaining oxygen in the exhaust emissions so as to enhance the proportionate mixture of air and fuel in the vehicles for superior performance and less polluting of the environment. It produces a voltage signal in relation to the level of the oxygen present and this signal is used by the engine control computer to alter the pulse wide of the fuel injector. It also provides this engine function as a feedback system called 'Closed loop' thus improving the efficiency of the catalytic converter. Most Cadillac Eldorado versions use zirconium dioxide for oxygen sensors that can be either narrow-band or wide-band. The narrow-band sensors give the inputs in the form of rich/lean signals and the wide-band sensors give a wider range inputs of the air-fuel mixture. The main difference is in the work range and the method of signal generation, and the sensors of the wide band provide more accurate information. However, they get contaminated with time and thereby cause higher emissions and a potential problem with the vehicle's performance.

Cadillac Eldorado Oxygen Sensor Parts and Q&A

Oxygen Sensor
12559850
Q: How to service the Bank 2 Sensor 1 oxygen sensor on Cadillac Eldorado?
A:
Vehicle elevation with proper support marks the beginning of bank 2 sensor 1 Oxygen Sensor servicing. The service of bank 2 sensor 1 requires disconnecting the front Oxygen Sensor electrical connector after removing the front splash shield. When servicing oxygen sensors maintain engine temperatures above 48°c (120°F) because the job will become more challenging. The front Exhaust Manifold needs the front Oxygen Sensor to be removed for service purposes. Before placing the new sensor make sure you cover the threads with special anti-seize compound; new service sensors arrive with pre-applied anti-seize compound material and used sensors require anti-seize compound p/n 5613695 or equivalent for coating purposes. Screw the front Oxygen Sensor into the front Exhaust Manifold with 41 n.m (30 lb ft) torque. Complete the installation by reconnecting the front Oxygen Sensor electrical connector then reinstalling the front splash shield as the vehicle returns to its lowered position.
Oxygen Sensor
12559849
Q: How to replace the Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 on Cadillac Eldorado?
A:
To remove the heated Oxygen Sensor (BO2S) bank 2 sensor 1, first lift and support the vehicle, and remove the front splash shield. Remove the front Oxygen Sensor electrical connector while making sure that the engine is warmed up above 48°c (120°F) to make it easier to take out. Next, pull out the front Oxygen Sensor from the front Exhaust Manifold. For installation use anti-seize compound p/n 5613695 or equivalent apply to the threads on a reused sensor on new service sensors should have this compound applied. Replace the front Oxygen Sensor into the front Exhaust Manifold and tighten the same to 41 n.m (30 lb ft). Put the front splash shield back and lower the vehicle. Reconnect the front Oxygen Sensor electrical connector.