How to service the oxygen sensor on Chevrolet Astro?

The service of the Oxygen Sensor begins with disconnecting the negative Battery Cable. The technician should lift the vehicle and handle the Oxygen Sensor properly while keeping the pigtail connector attached to both the heated Oxygen Sensor (HO2S) and the Oxygen Sensor (O2S). Operating the sensors relies on this connection. The j 39194 Oxygen Sensor wrench (J 39194) serves to detach the ho2s harness connector that exists in 1x4 or 2x2 formats. Operating below 48°c (120°F) requires caution when removing the ho2s since hard efforts may damage Exhaust Manifold or pipe threads. The j 39194 Oxygen Sensor wrench (J 39194) should be used to install the sensor after applying anti-seize compound gm p/n 5613695 on the threads if needed. Tighten the sensor to 42 n.m (31 lb ft). End the process by connecting the ho2s harness connector while lowering the vehicle then reattach the negative Battery Cable.

How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 on Chevrolet Astro?

The Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 replacement process begins with vehicle elevation and removal of the HO2S connector. You must remove the HO2S by using the Oxygen Sensor Wrench (J 39194-B). Workers should apply anti-seize compound GM P/N 5613695 to the threads before reinstallation of the sensor. Use the Oxygen Sensor Wrench (J 39194-B) to install the HO2S then apply torque to 42 N.m (31 lb ft). Connect the HO2S harness connector and put away the vehicle.

OEM Chevrolet Astro Oxygen Sensor

Oxygen O2 Sensor

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11 Oxygen Sensors found

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Chevrolet Astro Oxygen Sensor Part Number: 19178938
$63.56 MSRP: $129.10
You Save: $65.54 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25165314, 25161152, 25312185
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 Chevrolet Astro | Base, CL, CS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor Part Number: 19178918
$80.06 MSRP: $142.96
You Save: $62.90 (44%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25163079, 25312200
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor, Driver Side Part Number: 12561777
$79.34 MSRP: $143.61
You Save: $64.27 (45%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Position: Driver Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2002 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor Part Number: 25176708
$60.12 MSRP: $112.89
You Save: $52.77 (47%)
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Product Specifications
- Other Name: Sensor Assembly, Oxygen; Sensor, Computer Control Sensors
- Replaces: 10096129
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 Chevrolet Astro | Base, CL, CS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor Part Number: 19178959
$58.38 MSRP: $118.58
You Save: $60.20 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25165312, 25312179
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 Chevrolet Astro | Base, CL, CS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor Part Number: 19355310
$86.80 MSRP: $163.00
You Save: $76.20 (47%)
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Product Specifications
- Other Name: Sensor Assembly, Heated Oxygen; Sensor, Computer Control Sensors
- Replaces: 19178935, 25312194, 25161128
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor Part Number: 12558143
$36.01 MSRP: $112.36
You Save: $76.35 (68%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-1999 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor Part Number: 19211437
$19.00 MSRP: $33.92
You Save: $14.92 (44%)
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Sensor, Emission Control Sensor(Vehicle Speed); Sensor, Emission Control Sensor(Oxygen)
- Replaces: 19178952, 25171573, 25166816, 25171574, 25162693, 25106073, 25107378, 25165118, 25171581, 25132068, 25165120, 25162600, 19178953, 19178943, 25133185, 25133076, 19178919, 25162753
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1991 Chevrolet Astro | Base, CL, CS, LT | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor, Passenger Side Part Number: 12561776
$70.80 MSRP: $126.41
You Save: $55.61 (44%)
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2002 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor, Driver Side Part Number: 12589550
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Sensor, Computer Control Sensors
- Position: Driver Side
- Replaces: 12570795
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2005 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS
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Chevrolet Astro Oxygen Sensor, Passenger Side Part Number: 12589549
$69.46 MSRP: $124.05
You Save: $54.59 (45%)
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Sensor, Computer Control Sensors
- Position: Passenger Side
- Replaces: 12570794
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2005 Chevrolet Astro | Base, LS, LT | 6 Cyl 4.3 L GAS

Chevrolet Astro Oxygen Sensor

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The Oxygen Sensor in automobiles particularly Chevrolet Astro is essentially used to check the residual unburned oxygen in the exhaust gas that is very useful to determine the mixture of air and fuel as well as generic emissions. It produces a voltage signal proportional to the concentration of oxygen, therefore the engine control computer is in a position to change the pulse width of the fuel injector. This back feedback system makes the engine to run in a "closed loop" improving the efficiency of the catalytic converter. Chevrolet Astro cars might have zirconium dioxide oxygen sensors, both narrow-band and wideband sensors are possible. Narrow-band sensors deliver repeatedly shifting rich/lean signals, while wide-band sensors supply a wider air-fuel mixture range signals. These sensors can, however, reduce in their effectiveness over time because of contaminant which causes excess emissions and less fuel economy. A Chevrolet Astro's Oxygen Sensor should be checked and serviced as often as possible for the vehicle to operate optimally.

Chevrolet Astro Oxygen Sensor Parts and Q&A

Oxygen Sensor, Passenger Side
12561776
Q: How to service the oxygen sensor on Chevrolet Astro?
A:
The service of the Oxygen Sensor begins with disconnecting the negative Battery Cable. The technician should lift the vehicle and handle the Oxygen Sensor properly while keeping the pigtail connector attached to both the heated Oxygen Sensor (HO2S) and the Oxygen Sensor (O2S). Operating the sensors relies on this connection. The j 39194 Oxygen Sensor wrench (J 39194) serves to detach the ho2s harness connector that exists in 1x4 or 2x2 formats. Operating below 48°c (120°F) requires caution when removing the ho2s since hard efforts may damage Exhaust Manifold or pipe threads. The j 39194 Oxygen Sensor wrench (J 39194) should be used to install the sensor after applying anti-seize compound gm p/n 5613695 on the threads if needed. Tighten the sensor to 42 n.m (31 lb ft). End the process by connecting the ho2s harness connector while lowering the vehicle then reattach the negative Battery Cable.
Oxygen Sensor, Driver Side
12561777
Q: How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 on Chevrolet Astro?
A:
The Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 replacement process begins with vehicle elevation and removal of the HO2S connector. You must remove the HO2S by using the Oxygen Sensor Wrench (J 39194-B). Workers should apply anti-seize compound GM P/N 5613695 to the threads before reinstallation of the sensor. Use the Oxygen Sensor Wrench (J 39194-B) to install the HO2S then apply torque to 42 N.m (31 lb ft). Connect the HO2S harness connector and put away the vehicle.