How Does the Oxygen Sensor in the Exhaust System Work?

The oxygen sensor in the exhaust system reacts with the elements to produce a voltage output that varies based on the amount of oxygen in the exhaust. This feedback signal is used by the PCM to determine the required fuel injector pulse width and control the air/fuel ratio. The ideal ratio for emissions, fuel economy, and engine performance is 14.7:The post-converter oxygen sensor monitors the efficiency of the catalytic converter. The configuration of the oxygen sensor varies depending on the model and emissions package. The sensor operates correctly when there are good electrical connections, proper air circulation, correct operating temperature, and unleaded fuel. The PCM can detect sensor problems and set Diagnostic Trouble Codes. To replace the sensor, raise the vehicle, locate the sensor and disconnect it, remove the sensor using a wrench or socket, clean the threads, and apply anti-seize compound if necessary. Installation is the reverse of removal.

Genuine Jeep Grand Cherokee Oxygen Sensor

Oxygen O2 Sensor

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57 Oxygen Sensors found

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Jeep Grand Cherokee Oxygen Sensor
Part Number: 5149180AA
$81.55 MSRP: $118.00
You Save: $36.45 (31%)
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Product Specifications
- Other Name: Sensor-Oxygen
- Replaced by: 5149180AB
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2011-2019 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Laredo AWD, Laredo RWD, Limited 2WD, Limited 4WD, Limited AWD, Limited RWD, Overland 2WD, Overland 4WD, Overland AWD, Overland RWD, SRT AWD, Summit AWD, Summit RWD, Trackhawk AWD, Trailhawk AWD | 6 Cyl 3.6L, 8 Cyl 5.7L, 8 Cyl 6.2L, 8 Cyl 6.4L
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Jeep Grand Cherokee Sensor-Oxygen
Part Number: 5149180AB
$78.39 MSRP: $118.00
You Save: $39.61 (34%)
ADD TO CART
Product Specifications
- Replaces: 5149180AA
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2011-2022 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Laredo AWD, Laredo RWD, Limited 2WD, Limited 4WD, Limited AWD, Limited RWD, Overland 2WD, Overland 4WD, Overland AWD, Overland RWD, SRT AWD, Summit AWD, Summit RWD, Trackhawk AWD, Trailhawk AWD | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV), 6 Cyl 3.6 L FLEX, 6 Cyl 3.6L, 8 Cyl 5.7 L GAS, 8 Cyl 5.7L, 8 Cyl 6.2L, 8 Cyl 6.4L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 56028994AB
$69.69 MSRP: $107.00
You Save: $37.31 (35%)
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Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor, Upper Oxygen Sensor
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2005-2006 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD, Overland 2WD, Overland 4WD, SRT8 4WD | 6 Cyl 3.7L, 8 Cyl 5.7L, 8 Cyl 6.1L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 56041212AE
$129.64 MSRP: $195.00
You Save: $65.36 (34%)
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Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 1999-2000 Jeep Grand Cherokee | 2WD, 4WD, Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD | 6 Cyl 4.0L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 5149170AA
$111.48 MSRP: $168.00
You Save: $56.52 (34%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor, Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2011 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD, Overland 2WD, Overland 4WD | 8 Cyl 5.7L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 56028998AB
$72.29 MSRP: $111.00
You Save: $38.71 (35%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor, Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2005-2007 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD, Overland 2WD, Overland 4WD | 8 Cyl 4.7L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 56041213
$100.86 MSRP: $153.00
You Save: $52.14 (35%)
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Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor, Rear Oxygen Sensor
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 1998 Jeep Grand Cherokee | 2WD, 4WD | 8 Cyl 5.2L, 8 Cyl 5.9L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 68250166AA
$100.20 MSRP: $133.00
You Save: $32.80 (25%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor, Upper Oxygen Sensor
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2018-2021 Jeep Grand Cherokee | Limited AWD, Limited RWD, Overland AWD, Overland RWD, Summit AWD, Summit RWD, Trackhawk AWD, Trailhawk AWD | 8 Cyl 6.2L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 56041213AF
$127.41 MSRP: $192.00
You Save: $64.59 (34%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor, Rear Oxygen Sensor
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 1999 Jeep Grand Cherokee | 2WD, 4WD | 6 Cyl 4.0L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 56028994AA
$70.96 MSRP: $109.00
You Save: $38.04 (35%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2004 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD | 6 Cyl 4.0L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 56029333AA
$147.52 MSRP: $224.00
You Save: $76.48 (35%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2002-2003 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD, Overland 4WD, Sport 2WD, Sport 4WD | 8 Cyl 4.7L
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Jeep Grand Cherokee Oxygen Sensor
Part Number: 56028995AA
$72.57 MSRP: $111.00
You Save: $38.43 (35%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2004 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD | 6 Cyl 4.0L
View related parts
Jeep Grand Cherokee Oxygen Sensor
Part Number: 56028997AA
$93.08 MSRP: $143.00
You Save: $49.92 (35%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor, Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2004 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD | 6 Cyl 4.0L
View related parts
Jeep Grand Cherokee Oxygen Sensor
Part Number: 56041212AF
$136.35 MSRP: $205.00
You Save: $68.65 (34%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor, Rear Oxygen Sensor
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 1999-2000 Jeep Grand Cherokee | 2WD, 4WD, Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD | 6 Cyl 4.0L
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Jeep Grand Cherokee Oxygen Sensor Lower Left
Part Number: 56041345AE
$177.70 MSRP: $270.00
You Save: $92.30 (35%)
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Product Specifications
- Other Name: Sensor-Oxygen; Oxygen Sensor, Rear Oxygen Sensor
- Position: Lower Driver Side
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2001-2003 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD, Overland 4WD, Sport 2WD, Sport 4WD | 8 Cyl 4.7L
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Jeep Grand Cherokee Oxygen Sensor Right
Part Number: 56044581AA
$92.36 MSRP: $142.00
You Save: $49.64 (35%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2004 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD, Overland 2WD, Overland 4WD | 8 Cyl 4.7L
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Jeep Grand Cherokee Oxygen Sensor Upper Right
Part Number: 56041941AA
$148.90 MSRP: $224.00
You Save: $75.10 (34%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor, Oxygen Sensor
- Position: Upper Passenger Side
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2001-2003 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD, Overland 4WD, Sport 2WD, Sport 4WD | 8 Cyl 4.7L
View related parts
Jeep Grand Cherokee Oxygen Sensor Rear
Part Number: 5139021AA
$114.00 MSRP: $172.00
You Save: $58.00 (34%)
ADD TO CART
Product Specifications
- Other Name: Sensor Package Oxygen; Oxygen Sensor, Rear Oxygen Sensor
- Position: Rear
- Replaces: 56044598AA
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2004 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD | 6 Cyl 4.0L
View related parts
Jeep Grand Cherokee Oxygen Sensor
Part Number: 56041731AA
$147.52 MSRP: $224.00
You Save: $76.48 (35%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Rear Oxygen Sensor
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2001-2003 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD, Overland 4WD, Sport 2WD, Sport 4WD | 8 Cyl 4.7L
View related parts
Jeep Grand Cherokee Oxygen Sensor
Part Number: 56041943AA
$192.23 MSRP: $290.00
You Save: $97.77 (34%)
ADD TO CART
Product Specifications
- Other Name: Sensor-Oxygen; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2003 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD, Sport 2WD, Sport 4WD | 6 Cyl 4.0L
- 2001 Jeep Grand Cherokee | Laredo 2WD, Laredo 4WD, Limited 2WD, Limited 4WD | 6 Cyl 4.0L

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Jeep Grand Cherokee Oxygen Sensor Parts Questions & Experts Answers

Oxygen Sensor
5149170AA
Q: How Does the Oxygen Sensor in the Exhaust System Work?
A: The oxygen sensor in the exhaust system reacts with the elements to produce a voltage output that varies based on the amount of oxygen in the exhaust. This feedback signal is used by the PCM to determine the required fuel injector pulse width and control the air/fuel ratio. The ideal ratio for emissions, fuel economy, and engine performance is 14.7:The post-converter oxygen sensor monitors the efficiency of the Catalytic Converter. The configuration of the oxygen sensor varies depending on the model and emissions package. The sensor operates correctly when there are good electrical connections, proper air circulation, correct operating temperature, and unleaded fuel. The PCM can detect sensor problems and set Diagnostic Trouble Codes. To replace the sensor, raise the vehicle, locate the sensor and disconnect it, remove the sensor using a wrench or socket, clean the threads, and apply anti-seize compound if necessary. Installation is the reverse of removal.