How to Replace the Downstream Heated Oxygen Sensor in a 2.4L Engine on Chrysler PT Cruiser?

The 24-valve engine uses a heated oxygen sensor that is found downstream in the exhaust pipe past the catalytic converter. First, reach in and take out the sensor, then use the 18 mm X 1.5 + 6E tap to clean the exhaust manifold threads. For those reusing a sensor, apply some Loctite(R) 771-64 to the threads. Since new sensors are already protected, you don't need to add anything to them. Torque the sensor to a value of 41 Nm or 30 ft. lbs. After that, plug the vehicle's electrical harness into the sensor, then connect the sensor to the clips fixed on the vehicle's body. After that, set down the vehicle, connect the negative battery cable and finish by installing the air cleaner lid and makeup air hose.

How to Maintain the Oxygen Sensor on a 2.4L Turbo Engine on Chrysler PT Cruiser?

Begin by disconnecting the negative battery cable and after that, unlock the connector on the passenger side next to the EVAP purge solenoid. Raise the vehicle and attach an oxygen sensor crow foot wrench, for instance Snap-On tool YA8875, before removing the sensor. In order to install the O2 sensor, you should tighten it with a wrench sufficient for the job to Nm 28 (20 ft. lbs.). Direct the oxygen sensor electrical wire above the heat guard for the generator, but not near the exhaust manifold. After you lower the vehicle, connect and lock the O2S connector on the passenger side beside the EVAP purge solenoid and finish your work by looping the negative battery cable back.

OEM Chrysler PT Cruiser Oxygen Sensor

Oxygen O2 Sensor

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6 Oxygen Sensors found

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Chrysler PT Cruiser Oxygen Sensor, Front Part Number: 56029050AA
$77.38 MSRP: $114.00
You Save: $36.62 (33%)
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Product Specifications
- Other Name: Sensor - Oxygen; Oxygen Sensor, Front, Front Right, Rear, Rear Left, Rear Right; Rear Oxygen Sensor; Front Oxygen Sensor; Lower Oxygen Sensor; Sensor Oxygen
- Position: Front
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2005-2010 Chrysler PT Cruiser | Base, Classic, Couture Edition, Dream Cruiser, GT, LX, Limited, Street Cruiser, Touring | 4 Cyl 2.4 L GAS
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Chrysler PT Cruiser Oxygen Sensor, Front Driver Side Part Number: 56029049AA
$97.32 MSRP: $144.00
You Save: $46.68 (33%)
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Product Specifications
- Other Name: Sensor - Oxygen; Oxygen Sensor, Front, Front Left, Front Right, Rear, Rear Left, Rear Right; Rear Oxygen Sensor; Front Oxygen Sensor; Upper Oxygen Sensor; Lower Oxygen Sensor; Sensor Oxygen
- Position: Front Driver Side
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2005-2010 Chrysler PT Cruiser | Base, Classic, Couture Edition, Dream Cruiser, GT, LX, Limited, Street Cruiser, Touring | 4 Cyl 2.4 L GAS
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Chrysler PT Cruiser Oxygen Sensor, Front Part Number: 5033758AA
$113.06 MSRP: $143.33
You Save: $30.27 (22%)
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Product Specifications
- Other Name: Oxygen; Oxygen Sensor, Front; Sensor Oxygen
- Position: Front
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2001-2002 Chrysler PT Cruiser | Base, Dream, Limited, Touring | 4 Cyl 2.4 L GAS
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Chrysler PT Cruiser Oxygen Sensor Part Number: 5033500AA
Product Specifications
- Other Name: Sensor - Oxygen; Sensor Oxygen
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2003-2004 Chrysler PT Cruiser | Base, GT, Limited, Touring | 4 Cyl 2.4 L GAS
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Chrysler PT Cruiser Oxygen Sensor, Rear Part Number: 5033200AA
Product Specifications
- Other Name: Sensor - Oxygen; Oxygen Sensor, Rear; Sensor Oxygen
- Position: Rear
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2003-2004 Chrysler PT Cruiser | Base, GT, Limited, Touring | 4 Cyl 2.4 L GAS
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Chrysler PT Cruiser Oxygen Sensor, Rear Part Number: 5033039AA
Product Specifications
- Other Name: Sensor - Oxygen; Oxygen Sensor, Rear; Sensor Oxygen
- Position: Rear
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2001-2002 Chrysler PT Cruiser | Base, Dream, Limited, Touring | 4 Cyl 2.4 L GAS

Chrysler PT Cruiser Oxygen Sensor

Choose OEM Oxygen Sensor that meet Chrysler factory standards. Chrysler designs and tests every component for precision and durability. Each Oxygen Sensor follows strict manufacturing steps to lock in quality and fit. If your Chrysler PT Cruiser matters to you, OEM parts make the smart choice. You'll get the exact look, feel, and performance you expect. Shop genuine PT Cruiser parts at the highly competitive prices online. Enjoy a manufacturer's warranty, a hassle-free return policy, and rapid delivery. No more guesswork with off brands. Get genuine parts with exact fit and true factory performance. Shop with confidence today at JeepPartsDeal.com.

The Oxygen Sensor is an important component located in Chrysler PT Cruiser vehicles which is responsible to measure the flow of unburned oxygen being emitted in the exhaust so that the engine control computer can adjust the air-fuel mixture ratio for higher efficiency and less emissions. Through this voltage signal proportional to oxygen concentration, the sensor allows the engine to work in 'closed loop' which is important to sustain the efficiency of the catalytic converter. As for the Chrysler PT Cruiser variants, it is quite probable that they enlisted zirconium dioxide oxygen sensors with a possibility of both the narrow-band and the wide-band variants. The narrow-band sensors output provide cycling rich/lean signals and on the other hand, the wide-band sensors give continuously varying signals of air-fuel mixtures. At times, these sensors may wear out owing to contamination and hence cause emissions of more fuel and reduced fuel efficiency.

Chrysler PT Cruiser Oxygen Sensor Parts and Q&A

Oxygen Sensor, Front Driver Side
56029049AA
Q: How to Replace the Downstream Heated Oxygen Sensor in a 2.4L Engine on Chrysler PT Cruiser?
A:
The 24-valve engine uses a heated oxygen sensor that is found downstream in the Exhaust Pipe past the Catalytic Converter. First, reach in and take out the sensor, then use the 18 mm X 1.5 + 6E tap to clean the Exhaust Manifold threads. For those reusing a sensor, apply some Loctite(R) 771-64 to the threads. Since new sensors are already protected, you don't need to add anything to them. Torque the sensor to a value of 41 Nm or 30 ft. lbs. After that, plug the vehicle's electrical harness into the sensor, then connect the sensor to the clips fixed on the vehicle's body. After that, set down the vehicle, connect the negative Battery Cable and finish by installing the air cleaner lid and makeup air hose.
Oxygen Sensor, Front
56029050AA
Q: How to Maintain the Oxygen Sensor on a 2.4L Turbo Engine on Chrysler PT Cruiser?
A:
Begin by disconnecting the negative Battery Cable and after that, unlock the connector on the passenger side next to the EVAP purge solenoid. Raise the vehicle and attach an oxygen sensor crow foot wrench, for instance Snap-On tool YA8875, before removing the sensor. In order to install the O2 sensor, you should tighten it with a wrench sufficient for the job to Nm 28 (20 ft. lbs.). Direct the oxygen sensor electrical wire above the heat guard for the generator, but not near the Exhaust Manifold. After you lower the vehicle, connect and lock the O2S connector on the passenger side beside the EVAP purge solenoid and finish your work by looping the negative battery cable back.