Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2006 Chrysler PT Cruiser Base, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE

O2 Sensor: Description

Fig 1: Upstream Heated Oxygen Sensor 1/1

Courtesy of DAIMLERCHRYSLER CORP.

1 - OXYGEN SENSORS

2 - EXHAUST MANIFOLD

The upstream oxygen sensor threads into the outlet flange of the exhaust manifold.

Fig 2: Downstream Heated Oxygen Sensor 1/2

Courtesy of DAIMLERCHRYSLER CORP.

The downstream heated oxygen sensor threads into the system depending on emission package.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.