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.
2009 Jeep Compass 2WD L4-2.0LFACTORY OEM SERVICE PROCEDURE
Removal
2.0, 2.4L FWD
DOWNSTREAM OXYGEN SENSOR (1/2)
WARNING: THE EXHAUST MANIFOLD, EXHAUST PIPES AND CATALYTIC CONVERTER(S) BECOME VERY HOT DURING ENGINE OPERATION. ALLOW ENGINE TO COOL BEFORE REMOVING OXYGEN SENSOR. FAILURE TO ALLOW ENGINE TO COOL BEFORE REMOVAL MAY RESULT IN PERSONAL INJURY CAUSED BY BURNS.
CAUTION: When disconnecting sensor electrical connector, do not pull directly on wires going into oxygen sensor. Damage to the oxygen sensor may occur.
NOTE: Use an oxygen sensor (O2S) removal tool for this procedure.
1. Raise and support vehicle.
2. Disconnect O2S wire harness mounting clips from engine or body, if equipped.
3. Disconnect O2S pigtail harness connector (1) from engine wiring harness.
4. Remove the O2S (3) from catalytic converter (2).
UPSTREAM OXYGEN SENSOR (1/1)
WARNING: THE EXHAUST MANIFOLD, EXHAUST PIPES AND CATALYTIC CONVERTER(S) BECOME VERY HOT DURING ENGINE OPERATION. ALLOW ENGINE TO COOL BEFORE REMOVING OXYGEN SENSOR. FAILURE TO ALLOW ENGINE TO COOL BEFORE REMOVAL MAY RESULT IN PERSONAL INJURY CAUSED BY BURNS.
CAUTION: When disconnecting sensor electrical connector, do not pull directly on wires going into oxygen sensor. Damage to the oxygen sensor may occur.
NOTE: Use an oxygen sensor (O2S) removal tool for this procedure.
1. Raise and support vehicle.
2. Disconnect O2S wire harness mounting clips from engine or body, if equipped.
3. Disconnect O2S pigtail harness connector (1) from engine wiring harness.
4. Remove the O2S (3) from exhaust pipe (2).
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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