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.
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HOMESERVICE MANUALSFORD2007FIVE HUNDRED 2WD V6-3.0L VIN 1REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSOXYGEN SENSORSERVICE AND REPAIRCATALYST MONITOR SENSOR
2007 Ford Five Hundred 2WD V6-3.0L VIN 1
Catalyst Monitor Sensor
2007 Ford Five Hundred 2WD V6-3.0L VIN 1SECTION Catalyst Monitor Sensor
CATALYST MONITOR SENSOR
Exploded View
Special Tool(s)
Removal and Installation
1. With vehicle in NEUTRAL, position it on a hoist.
2. Disconnect the battery ground cable.
3. Disconnect the catalyst monitor sensor (CMS) electrical connector.
4. NOTE: If necessary, lubricate the CMS with lock lubricant to aid in removal.
Using the special tool, remove the CMS from the exhaust and discard.
- To install, tighten to 48 Nm (35 lb-ft).
5. NOTE: Do not reuse CMS. If removed, a new sensor must be installed.
To install, reverse the removal procedure.
- Apply a light coat of anti-seize lubricant to the threads of the CMS.
Exploded View
Special Tool(s):
Special Tool(s)
Removal and Installation
1. With vehicle in NEUTRAL, position it on a hoist.
2. Disconnect the battery ground cable.
3. Disconnect the catalyst monitor sensor (CMS) electrical connector.
4. NOTE: If necessary, lubricate the CMS with lock lubricant to aid in removal.
Using the special tool, remove the CMS from the exhaust and discard.
- To install, tighten to 48 Nm (35 lb-ft).
5. NOTE: Do not reuse CMS. If removed, a new sensor must be installed.
To install, reverse the removal procedure.
- Apply a light coat of anti-seize lubricant to the threads of the CMS.
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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.