Where is the oxygen sensor located on a Ford Edge?
The oxygen sensors on most Ford Edge models sit along the exhaust system, providing real-time feedback to the engine computer to optimize fuel mixture. In typical configurations, you’ll find four sensors: two upstream before the catalytic converter and two downstream after it, one on each exhaust bank.
What the oxygen sensors do
Oxygen sensors monitor the amount of oxygen in the exhaust and help the engine control unit adjust air–fuel ratio for efficiency and emissions. Upstream sensors (pre-cat) feed data to set the correct mixture, while downstream sensors (post-cat) monitor catalytic converter performance and help verify the converter is doing its job.
Where they are located on the Ford Edge
The following outline describes the typical placements. Exact positions can vary by model year and engine configuration, so consult your service manual for your specific vehicle.
Upstream (pre-cat) sensors:
- Bank 1 Upstream (Sensor 1): Located on the driver’s side exhaust manifold area, near the engine, before the catalytic converter.
- Bank 2 Upstream (Sensor 2): Located on the passenger side exhaust manifold area, before the catalytic converter.
Downstream (post-cat) sensors:
- Bank 1 Downstream (Sensor 3): Mounted in the exhaust pipe after the catalytic converter on the driver’s side path.
- Bank 2 Downstream (Sensor 4): Mounted in the exhaust pipe after the catalytic converter on the passenger side path.
Note: The exact bank designations (Bank 1 vs Bank 2) correspond to cylinder arrangement and can vary by engine. In many Ford V6 applications, Bank 1 aligns with the driver’s side. The sensors are threaded into the exhaust and are connected by wiring harnesses routed up toward the engine bay, often protected by heat shields.
Variations by year and engine
V6-powered Edge (common in older generations)
Most V6 Edge models feature four O2 sensors: two upstream and two downstream, one pair on each bank. The upstream sensors are closest to the engine, while the downstream sensors sit after each catalytic converter along the exhaust path.
Four-cylinder or turbo variants
Some Edge configurations with smaller or turbocharged engines follow the same two-upstream, two-downstream layout, though the exact bolt positions can shift with different exhaust routing. Always verify with the factory manual for your exact year and engine code.
What to do if you’re inspecting or replacing sensors
When inspecting or replacing O2 sensors, ensure the vehicle is safely supported if you’ll be underneath it. Disconnect the battery before disconnecting sensor electrical connectors, and use anti-seize compound sparingly on sensor threads if you’re reseating sensors (per manufacturer guidance). If you’re unsure, a professional mechanic can identify the correct sensors for your VIN and engine code.
Summary
In most Ford Edge models, the oxygen sensor layout follows a four-sensor configuration: two upstream sensors before the catalytic converters and two downstream sensors after them, one on each exhaust bank. Locations are typically on the exhaust manifolds near the engine (upstream) and on the exhaust pipes after the catalysts (downstream). Always confirm exact positions for your specific year and engine by consulting the owner’s manual or a service manual.
