P0141 2010 Ford Fusion Code - O2 Heater Circuit Bank 1 Sensor 2

P0141 indicates an issue with the oxygen sensor heater circuit in Bank 1 Sensor 2. The heater is not functioning properly, which affects the sensor's performance.

Common symptoms include the check engine light turning on, increased fuel consumption, and possibly failing an emissions test. You may not notice significant drivability issues.

Potential causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or a malfunctioning powertrain control module (PCM).

Bank 1 Sensor 2 is the downstream O2 sensor located after the catalytic converter on the side of the engine with cylinder 1.

Yes, you can drive the vehicle, but it may consume more fuel and fail an emissions test. Long-term neglect can lead to further damage.

Start by inspecting and repairing damaged wiring or connectors. If the wiring is fine, replacing the downstream oxygen sensor (Bank 1 Sensor 2) is often the solution.

Replacing the oxygen sensor typically costs $100–$300, including parts and labor. Additional repairs, like addressing wiring issues, may increase costs.

Use a scan tool to confirm the code, then check the oxygen sensor heater circuit for proper voltage and continuity. Inspect wiring, fuses, and connections for damage.

A failing catalytic converter is unlikely to directly cause P0141, as the code specifically relates to the heater circuit in the oxygen sensor.

Clearing the code will turn off the check engine light temporarily, but the issue will return unless the underlying problem with the oxygen sensor heater circuit is resolved.