P2099 2010 FORD FUSION - Post Catalyst Fuel Trim System Too Rich Bank 2
Tech notesBefore replacing the Heated Oxygen Sensor, inspect the sensor connector for signs of damage, water ingress, or corrosion
P2099 2010 Ford Fusion DescriptionThe Powertrain Control Module (PCM) monitors the correction value from downstream Heated Oxygen Sensor (HO2S) as part of the fore-aft oxygen sensor control routine. The test fails when correction value is greater than a calibrated limit.
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