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In the Ford Fiesta, the O2 sensor on Bank 1 is located before the catalytic converter and close to engine cylinder #1. Additional sensors are then placed after the converter. These sensors are crucial for monitoring the amount of unburnt oxygen coming out of the exhaust pipes, playing a vital role in the vehicle's emission and ignition systems. The data collected is sent to the car's main computer (ECU) to help regulate the engine's air/fuel ratio. A functioning O2 sensor is key for maintaining optimal fuel efficiency and engine performance. However, if the sensors start to malfunction, it can lead to inaccurate readings, causing the vehicle to either run too rich or too lean. This can result in issues like rough idling, decreased gas mileage, and potentially misfires. On average, replacing an O2 sensor in a Ford Fiesta will cost around $170 to $180 for both the parts and labor.
The o2 sensor on a Ford Fiesta is positioned in front of the catalytic converter.
I'm experiencing an issue with the code bank 1 oxygen sensor on my 2009 Ford Fiesta 1.4 engine. This particular model is equipped with two oxygen sensors - one located on the manifold and the other near the catalytic converter. I'm now trying to determine which one is the bank one oxygen sensor.
Can you tell me the location of the bank?