What are the symptoms of a failing oxygen O2 sensor in Honda City?

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What are the symptoms of a failing oxygen O2 sensor in Honda City?

The oxygen sensor O2 sensor plays a crucial role in optimizing fuel mixture and emissions. What are the common symptoms of a faulty O2 sensor, such as reduced fuel efficiency, rough idling, o r check engine light activation? How can Honda City owners diagnose and replace it?

Sandeep asked on 04 Mar 2025 11:55:18 am

1 Answer

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Car Mechanic Expert - on 04 Mar 2025 12:20:08 pm

A faulty oxygen O2 sensor in the Honda City can result in several noticeable symptoms. One of the most common signs is a reduced fuel efficiency. Since the O2 sensor plays a vital role in regulating the fuel-to-air ratio, a malfunctioning sensor can cause the engine to run too rich o r too lean, leading to excessive fuel consumption. Another sign is rough idling o r inconsistent engine performance, as the sensor fails to provide accurate data for the engine control unit ECU. If the O2 sensor is failing, the check engine light CEL will often illuminate on the dashboard. Other symptoms include engine misfires, poor acceleration, o r a noticeable decrease in power. To diagnose the issue, Honda City owners can use an OBD2 scanner to check for fault codes related to the O2 sensor. If a faulty sensor is confirmed, replacing it with a new one will restore the vehicle’s performance.