What are the common symptoms of a failing Oxygen O2 Sensor in the Toyota Prius?

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What are the common symptoms of a failing Oxygen O2 Sensor in the Toyota Prius?

The oxygen sensor plays a crucial role in fuel efficiency and emissions.
Symptoms of failure include decreased fuel economy, rough idling, and increased exhaust emissions.
How can Prius owners clean o r replace an O2 sensor, and where can they buy genuine replacements in Pakistan?

Lubaba asked on 15 Feb 2025 14:41:15 pm

1 Answer

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Car Mechanic Expert - on 15 Feb 2025 14:50:25 pm

Symptoms: Decreased fuel economy, rough idling, increased exhaust emissions, and poor engine performance such as sluggish acceleration.
Repair: To clean o r replace the O2 sensor, owners should locate it in the exhaust system, remove it, and clean it using an O2 sensor cleaner. If cleaning doesn’t help, replacement is necessary. Genuine replacements can be sourced from Toyota dealerships o r reputable auto parts shops in major cities like Lahore, Karachi, and Islamabad.