how to fix a faulty oxygen sensor in Honda CR-V Fifth Generation (2017-2022)

Solution

1. Preparation

• Tools Needed: OBD-II scanner, socket set, torque wrench, multimeter, oxygen sensor socket, vehicle jack and jack stands.
• Ensure the vehicle is parked on a flat surface, the engine is cool, and disconnect the battery to prevent electrical shock.

2. Remove the Faulty Oxygen Sensor

• Locate the oxygen sensor: Identify the faulty sensor based on the diagnostic codes.
• Disconnect the wiring harness: Gently pull the connector to detach it from the sensor.
• Remove the sensor: Use an oxygen sensor socket to unscrew the sensor from its mounting location. Take care not to damage surrounding components.

3. Install the New Oxygen Sensor

• Prepare the new sensor: Apply anti-seize compound to the threads of the new oxygen sensor if required.
• Install the new sensor: Screw the new sensor into place, hand-tightening first, then use the oxygen sensor socket to tighten to the manufacturer's specifications (typically around 30 lb-ft).
• Reconnect the wiring harness: Ensure the connector clicks into place securely.

4. Reconnect the Battery and Test

• Reconnect the vehicle battery.
• Clear any error codes using the OBD-II scanner.
• Start the engine and let it idle for a few minutes to ensure proper functioning.