P0163 OBD-II: O2 Sensor Circuit Low Voltage

P0163 Severity

Moderate

Will P0163 go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.

Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

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What causes OBD-II fault code P0163?

The purpose of the oxygen sensor is to measure the oxygen content in the exhaust gases after they leave the combustion process of the engine. This information is critical to the PCM's ability to maintain efficient fuel economy. When the PCM detects a failure of the sensor or the information received from the sensor, it will set code P0163.

What Does P0163 Code Mean?

OBD-II Code P0163 is defined as a O2 Sensor Circuit Low Voltage

P0163 Symptoms

Decreased engine performance
Increased fuel consumption

Common Problems That Trigger the P0163 Code

Exhaust leak
Oxygen sensor failure
Powertrain Control Module (PCM) failure
Wiring issue

Common Repairs Needed for the P0163 Code

Oxygen Sensor Replacement

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