P0141 OBD-II: O2 Sensor Heater Circuit

P0141 Severity

Moderate

Will P0141 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 P0141?

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. The oxygen sensor must be at a certain temperature in order for this information to be accurate. The oxygen sensor has a heater wire inside to help bring the sensor up to temperature quicker. When the PCM detects the heater wire is not operating, it will set code P0141.

What Does P0141 Code Mean?

Fault Code Definition

The Catalyst Monitoring Oxygen Sensor evaluates the rear most Catalytic Converter's emissions-reducing capability. Code P0141 is set when the Rear Oxygen Sensor does not show signal activity indicative of closed loop fuel system operation within the required time.

P0141 Symptoms

Check Engine Light will illuminate
In many cases, no abnormal symptoms may be noticed
In some cases, the vehicle will fail an Emissions Test
In many cases, the NOx emissions will be elevated

Common Problems That Trigger the P0141 Code

Defective Rear Most Oxygen Sensor
Faulty Rear Most Oxygen Sensor wiring or connections

Common Misdiagnoses

Oxygen Sensor Sensor is replaced when the problem is a defective Catalytic Converter
Oxygen Sensor is replaced when the problem is faulty sensor wiring or connections
Oxygen Sensor is replaced when the problem is an exhaust leak before the Rear Oxygen Sensor

OBD Code Resources

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What Does P0141 Code Mean?

Fault Code Definition

P0141 Symptoms

Check Engine Light will illuminate
In many cases, no abnormal symptoms may be noticed
In some cases, the vehicle will fail an Emissions Test
In many cases, the NOx emissions will be elevated

Common Problems That Trigger the P0141 Code

Defective Rear Most Oxygen Sensor
Faulty Rear Most Oxygen Sensor wiring or connections

Common Misdiagnoses

Oxygen Sensor Sensor is replaced when the problem is a defective Catalytic Converter
Oxygen Sensor is replaced when the problem is faulty sensor wiring or connections
Oxygen Sensor is replaced when the problem is an exhaust leak before the Rear Oxygen Sensor

P0141 OBD-II: O2 Sensor Heater Circuit

Will P0141 go away on its own?

What causes OBD-II fault code P0141?

Need a P0141 diagnosis? Trust our experts.

What Does P0141 Code Mean?

Fault Code Definition

P0141 Symptoms

Common Problems That Trigger the P0141 Code

Common Misdiagnoses

OBD Code Resources

Need a P0141 diagnosis? Trust our experts.

Ask our experts about P0141.

Other OBD-II Codes

What Does P0141 Code Mean?

Fault Code Definition

P0141 Symptoms

Common Problems That Trigger the P0141 Code

Common Misdiagnoses