P0141 Code – Meaning, Causes, Symptoms (& How To Fix)

You can make the code scanner your best friend by placing the Check Engine Light (on the dashboard) The OBD-II scanner may reveal the P0141 Code, but what exactly does it mean?

We will be looking at P0141's causes, symptoms, and meaning in this guide. With this information, you’ll be able to figure out the most appropriate fix to turn that light off once again. 

Definition of the code P0141

P0141 – O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

What does the P0141 code mean?

The Oxygen Sensor Circuit Malfunction on Bank 1 Sensor 2 is P0141 DTC. It shows that the onboard heater circuit isn’t operating normally on the downstream oxygen sensor from bank 1. A fault in the heater system causes the PCM to set the P0141 troublecode. 

This generic code for trouble is identical to P0135 except it's found in bank 1 sensor 1. The oxygen sensor heater will reach the operating temperature and the sensor switches to normal operation. It is the PCM that tracks the time it takes for this process to start. If it takes too much time, the PCM will set the P0141 codes. In rare cases,  a faulty PCM can cause a false code, but there will likely be others as well. 

RELATED: Bank 1 vs Bank 2 – Sensor 1 & 2 (Locate O2 Sensors)

Trouble code P0141 Symptoms

P0141 Trouble code can only lead to an engine light. Overall, there shouldn’t be any major symptoms occurring, which gives drivers a false sense of security.

Below are symptoms of the P0141 DTC.

What causes the P0141 Code?

Because the code relates to the oxygen sensor, it’s most common that this part needs to be replaced. However, the only way to determine what’s going on is to do a proper diagnosis.

Below are the top P0141 DTC reasons:

What is the P0141 code?

Medium – Because there are only a few symptoms noticed with the P0141 DTC, it’s common to keep driving with this code on. But, this idea has its problems.

First, with the Check Engine Light on, it’s tough to tell if anything else is going wrong. Driving with an imbalance can cause other damage that will eventually cost more. 

Which Repairs can Fix the Code P0141

You should now be able figure out what the correct fix is after a comprehensive diagnosis. Below are some suggestions to assist you in your search.

Take a look at these P0141-code fixes.

• Replace oxygen sensor 
• Reconnect damaged wires and circuits
• Replace the fuse
• Upgrade/replace the PCM 

Common mistakes in diagnosing P0141

Searching online for the reason behind the P0141 problem code will yield a large number of websites claiming that the catalytic conversion could be the culprit. Even reputable sites are sharing this data, which isn’t accurate.

In most cases, the catalytic converter isn’t going to cause this code to set. If the converter malfunctions, P0420 would be displayed in the code scanner. 

How to diagnose P0141 Trouble code

Even if you aren’t a professional mechanic, we can help you figure out what’s going on. With some simple tools and a minimal amount of expertise, you can get to the bottom of what’s going on. Follow all of the guidelines that are set in your car’s service manual.

These steps can be done in addition to what is described in the manual.

1. Look for any codes in the engine. You should first look for codes other than P0141. 
2. You should inspect the connectors and wiring around the oxygen sensor. If there’s any damage, you want to repair this.
3. You can test the oxygen sensor with a multimeter. Disconnect the sensor’s harness connector before you turn ON the ignition. Don’t start the engine. Use your multimeter to test the voltage of the oxygen sensor. You can find the proper specifications in your car’s service manual.
4. You should check that the fuse is working if voltage does not reach the oxygen heating circuit.
5. Check the ground connection to your engine if all is well. You could have a loose connection or corrosion. 

These are just a few of the steps. To continue, you need to get help from a mechanic. Certified mechanics should do any repairs or replace the PCM. 

Projected Repair Costs of P0141

You should now know the exact repair that is required after your diagnostics are complete. If you can’t perform the repair yourself, you will need to pay for parts and labor. These charges are based upon the most frequent fixes. 

• Replace oxygen sensor – $125-$450
• Repair damaged circuit, wiring or connections – $50-$550
• Update/replace PCM – $250-$2,500

Here are some mechanics tips about the P0141 code

A blown fuse in the oxygen heating circuit can trigger this code. It is usually not sufficient to simply replace the fuse. It’s almost always blown either by a bad oxygen sensor or a short circuit in the wirings.

Multiple trouble codes can be closely linked to the P0141 DTC. These codes are all related, but each has its own meaning and fix. That’s why each needs to be dealt with separately.

If you aren’t sure what these codes mean, go ahead and research them on our site. To help you repair your vehicle on your own, we have extensive trouble codes guides.