P1035 code — how to fix error fast

Facing an OBD2 code like P1035 can be worse than you think, especially if you choose to ignore the code and keep driving your car regularly. Most of the OBD2 codes that are marked with the letter “P” have something to do with the powertrain, but how do you know what each of them means?

Don’t worry, we get your concern which is why our team wanted you to have a complete overview of the P1035 code meaning, the most common reasons behind the code, and ways of dealing with it. We’ll discuss both diagnostic methods you can use to uncover the reason behind the code and possible solutions that could be applied when dealing with this code.

Why you can trust REREV’s OBD2 code advice: Our automotive expert researchers with experienced mechanics undertakes a thorough research methodology to deliver precise insights on OBD codes. Find out more about OBD2 codes research process..

What does the P1035 code mean?

The P1035 code stands for “Heated oxygen sensor (HO2S) 1, bank 1, heater control circuit malfunction.” In simpler terms, the code indicates that there is a problem with the vehicle’s oxygen sensor, which measures the amount of oxygen in the exhaust. The oxygen sensor sends data to the vehicle’s computer, which then adjusts the air/fuel ratio for optimal performance.

If the oxygen sensor’s heater control circuit malfunctions, the sensor may not provide accurate data, leading to reduced performance and increased emissions. The “check engine” light will illuminate to alert the driver to a potential problem.

What causes the P1035 code?

The code P1035 can be caused by a variety of things, and the best testament to that is the amount of different symptoms that may occur. For instance, your car could be idling rough, wasting more fuel, or even have increased emissions besides poor engine performance. So, here’s an overview of each of the possible causes that may lead to such symptoms and trigger the code:

Several potential causes can trigger the code. Here are some of the most common:

Faulty oxygen sensor

The most common cause of the P1035 code is a faulty oxygen sensor. Over time, the sensor may become damaged or worn, leading to inaccurate readings. In some cases, the sensor’s heater circuit may malfunction due to a wiring issue or blown fuse.

Wiring issues

Another potential cause of the P1035 code is wiring issues. If the wiring to the oxygen sensor is damaged or corroded, it may cause a malfunction in the heater circuit. This can result in inaccurate readings and trigger the check engine light.

Failed PCM

In rare cases, a failed powertrain control module (PCM) may cause the P1035 code. The PCM is the vehicle’s computer that controls various systems, including the oxygen sensor. If the PCM fails, it may send incorrect signals to the oxygen sensor, leading to the code.

Which car models does the P1035 code affect the most?

The P1035 code can affect various car models, but some are more prone to issues than others. Typically, vehicles with higher mileage and older models are more likely to experience the code. Some of the car models that may be affected by the P1035 code include:

• Nissan Altima: The Altima has been known to have issues with the oxygen sensor heater circuit, which can trigger the P1035 code.
• Honda Civic: Some Civic models have been reported to experience issues with the oxygen sensor heater circuit, which can cause the P1035 code to appear.
• Toyota Corolla:: Corollas have also been known to experience problems with the oxygen sensor heater circuit, leading to the P1035 code.

How to diagnose the P1035 code

Diagnosing requires specialized tools and expertise. Here are the steps to diagnose the code depending on the exact reason behind it:

Scan the vehicle

The first step in diagnosing the P1035 code is to scan the vehicle’s computer using an OBD-II scanner. The scanner will read the vehicle’s diagnostic trouble codes and provide a report of any issues.

Inspect the oxygen sensor

If the scanner detects the P1035 code, the next step is to inspect the oxygen sensor. Check for any signs of damage or wear. Additionally, inspect the wiring and connections to the sensor.

Test the oxygen sensor

After inspecting the oxygen sensor, the next step is to test it. This requires a multimeter to check the sensor’s voltage output. If the voltage is out of range, it may indicate a faulty sensor.

Check the heater circuit

If the oxygen sensor tests positive, the next step is to check the heater circuit. This requires a wiring diagram and a multimeter to check for continuity in the circuit. If the circuit is open, it may indicate a wiring issue.

Inspect the PCM

If all other tests are negative, the final step is to inspect the PCM. This requires specialized equipment and expertise to diagnose and repair.

How to fix the P1035 code

Fixing requires addressing the underlying issue that triggered the code. Here are some potential fixes:

Replace the oxygen sensor

If the oxygen sensor is faulty, it may need to be replaced. This is a relatively simple and inexpensive fix that can improve the vehicle’s performance and reduce emissions. Replacing the sensor can range from around $50 to $120 depending on the model of your car.

Repair wiring issues

If the issue is due to wiring problems, repairing or replacing the damaged wiring may be necessary. If you aren’t experienced enough in doing so, you should entrust this task to a mechanic with enough experience and expertise, and you won’t even have to pay too much for this repair.

Replace the PCM

In rare cases, a failed PCM may need to be replaced. This is a complex and expensive fix that requires specialized equipment and expertise.

How to prevent the P1035 code

Preventing requires proper maintenance and care of the vehicle. Here are some preventative measures:

• Regular oil changes
• Checking the oxygen sensor and exhaust system components
• Driving at a steady speed
• Prevent overloading your vehicle

By applying these steps, you can ensure that the code remains under control and you won’t have to deal with it again after properly removing and clearing it.

Our take

Ultimately, the code P1035 can be a pretty difficult one to address due to all the possible reasons behind it. It’s not simply enough to replace the oxygen sensor and keep driving after clearing the code. You have to come at it prepared, and that’s hopefully just what this guide will help you do as well as prevent the code from re-appearing in your car.