P0032 Code: HO2S Heater Control Circuit High (Bank 1 Sensor 1)

The code P0032 is triggered when the PCM detects a problem in the operation of the heater element of an oxygen sensor located in Bank 1, the side of the engine with cylinder #1. Here’s a quick rundown of what you need to know if your vehicle has logged this OBD-II code.

What Does the P0032 Code Mean?

Diagnostic trouble code (DTC) P0032 code stands for “HO2S Heater Control Circuit High (Bank 1 Sensor 1).”

Note that you won’t get this code on most vehicles; it’s only in the code list for a few.

An oxygen sensor has a heater element that allows it to quickly come up to 600°Fto produce accurate readings. The code P0032 is set by the PCM when it detects that the heater control circuit exceeded its high voltage limit. You can learn more about the o2 sensor heating process here.

If you’re trying to locate Bank 1 Sensor 1, our explanation here should help you.

Error code P0032 is similar to codes P0031 (HO2S Heater Control Circuit Low), P0051 (HO2S Heater Control Circuit Low), and P0052 (HO2S Heater Control Circuit High).

Note: The definition of code P0032 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

What are the Possible Causes of the P0032 Code?

• A failed O2 sensor 
• Wiring or connectors (to the sensor and/or relay) are loose, broken, or frayed
• PCM/ECM issues 

What are the Common Symptoms of the P0032 Code?

• Check Engine Light will illuminate
• Reduced engine performance
• Increased fuel consumption

How to Diagnose the P0032 Code

Identifying the underlying cause of the P0032 code can be difficult, especially if you’re not confident with your automotive knowledge or if your garage is not equipped with all the required tools. In most cases, it would be best to bring your vehicle to an auto repair shop and seek the help of a professional for an accurate diagnosis.

Here are is a video that can help give you an idea about how this trouble code might be diagnosed:

How to Fix the P0032 Code

The P0032 code is a generic trouble code that may apply to various makes and models. While vehicles from different manufacturers may share common symptoms, the steps for diagnosis and repair for a P0032 Dodge code may differ from a P0032 Jeep code.

If you’re an advanced DIYer who’d like to fix this code on your own, it will be helpful to refer to your repair manual or get factory vehicle repair information from an online subscription service.

Getting Your Hands on a Replacement O2 Sensor to Fix P0032

As mentioned above, one of the ways to resolve this trouble code is to replace your vehicle’s faulty O2 sensor. Keep in mind that this will only work if the sensor itself is malfunctioning or failing. The great news is that it only takes a few clicks to find an OE-grade replacement at CarParts.com.

We only offer oxygen sensors that pass the highest quality control standards to ensure you get one that’s built to last. Our selection also includes accurate and detailed fitment information to help you get exactly what your car needs to get back on the road.

You don’t even have to visit several auto parts stores to find a replacement O2 sensor for your ride. With your mobile device or computer, you can visit our website and use our vehicle selector to find compatible parts. Then, find the sensors that match your preferred brand, price, and features with our filters.

To give you the best value for money, we offer our O2 sensors at competitive prices. Shop and take advantage of our best deals today.

Products Mentioned in this Guide

Oxygen Sensor Engine Control Module