harley code p0132

Harley Code P0132 – Causes, Symptoms, and Fixes

As an iconic leader in the motorcycle industry, Harley Davidson offers some of the most dependable models available. Yet even their superior craftsmanship can be susceptible to disruptions, and one such problem is a Check Engine Light (CEL) with Harley code P0132.

In this article, we’ll be exploring the mysterious P0132 code and its culprits: a faulty oxygen sensor in Bank 1 Sensor 1. Learn more about its causes, symptoms, and solutions for fixing it so you can get your Harley back on track.

Understanding Harley Code P0132

Harley Code P0132 signals to the power control module that there is an anomaly in bank 1’s sensor 1 oxygen sensor. This particular device calculates how much oxygen exists within exhaust gas and modifies the fuel/air combination accordingly allowing for optimal engine performance.

The oxygen sensor is the key to regulating an ideal air/fuel mixture ratio, as it will detect when a high voltage occurs and alert the PCM to increase fuel supply. Conversely, if low voltage is detected, then the PCM will reduce its delivery of fuel accordingly.

If the Powertrain Control Module (PCM) identifies a fault in the oxygen sensor’s heating system, it will throw off a P0132 code. Generally speaking, complications with the heat cycle are to blame for this diagnostic trouble code; nonetheless, other factors can trigger it too.

Causes of Harley Code P0132

Here are some of the most common causes of Harley Code P0132:

Short in the Oxygen Sensor Heater Circuit

The PCM will generate a P0132 code if the voltage reading from the oxygen sensor is too high or low, primarily due to shorting in its heating circuit. This is one of the most common reasons for this particular error code.

Exposed or Broken Wires

If the wiring leading to an oxygen sensor is exposed or damaged, it can cause a voltage anomaly that signals P0132. This disturbance in readings will set off alerts of possible problems.

High Fuel Temperature

In unusual circumstances, a high fuel temperature can trigger the PCM to register the P0132 code. When temperatures exceed what the sensor is capable of measuring, readings from the oxygen sensors become inaccurate and cause the onboard computer system to alert you with this particular error code.

Symptoms of Harley Code P0132

Here are some of the most common symptoms of Harley Code P0132:

Check Engine Light

When something isn’t right with the oxygen sensor’s heating circuit, the Powertrain Control Module (PCM) will activate your Check Engine Light as a warning that there is an issue with your car’s emissions system.

Increased Fuel Consumption

If the oxygen sensor is not working correctly, it can cause an incorrect air/fuel ratio. This can lead to higher fuel consumption and thus more costs for the driver.

Engine Cutting Off

In extreme cases, the engine may shut down as a result of an inaccurate air/fuel ratio, which can lead to serious safety hazards while driving.

Fixing Harley Code P0132

Here are some of the ways to fix Harley Code P0132:

Repair or Replace Broken or Exposed Wires

Before replacing the oxygen sensor, check its wiring for any breaks or exposed areas. If you spot these issues, repair or replace them first before proceeding with a new oxygen sensor. Inspecting the wires is vital to ensure that they are functioning correctly and will not affect your vehicle’s performance in any way.

Replace the Oxygen Sensor

If the wiring appears to be in satisfactory condition, then it’s time to switch out the oxygen sensor. This procedure should only be done by an experienced mechanic as it requires carefully removing and installing the sensor correctly.

Check for High Fuel Temperature

If the PCM emits P0132 due to excessive fuel temperature, it is essential to inspect and repair the origin of this overheating for a lasting fix.

Harley Code P0132 Diagnosis

In some cases, aftermarket modifications such as Freedom Performance Headers and V&H High Output mufflers can damage the oxygen sensor. That’s because they alter airflow and exhaust gas flow which causes incorrect readings from the oxygen sensor. As evidenced by a case study mentioned earlier, this type of problem is not uncommon.

To accurately diagnose the P0132 code, a mechanic will first utilize an OBD-II scanner to capture freeze frame data and any associated trouble codes from the power control module (PCM). Afterward, they’ll reset the P0132 trouble code which should in turn deactivate the Check Engine Light. In order to complete their assessment of this issue, they’ll go for a test drive with you and observe whether or not that same code returns along with its accompanying light.

Following that, they’ll use an OBD-II scanner to take a look at the live data and inspect the voltage levels connected to the oxygen sensor in order to guarantee it is working correctly. They will also examine the wiring of this component for any exposed or damaged wires. Generally speaking, swapping out the old part with a new one should do away with this P0132 fault code from your PCM.

Avoiding additional repairs and saving time & money down the road is a breeze when you take care to inspect your oxygen sensor wiring for broken or exposed wires before swapping it out. Don’t let this small but essential step slip by.


To summarise, Harley code P0132 is a frequent issue that can be brought on by various causes such as wiring glitch in the heater circuit of the oxygen sensor, exposed wires of an oxygen sensor or unnecessarily high fuel temperature.

To ensure that your catalytic converter isn’t damaged and to decrease the amount of hazardous emissions, this issue needs to be immediately addressed. If you’re experiencing any symptoms from the P0132 code like higher fuel usage, irregular shifting or engine shutoff, it’s best for a certified mechanic to take a look at your vehicle.


Below are some FAQs related to Harley code P0132:

What does Harley code P0132 mean?

If the ECM registers Harley code P0132, it means that Bank 1 Sensor 1 has read a voltage level higher than normal for an extended period of time.

What causes Harley code P0132?

A Harley P0132 code can be caused by a variety of issues, such as broken or exposed oxygen sensor wires, a short in the heater circuit of the oxygen sensiror, and fuel temperature that is too high.

What are the symptoms of Harley code P0132?

If your Harley is displaying code P0132, you may experience several signs such as boosted fuel consumption, shifting issues, or even the engine abruptly shutting off. On the contrary, in some cases there are no overt symptoms whatsoever.

Can I drive my Harley with code P0132?

While it is not dangerous to drive your Harley with code P0132, you should have the issue inspected and fixed swiftly to stop damage from occurring on the catalytic converter as well as minimizing hazardous emissions.

How is Harley code P0132 diagnosed?

An OBD-II scanner is the ideal tool for detecting Harley code P0132 and retrieving freeze frame data as well as trouble codes saved in the ECM. To ensure accurate voltage output, a mechanic would also take a test drive and observe oxygen sensor voltages. Furthermore, they will inspect the oxygens sensor wiring to make sure that no wires are broken or exposed.

How is Harley code P0132 repaired?

When diagnosing Harley code P0132, it is essential to first inspect the oxygen sensor wiring for any broken or exposed wires because this could be a potential issue. If no issues are found with the wiring, replacing the upstream oxygen sensor (bank 1 sensor 1) should fix the problem.
Ignoring an underlying issue with your vehicle’s wiring can cause further damage down the road and lead to costly repairs; thus making it crucial not to overlook these steps when attempting to resolve this particular error code.

Is Harley code P0132 a serious issue?

While Harley code P0132 is not necessarily a cause for alarm, it should be addressed immediately. If neglected over an extended amount of time, this code can harm your catalytic converter and release dangerous emissions into the environment. Don’t wait to have your issue inspected and resolved promptly.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *