What Is P1381 Honda Accord Error? Causes And Fixes

The P1381 Honda Accord error can be an intimidating issue for many drivers. However, understanding the nature of this problem is essential for timely and effective resolution. In this guide, we delve into the specifics of the P1381 Honda Accord code, its root causes, diagnostic steps, and potential fixes, with an emphasis on the 2000 and 2001 Honda Accord models.

What Is The P1381 Honda Accord Code?

The P1381 Honda Accord code refers to a specific diagnostic trouble code (DTC) associated with Honda vehicles, particularly the Honda Accord. When you see this error code, it typically signifies a problem with the Cylinder Position (CYP) Sensor, a critical component within your car’s engine system.

The CYP sensor’s primary function is to monitor the crankshaft’s position and speed, relaying this information to your car’s onboard computer system. This data aids in controlling engine timing and ignition, ensuring optimal vehicle performance.

When the P1381 Honda Accord code is triggered, it implies that the CYP sensor isn’t functioning as it should, which can lead to significant engine and transmission issues. This malfunction can manifest as sporadic transmission interruptions, sudden jerking movements while driving, or the illumination of the check engine light on your vehicle’s dashboard.

Causes Of P1381 Honda Accord Warning

The P1381 Honda Accord warning code is primarily triggered due to issues with the Cylinder Position (CYP) Sensor in your vehicle. A few specific issues are more likely to induce this warning:

Poor Electrical Connection

One of the most common reasons for the P1381 Honda Accord code is a poor electrical connection in the CYP sensor circuit. The engine control module (ECM) continually communicates with the sensor, and any interruption or weakness in this link can trigger the code.

Exposed Or Shorting Harness

The CYP sensor’s wiring harness is a crucial component of your car’s system, responsible for transmitting electrical signals from the sensor to the ECM. If the harness is exposed, damaged, or shorting out, it can lead to erratic sensor readings, thereby causing the P1381 Honda Accord warning to appear.

Faulty Cylinder Position Sensor

The CYP sensor itself may be at fault. If the sensor fails or gets impaired, it may produce incorrect readings or fail to transmit signals entirely. This situation can directly trigger the P1381 Honda Accord warning.

These three scenarios are the most common causes for the warning, but they aren’t exhaustive. Other less common causes might include faulty ECM or problems with other components linked to the CYP sensor circuit. It’s always recommended to get a comprehensive check by a professional mechanic to accurately pinpoint and fix the issue.

Diagnosing The P1381 Honda Accord Code

When your car experiences sluggish movement or sudden halts, it’s crucial to get to the root of the issue. Using an OBD scanner, you can pinpoint the cause. If the scanner reveals the P1381 Honda Accord code, it’s indicative of a cylinder position sensor issue.

Fixing The P1381 Honda Accord Issue

When faced with the P1381 Honda Accord warning, there are two primary avenues to consider – getting professional help or attempting to resolve it yourself. Below, we explore both options:

Consult A Mechanic

In most cases, it’s advisable to consult a professional mechanic to address the P1381 Honda Accord code. The mechanic’s expertise and familiarity with the Honda Accord’s engine and transmission system will facilitate an accurate diagnosis and effective resolution.

Potential issues such as problems with the ignition coil, distributor housing, or alternators require professional knowledge and tools to rectify. The cost of such a fix will depend on your vehicle’s specific engine variant, the extent of the problem, and the labor charges at your chosen repair shop.

DIY Approach

If you possess some mechanical knowledge and prefer the hands-on approach, you can attempt to address the P1381 Honda Accord issue by yourself. Here are some steps you can take:

Check The Connectors

Ensure that all connectors linked to the Cylinder Position sensor and its circuit are properly affixed.

Inspect The Coil Shield

Check if the coil shield is accurately installed. A missing or improperly installed shield can trigger the P1381 Honda Accord code.

Examine The Cylinder Position Sensor

Look at the sensor attached to the distributor. Ensure it’s in good condition and properly connected.

Measure Resistance

If you’re comfortable with more technical diagnostics, measure the resistance within the terminals of the CYP sensor. If the resistance is outside the range of 800 to 1500 ohms, the distributor might need to be replaced.

What Is P1381 Honda Accord 2000 Code?

The P1381 Honda Accord 2000 code is a diagnostic trouble code (DTC) that is specific to this particular model and year of the Honda Accord. Just like in other models, this code points towards an issue with the Cylinder Position (CYP) Sensor in the vehicle’s engine.

In the context of the 2000 Honda Accord, this sensor plays a critical role in controlling the ignition timing and fuel injection of the engine, directly impacting the overall performance of the vehicle. When the P1381 Honda Accord 2000 code surfaces, it implies a malfunction in the CYP sensor or its circuit, leading to irregularities in these vital engine functions.

Although the underlying issue associated with this code remains consistent across different Honda Accord models, the diagnostic and repair strategies might vary slightly due to changes in vehicle design, technology, and specifications across different model years.

What Is P1381 Honda Accord 2001 Code?

The P1381 Honda Accord 2001 code, much like its counterpart in the 2000 model, signifies a problem with the Cylinder Position (CYP) Sensor or its circuit. This sensor is integral to the operation of the 2001 Honda Accord’s engine, providing crucial data to the vehicle’s computer system for optimal ignition timing and fuel injection.

The manifestation of the P1381 Honda Accord 2001 code implies a malfunction or disruption in this sensor or its circuit, leading to potentially significant engine issues. This error could be the result of a faulty sensor, wiring issues, or a poor connection in the sensor circuit.

It’s crucial to remember that while the fundamental issue associated with the P1381 code remains consistent across the 2000 and 2001 Honda Accord models, there might be slight differences in diagnosing and fixing the problem due to variations in the design, technology, and specifications of these respective model years.


What Does The P1381 Code Mean On A Honda Accord?

The P1381 Honda Accord code indicates a potential issue with the car’s cylinder position sensor.

How Can I Fix The P1381 Honda Accord Code?

You can either hire a professional mechanic or try fixing it yourself by inspecting and possibly replacing the cylinder position sensor.

What Does The P1381 Honda Accord 2000 Code Signify?

The P1381 Honda Accord 2000 code is associated with the cylinder position sensor, just like other models. However, the exact issues might vary due to the model’s specifications.

Is The P1381 Honda Accord 2001 Code The Same As Other Models?

Yes, the P1381 Honda Accord 2001 code indicates a similar issue. However, the diagnosis and fixes may vary slightly due to the model year’s specifications.


Understanding the P1381 Honda Accord error is the first step towards a resolution. Whether it’s a P1381 Honda Accord 2000 or a P1381 Honda Accord 2001 error, the underlying issue often revolves around the cylinder position sensor. Though this issue may seem daunting, with the right knowledge and resources, you can tackle it with confidence.

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Ammar Masoud

I have had a long and fulfilling career in the automotive industry, primarily with Honda and Acura. With 15 years of experience as a Honda service technician, I became highly skilled in repair and maintenance, gaining a deep understanding of these vehicles. After many years in the automotive field, I decided to embark on a second career in industrial manufacturing. It was a significant change, but I found that the skills I had honed in the automotive industry were incredibly valuable in my new role. In my current position in industrial manufacturing, the demand for quality workmanship and meticulous attention to detail is paramount. Fortunately, these are traits that I have cultivated throughout my years in the automotive industry. I take pride in applying these skills to meet the high standards expected in the manufacturing sector.