Fixing P1765 Error in 2000 Dodge Durango: Step-by-step Guide for Dodge Owners

If you’re a proud owner of a 2000 Dodge Durango, you’re well aware of the robust performance and the reliable utility this SUV offers. However, like any vehicle, it may sometimes run into mechanical hiccups. One of these includes encountering the P1765 error code. This specific error can be a bit tricky to understand and solve, but there’s no need to worry! This guide aims to simplify the process, helping you comprehend and rectify this common problem within your vehicle’s transmission control system.

Understanding the P1765 Error Code in a 2000 Dodge Durango

Before diving into the troubleshooting, it’s essential to understand what the P1765 error code signifies. This code points to an issue within the transmission control system of your Dodge Durango, particularly a malfunction within the system’s relay circuit. This glitch can negatively impact your vehicle’s performance, making it essential to address it promptly.

So, what does a “relay circuit” mean? In layman’s terms, a relay in your vehicle acts like a switch, controlling a large amount of electrical current using a smaller one. In this case, the transmission control relay manages the operation of your Durango’s transmission control module. If this relay encounters a problem, it could lead to the P1765 error code displaying on your vehicle’s diagnostic system.

Common Symptoms of the P1765 Error Code

Now that we’ve got a basic understanding of the P1765 error code let’s look at some common signs that might suggest its presence. Recognizing these symptoms can help you diagnose the issue early and take necessary actions:

  1. Sluggish vehicle performance: If your Durango seems slower than usual or doesn’t respond promptly to your commands, it might be a symptom of the P1765 error.
  2. Difficulty changing gears: Trouble shifting gears is another common sign. You might experience this as a noticeable delay or difficulty in the gear shift.
  3. Check Engine Light: The most direct sign is the illumination of the check engine light on your dashboard. This light signifies a range of potential problems, including the P1765 error.

Causes of the P1765 Error Code

Understanding the causes behind the P1765 error code can make troubleshooting more efficient. Several factors could lead to this error, including:

  1. Damaged wiring or connectors in the transmission control circuit: Your vehicle’s circuits contain numerous wires and connectors. Over time, these can suffer from wear and tear or even damage, leading to various problems, including the P1765 error.
  2. A faulty transmission control relay: As we discussed earlier, the relay plays a crucial role in controlling your Durango’s transmission system. If the relay malfunctions, it can trigger the P1765 error code.
  3. Malfunctioning Powertrain Control Module (PCM): The PCM is the brain of your vehicle, controlling and managing various operations, including transmission control. If the PCM itself is faulty, it could cause several issues, including our troublesome P1765 error.

Step-by-step Guide to Troubleshoot P1765 Error Code

Fixing P1765 Error in 2000 Dodge Durango
Smiling mechanic troubleshooting a car engine

Armed with a basic understanding of the P1765 error code, its symptoms, and its causes, we can now move to the main event – the troubleshooting. Please remember, while the following steps are straightforward, if at any point you feel uncomfortable performing these tasks, it’s best to consult a professional mechanic. Here’s what you need to do:

Step 1: Inspect the wiring and connectors in the transmission control circuit

Start by giving the wiring and connectors a good look-over. Check for any visible signs of damage or wear. Look for frayed wiring or loose connectors, which can lead to a myriad of errors, including the P1765. If you find any issues, you’ll need to replace the faulty components.

Step 2: Test the transmission control relay

Next, check the transmission control relay. You can use a multimeter to test if the relay is functioning correctly. If the multimeter shows an abnormal reading, you’ll need to replace the relay. If you’re not familiar with using a multimeter, it might be a good idea to take help from a mechanic for this step.

Step 3: Examine the Powertrain Control Module (PCM)

If both the wiring and relay seem fine, the issue might lie within the PCM. This step can be a bit complex, as the PCM is a sophisticated component of your vehicle. It controls various parameters of your vehicle’s operations and needs a careful examination. This task is typically best left to professionals, as it requires specific tools and knowledge to diagnose and repair.

Cost of Fixing the P1765 Error Code in Your 2000 Dodge Durango

It’s crucial to consider the costs involved when dealing with the P1765 error code. The total cost can vary significantly depending on the exact cause of the error.

  1. Replacement of Wiring or Connectors: If the P1765 error stems from damaged wiring or connectors, the costs are typically lower. You’re mainly looking at the price of the replacement parts, which can range anywhere from $50 to $200, and the labor costs.
  2. Replacement of the Transmission Control Relay: If you need to replace a faulty transmission control relay, the cost can increase slightly. The part itself can cost between $20 and $100, depending on the brand and where you buy it from. Plus, the labor costs to install it should also be factored in.
  3. Replacement or Repair of the Powertrain Control Module (PCM): If the P1765 error is due to a malfunctioning PCM, this will be the most costly repair. A new PCM can range from $500 to $1000, and that’s before adding in the labor costs.


What does the P1765 error code mean in a 2000 Dodge Durango?

The P1765 error code points to a malfunction in your Dodge Durango’s transmission control system, specifically within the system’s relay circuit.

What are the common symptoms of a P1765 error code?

Common symptoms of a P1765 error code may include sluggish vehicle performance, difficulty in changing gears, and the illumination of the check engine light on your dashboard.

Can I continue to drive my 2000 Dodge Durango with a P1765 error code?

While your vehicle may still operate with a P1765 error code, it’s not advisable to ignore it. The code indicates a problem in the transmission control system that can negatively impact your vehicle’s performance and potentially lead to more severe issues if not addressed promptly.

Is it essential to consult a professional mechanic for a P1765 error code?

If you’re comfortable with basic vehicle troubleshooting, you might be able to diagnose and even fix the P1765 error code yourself. However, if at any point you feel uncertain or if the problem involves complex systems like the PCM, it’s best to seek help from a professional mechanic.


Encountering the P1765 error code in your 2000 Dodge Durango can be a cause for concern, but with some basic knowledge and a bit of patience, you can effectively troubleshoot and potentially solve the issue yourself. This guide provides the necessary information to help you understand and diagnose the P1765 error code. However, always remember, if the problem persists or feels overwhelming at any point, don’t hesitate to seek professional help. After all, ensuring the safety and optimal performance of your vehicle should always be your top priority.