P1701 code — how to fix error fast

In case you retrieve the code P1701 in your car after a diagnostic test, you should take swift action to repair the issue due to the severity of the situation. This code is related to the transmission system in vehicles with automatic gearboxes and it can be devastating if you leave it unattended, thereby leading to a transmission rebuild.

So, our team wanted to give you an overview of the P1701 code meaning to give you a better perspective on the reasons why the code may activate, as well as diagnostic methods and solutions to the code.

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What does the P1701 code mean?

The OBD2 code P1701 indicates a problem with the transmission control module (TCM) in a vehicle. Specifically, it means that there is an issue with the TCM’s power supply circuit. This can be caused by a variety of factors, including faulty wiring, a blown fuse, or a malfunctioning relay.

If this code appears on a vehicle’s diagnostic system, it should be addressed promptly. Ignoring the problem can lead to further damage to the TCM or other components of the transmission system.

What causes the P1701 code?

The code P1701 can be caused by a variety of problems related to the transmission of your car, and it’s most likely triggered by a fault in the transmission control module (TCM). However, it doesn’t necessarily mean that this happened in your case, so here’s a complete overview of the possible reasons behind it:

Faulty TCM

A faulty TCM is one of the most common causes of the P1701 code. This can occur due to a variety of reasons, such as water damage, electrical issues, or simply wear and tear over time. Dirty transmission fluid can also cause the code, as it can lead to problems with the solenoids and other transmission components.

Problems with the transmission solenoid

This component of the transmission system in your car is responsible for controlling the hydraulic pressure within the system, so it’s naturally one of the main reasons why the code could appear in your car. If the hydraulic pressure is inconsistent, it could lead to bad information being reported to the TCM which triggers the P1701 code.

Wiring issues

Wiring issues can also cause the P1701 code. This can occur if the wiring that connects the TCM to other components in the vehicle becomes damaged or corroded. Malfunctioning solenoids can also lead to the P1701 code, as these are responsible for controlling the flow of fluid within the transmission.

Problems with internal transmission components

Internal transmission problems can also cause the P1701 code. This can occur if there is damage to the transmission itself, such as worn gears or damaged seals.

Which car models does the P1701 code affect the most?

Since the OBD2 code P1701 is related to the transmission control module (TCM), any vehicle that has a TCM can potentially be affected by this code. However, there are some car models that are more likely to experience this issue than others.

• Nissan Maxima: This vehicle is one of the most commonly affected cars by the code P1701. In fact, there was a recall in 2005 for certain Maxima models due to issues with the TCM, which could cause the transmission to fail or even result in a fire.
• Honda Accord: Some model years of the Accord, such as 2003 and 2004, have been known to experience problems with the TCM power supply circuit, leading to issues with shifting and acceleration.

How to diagnose the P1701 code

Diagnosing the OBD2 code P1701 can be a complex process, as there are several potential causes of this issue. Here are some of the main ways that you may go about diagnosing this problem:

Use an OBD2 scanner tool

Many modern vehicles come equipped with onboard diagnostic systems that can provide information about the status of various systems and components. A scan tool can be used to retrieve diagnostic trouble codes (DTCs) from the vehicle’s computer, including the P1701 code. This can provide valuable information about the specific nature of the problem.

Checking the circuit

If the issue appears to be related to the TCM power supply circuit, you may perform circuit testing to check for continuity, voltage drops, and other potential issues. You can use a multimeter for this purpose, or refer to a trusted mechanic to do the task if you don’t have much experience with it.

Testing internal transmission components

If circuit testing reveals no issues, technicians may need to test individual components of the transmission system, such as the TCM itself or related sensors and actuators.

How to fix the P1701 code

Once you’ve got the proper diagnosis of the code, you can make use of this by applying an accordant fix depending on what’s causing the problem in your car. Here are some of the main methods you can use to fix and remove the code:

Repair damaged wiring

If the issue is related to damaged or corroded wiring in the TCM power supply circuit, repairing or replacing the affected wiring may be necessary.

Replacing blown fuses or relays

Blown fuses or relays can also cause issues with the TCM power supply circuit. Replacing these components can often resolve the issue.

Replacing a faulty TCM

If testing reveals that the TCM itself is faulty, it may need to be replaced. This can be a more complex and involved repair, as it may require programming and calibration of the new TCM to ensure it works correctly with the vehicle’s other systems.

Performing TCM software updates

Finally, in some cases, performing software updates or reprogramming the vehicle’s computer may be necessary to address issues related to the TCM power supply circuit.

How to prevent the P1701 code

Preventing the P1701 code can be achieved through routine maintenance of your vehicle’s transmission. Here’s a list of steps you can take to properly avoid the risk of being exposed to this code:

• Regular transmission fluid changes
• Ensuring that the wiring and connections are clean and tight
• Inspecting any transmission-related problems on time

By understanding the P1701 code and taking preventative measures, you can help to keep your vehicle running smoothly and avoid potentially expensive repairs in the future.

Our take

Overall, the code P1701 can be pretty bothersome especially if you leave it be for long enough to affect your car’s transmission. As you probably know, it’s among the most expensive systems to repair along with the engine itself, so we hope you’ll use the information listed in this guide to your advantage for the goal of properly solving this issue.