What is OBD-II Code P2641 – Torque Management Feedback Signal B

What is OBD-II Code P2641 – Torque Management Feedback Signal B

Your vehicle’s onboard diagnostic system (OBD-II) continuously monitors its performance and maintains an electronic record of any faults detected in its various systems. In the event of a sensor or system malfunction, your vehicle’s OBD-II system generates a code that corresponds to the issue. By accessing these codes, mechanics can identify the precise source of any problem. One of the codes that can appear on an OBD-II scanner is the P2641 code, or Torque Management Feedback Signal B.

In this article, we will provide an in-depth explanation of what the P2641 code means, potential causes of the code, and how to address the issue. We’ll also answer some frequently asked questions to help you better understand this code and its implications.

What is the P2641 Code?

The P2641 code indicates that there is a problem with the torque management feedback signal B circuit in your vehicle. The torque management feedback signal circuit is responsible for ensuring that the appropriate amount of torque is being delivered to your vehicle’s drivetrain, based on the position of the throttle. The feedback signal circuit continuously monitors the engine’s output and adjusts the torque accordingly to ensure peak performance.

If there is a problem with the torque management feedback signal B, your vehicle’s system may be forced into a ‘limp mode,’ which restricts the vehicle’s speed and power.

What Causes the P2641 Code?

There are a number of potential causes of the P2641 code, including:

1. A faulty torque sensor: If the sensor that detects the engine’s torque output is out of calibration, damaged, or otherwise malfunctioning, it can generate the P2641 code.

2. Issues with the wiring or connections: Damage or corrosion to the wiring or connections related to the torque management feedback signal B circuit can cause a fault.

3. Mechanical problems: If there is a problem with the engine or transmission’s mechanical components, it can cause the P2641 code to appear.

How to Diagnose the P2641 Code:

The first step in diagnosing the P2641 code will be to use an OBD-II scanner to read the code. Once the code has been read, your mechanic will typically begin with a visual inspection of the wiring and connections related to the torque management feedback signal B circuit. If there is no visible damage or corrosion, they may proceed with more advanced tests, such as using a multimeter to test the circuit’s voltage or amperage.

In many cases, diagnosing the cause of the P2641 code will require extensive testing and troubleshooting. This is why it is often best to have a professional mechanic handle this repair.

How to Fix the P2641 Code:

If the issue behind the P2641 code is a faulty sensor, it may need to be replaced. If there are issues with the wiring or connections, they may need to be inspected and repaired as necessary. In many cases, repairing this code will require a professional mechanic, as it can be challenging to access some of the necessary components.

It is worth noting that if the P2641 code is related to mechanical issues with the engine or transmission, repairs may be more extensive and expensive. It is essential to address the issue promptly to prevent further damage to your vehicle.

Frequently Asked Questions

1. Can driving with the P2641 code damage my car?

Driving with the P2641 code may cause your vehicle to go into ‘limp mode,’ which can restrict your speed and power. Ignoring the code can lead to more significant mechanical issues over time, so it is essential to have the issue addressed as soon as possible.

2. Can I still drive with the P2641 code?

You may be able to safely drive with the P2641 code, but it will depend on the extent and cause of the issue. It is best to have a professional diagnostics scan performed before continuing to drive.

3. Can I use a code reader to diagnose the P2641 code?

Yes, an OBD-II code reader can be used to read the P2641 code, but it may not provide sufficient detail to diagnose the issue.

4. Will resetting the code fix the issue?

Simply resetting the code will not fix the underlying problem. The cause of the code must be identified and treated for the issue to be resolved.

5. How much does it cost to repair the P2641 code?

The cost of repairing the P2641 code will depend on the cause of the problem. The cost may range from a simple sensor replacement to more involved engine or transmission repairs. It is best to have a professional diagnostic scan performed to estimate the repair costs accurately.


If you suspect that your vehicle has a problem related to the torque management feedback signal B, it is essential to have a professional diagnostic scan performed as soon as possible. This will identify the cause of the issue and allow you to take the necessary steps to repair your vehicle’s systems. By understanding the P2641 code and its implications, you can be better prepared to identify, address, and resolve issues related to your vehicle’s performance.

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