AutoCodes – Dodge – P2641 Dodge

P2641 Dodge Code - Torque Management Feedback Signal 'B'

Quick Answer

To improve shift feel, the Transmission Control Module (TCM) may request that the Engine Control Module (ECM) reduce engine torque during shift events. Common causes include Faulty Engine Control Module (ECM), Faulty Transmission Control Module (TCM), Engine Control Module (ECM) software update. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2641 Dodge indicates Torque Management Feedback Signal 'B'.
Common causes: Common causes include Faulty Engine Control Module (ECM), Faulty Transmission Control Module (TCM), Engine Control Module (ECM) software update.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 3,731

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2641 Dodge Description

To improve shift feel, the Transmission Control Module (TCM) may request that the Engine Control Module (ECM) reduce engine torque during shift events. When such a request is received, the ECM responds by retarding the base ignition timing and notifying the TCM that the request has succeeded. If the ECM is unable to comply with the request, the ECM sends the TCM a message that the request has failed.
The torque reduction request is sent to the ECM through a communication network called the controller area network (CAN). Two circuits are used to communicate CAN data between the ECM and TCM.
A fault in the CAN will not cause the ECM to set the Diagnostic Trouble Codes (DTC). If a CAN fault occurs, other DTCs will set before this code.
The ECM set the OBDII code when the TCM receives a torque reduction failure message from the ECM.

OBDII Code P2641 Dodge - Torque Management Feedback Signal 'B' - AutoCodes.com — P2641 Dodge Code - Torque Management Feedback Signal 'B'

What does this mean?

What are the Possible Causes of the DTC P2641 Dodge?

Faulty Engine Control Module (ECM)
Faulty Transmission Control Module (TCM)
Engine Control Module (ECM) software update
Transmission Control Module (TCM) software update
Engine Control Module (ECM) harness is open or shorted
Engine Control Module (ECM) circuit poor electrical connection

How to Fix the DTC P2641 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2641 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2641 Dodge Code

What are common symptoms of OBDII code P2641 in a Dodge related to Torque Management Feedback Signal 'B'?

- Common symptoms include rough idling, decreased engine performance, and illuminated Check Engine Light.

What are the possible causes of OBDII code P2641 in a Dodge related to Torque Management Feedback Signal 'B'?

- Possible causes include a faulty torque management feedback signal circuit, issues with the powertrain control module, or wiring harness problems.

How can I diagnose OBDII code P2641 in a Dodge related to Torque Management Feedback Signal 'B'?

- Diagnosis involves using a scan tool to read the code, inspecting the wiring and connectors for damage, and testing the torque management feedback signal circuit.

What are some repair tips for fixing OBDII code P2641 in a Dodge related to Torque Management Feedback Signal 'B'?

- Repair tips include checking for loose connections, repairing or replacing damaged wiring, and ensuring proper grounding of the torque management feedback signal circuit.

Can I drive my Dodge with OBDII code P2641 related to Torque Management Feedback Signal 'B'?

- It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage or safety issues.

How much does it typically cost to repair OBDII code P2641 related to Torque Management Feedback Signal 'B' in a Dodge?

- The cost of repair can vary depending on the exact cause of the code, but it may range from $100 to $300 for parts and labor.

Can OBDII code P2641 in a Dodge related to Torque Management Feedback Signal 'B' cause permanent damage to the engine?

- If left unresolved, this code can potentially cause damage to the engine over time due to incorrect torque management feedback signals affecting engine performance.

Are there any recalls or technical service bulletins related to OBDII code P2641 in Dodge vehicles for Torque Management Feedback Signal 'B'?

- It's recommended to check with Dodge dealership or the National Highway Traffic Safety Administration (NHTSA) website for any recalls or technical service bulletins related to this issue.