AutoCodes – Ford – P2640 Ford

P2640 Ford Code - Torque Management Feedback Signal 'A' High

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: P2640 Ford indicates Torque Management Feedback Signal 'A' High.
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 1,742

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 P2640 Ford 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 P2640 Ford - Torque Management Feedback Signal 'A' High - AutoCodes.com — P2640 Ford Code - Torque Management Feedback Signal 'A' High

What does this mean?

What are the Possible Causes of the DTC P2640 Ford?

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 P2640 Ford?

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 P2640 Ford 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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Need Help with the Code?

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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 P2640 Ford Code

1. What are the common symptoms of OBDII code P2640 in a Ford vehicle?

- Common symptoms include engine stalling, decreased fuel efficiency, rough idling, and difficulty accelerating.

2. What can cause the Torque Management Feedback Signal 'A' High error code P2640 in a Ford?

- The code P2640 in a Ford is typically caused by a faulty torque management feedback sensor, wiring issues, or a malfunctioning PCM.

3. How serious is the OBDII code P2640 Torque Management Feedback Signal 'A' High in a Ford?

- While the code may not cause immediate harm to the vehicle, it can lead to drivability issues and potential long-term engine damage if left unresolved.

4. How can I diagnose the OBDII code P2640 in my Ford vehicle?

- Diagnosis of code P2640 involves using an OBDII scanner to read the code, checking the wiring and connections related to the torque management feedback sensor, and testing the sensor itself.

5. Can I continue driving my Ford with the P2640 error code present?

- It is not recommended to drive the vehicle with the P2640 code present, as it can lead to poor engine performance and potential safety hazards.

6. How can I repair the Torque Management Feedback Signal 'A' High issue in my Ford?

- Repairing the P2640 code may involve replacing the torque management feedback sensor, repairing any damaged wiring, or reprogramming the PCM.

7. Are there any DIY tips for fixing the P2640 code in my Ford?

- DIY tips include checking for loose or damaged wiring, inspecting the sensor for any signs of damage, and ensuring all connections are secure.

8. How much does it cost to repair the OBDII code P2640 in a Ford?

- The cost of repairing the P2640 code in a Ford can vary depending on the extent of the issue, with potential costs ranging from $100 to $500 or more.

9. Can a mechanic reset the P2640 code in my Ford without repairing the underlying issue?

- While a mechanic can clear the code using a scanner, it is crucial to address the underlying problem to prevent the code from reoccurring.

10. How can I prevent the OBDII code P2640 from reappearing in my Ford in the future?

- Regular maintenance, such as checking and replacing sensors as needed, keeping up with recommended service schedules, and addressing any engine performance issues promptly, can help prevent the P2640 code from reappearing.