P2641 Chrysler 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 Chrysler 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.
Code P2641 Chrysler Description
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.
What are the Possible Causes of the DTC P2641 Chrysler?
- 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 Chrysler?
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 Chrysler 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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Frequently Asked Questions about P2641 Chrysler Code
1. What does the OBDII code P2641 mean on a Chrysler vehicle?
P2641 indicates an issue with the Torque Management Feedback Signal 'B,' suggesting the signal from the sensor is either out of range or not being received correctly by the engine control module (ECM).
2. What are the common symptoms of the P2641 code in a Chrysler?
Symptoms may include reduced engine performance, difficulty shifting gears (in automatic transmissions), poor fuel efficiency, and an illuminated check engine light.
3. What causes the P2641 code to appear in a Chrysler?
Common causes include a faulty torque management sensor, damaged wiring or connectors in the signal circuit, a malfunctioning ECM, or software issues within the vehicle's control system.
4. How can I diagnose the P2641 code on my Chrysler?
Start by using an OBDII scanner to confirm the code. Inspect the wiring and connectors related to the torque management sensor for damage or corrosion. Test the sensor's functionality and verify signal readings with a multimeter.
5. Can I drive my Chrysler with a P2641 code?
It’s not recommended to drive with this code active, as it may cause further damage to the engine or transmission and result in unsafe driving conditions due to reduced performance.
6. How do I fix the P2641 code on a Chrysler?
Repairs may include replacing the torque management sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or updating the ECM software.
7. How much does it cost to repair the P2641 code in a Chrysler?
Repair costs vary depending on the issue. Replacing a sensor can range from $100 to $300, while wiring repairs may be less expensive. ECM updates or replacements can cost significantly more.
8. Can a dirty or failing sensor trigger the P2641 code?
Yes, a dirty or failing torque management sensor can cause the feedback signal to be out of range, resulting in the P2641 code.
9. Will resetting the check engine light fix the P2641 code?
Resetting the check engine light may temporarily clear the code, but it won’t address the underlying issue. The code will likely return unless the problem is properly fixed.
10. Is the P2641 code related to other diagnostic codes?
Yes, it may appear with other codes related to torque management, transmission, or engine performance. These should be diagnosed and addressed together for a complete repair.
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