P2644 Dodge Code - Torque Management Feedback Signal 'B' 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
- P2644 Dodge indicates Torque Management Feedback Signal 'B' 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.
Code P2644 Dodge 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 P2644 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 P2644 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 P2644 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.
Need more information about the P2644 Dodge code?
Need more information on how to fix the P2644 Dodge code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2644 Dodge code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2644 Dodge Code
1. What does the OBDII code P2644 mean on a Dodge?
Code P2644 indicates that the Torque Management Feedback Signal 'B' is reading higher than expected, which may suggest an issue with engine or transmission control systems.
2. What are the common symptoms of code P2644 on a Dodge?
Symptoms may include reduced engine performance, difficulty shifting gears, poor acceleration, or the illumination of the check engine light.
3. What causes the P2644 code on a Dodge?
Common causes include a faulty torque management sensor, wiring issues, a malfunctioning PCM (Powertrain Control Module), or electrical interference affecting the feedback signal.
4. Can I drive my Dodge with the P2644 code active?
Driving with this code is not recommended as it may lead to transmission or engine performance issues, potentially causing further damage.
5. How do I diagnose the P2644 code on my Dodge?
Diagnosis typically involves scanning for additional codes, inspecting the torque management sensor, checking wiring and connectors for damage, and testing the PCM for proper functionality.
6. How can I fix the P2644 code on a Dodge vehicle?
Repairs may include replacing the torque management sensor, repairing damaged wiring or connectors, updating or reprogramming the PCM, or addressing issues with related sensors.
7. How much does it cost to repair code P2644 on a Dodge?
Repair costs can vary widely, ranging from $100-$400 for sensor replacement, with higher costs if PCM reprogramming or replacement is required.
8. Can a faulty PCM cause the P2644 code on a Dodge?
Yes, a malfunctioning PCM can cause this code if it fails to properly process or interpret the torque management feedback signal.
9. What tools are needed to troubleshoot the P2644 code on a Dodge?
You’ll need an OBDII scanner, a multimeter for testing electrical components, and possibly wiring diagrams specific to your Dodge model.
10. Does the P2644 code affect fuel efficiency on a Dodge?
Yes, this code can negatively impact fuel efficiency by causing improper engine or transmission operation.
Discuss the causes and fixes for P2644 Dodge OBDII Code
Code P2644 Dodge comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
