AutoCodes – Chrysler – P2637 Chrysler

P2637 Chrysler Code - Torque Management Feedback Signal 'A'

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 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: P2637 Chrysler indicates Torque Management Feedback Signal 'A'.
Common causes: Common causes include Faulty Engine Control Module (ECM), Faulty Transmission Control Module (TCM), Engine Control Module 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 1,562

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 Jun 08, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2637 Chrysler 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 cannot 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). Other DTCs will be set before this code if a CAN fault occurs.
The ECM sets the OBDII code when the TCM receives a torque reduction failure message from the ECM.

OBDII Code P2637 Chrysler - Torque Management Feedback Signal 'A' - AutoCodes.com — P2637 Chrysler Code - Torque Management Feedback Signal 'A'

What does this mean?

What are the Possible Causes of the DTC P2637 Chrysler?

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

How to Fix the DTC P2637 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 P2637 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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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 P2637 Chrysler Code

What does the OBDII code P2637 mean for my Chrysler vehicle?

The OBDII code P2637 indicates a problem with the torque management feedback signal 'A', which is related to the engine control module's communication with the transmission control module regarding engine torque management.

What are some common symptoms of the P2637 code?

Common symptoms include reduced engine power, poor acceleration, a check engine light, and potential transmission shifting issues, as the torque management system may be altered.

What could cause the P2637 code to trigger?

Causes may include a faulty torque management sensor, issues with wiring or connectors, a malfunctioning transmission control module, or problems with the engine control module itself.

How can I diagnose the P2637 code?

To diagnose P2637, use an OBDII scanner to confirm the code, inspect wiring and connectors for damage, check the torque management sensor's functionality, and perform a visual inspection of the transmission and engine control systems.

What repairs are needed to fix the P2637 code?

Repairs can include replacing a faulty torque management sensor, repairing or replacing damaged wiring or connectors, or updating/replacing the engine or transmission control module as needed.

Can I drive my vehicle with the P2637 code?

While it is possible to drive with this code, it is not recommended as it may lead to reduced performance, potential transmission issues, and could exacerbate existing problems.

How much will it cost to repair the P2637 code?

Repair costs can vary widely based on the underlying issue, ranging from $100 to $1,000 or more, depending on whether you need a simple sensor replacement or a more complex module repair.

Is there a way to clear the P2637 code without fixing the problem?

Yes, you can clear the code using an OBDII scanner, but this will not resolve the underlying issue and the code will likely reappear if the problem persists.

Will the P2637 code affect my vehicle's emissions?

While P2637 primarily relates to torque management, it may indirectly affect emissions due to changes in engine performance. However, it is not a direct emissions-related code.