AutoCodes – Chrysler – P1631 Chrysler

P1631 Chrysler Code - TCM Internal Processor Clock Performance

Quick Answer

P1631 Chrysler indicates TCM Internal Processor Clock Performance. Common causes include Faulty Transmission Control Module (TCM). 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: P1631 Chrysler indicates TCM Internal Processor Clock Performance.
Common causes: Common causes include Faulty Transmission Control Module (TCM).
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 3,231

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 21, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1631 Chrysler Description

OBDII Code P1631 Chrysler - TCM Internal Processor Clock Performance - AutoCodes.com — P1631 Chrysler Code - TCM Internal Processor Clock Performance

What does this mean?

What are the Possible Causes of the DTC P1631 Chrysler?

Faulty Transmission Control Module (TCM)

How to Fix the DTC P1631 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 does this mean?

Code Tech Notes

Transmission Control Module (TCM) Internal Processor Clock Performance

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1631 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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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 P1631 Chrysler Code

1. What does the OBDII code P1631 mean for a Chrysler vehicle?

P1631 indicates an issue with the Transmission Control Module (TCM) related to its internal processor clock performance, which may affect transmission operation.

2. What are the common symptoms of the P1631 code in a Chrysler?

Symptoms may include erratic shifting, the transmission stuck in limp mode, poor vehicle performance, or the illumination of the check engine light.

3. What causes the P1631 code to appear on a Chrysler?

The code is typically caused by a faulty TCM, electrical issues such as damaged wiring or poor connections, or an internal processor clock malfunction.

4. Can a P1631 code cause transmission damage if ignored?

While the P1631 code itself may not cause immediate damage, prolonged driving with unresolved transmission issues could lead to further complications.

5. How is the P1631 code diagnosed in a Chrysler?

Diagnosis involves scanning the vehicle with an OBDII scanner, inspecting TCM wiring and connectors, and testing the TCM for proper functionality.

6. Is the TCM always the issue when a P1631 code is present?

No, the problem could also stem from wiring issues, poor electrical connections, or other related components, so thorough diagnosis is necessary.

7. Can I clear the P1631 code without fixing the problem?

Clearing the code without addressing the underlying issue will likely result in the code returning and continued transmission performance problems.

8. How much does it cost to fix a P1631 code on a Chrysler?

The cost can vary widely depending on whether the TCM needs replacement, which may cost $300–$1,000, or if it’s a simpler repair like fixing wiring or connections.

9. Can I drive my Chrysler with a P1631 code?

While you might be able to drive short distances, it’s not recommended as it could lead to unsafe driving conditions or further transmission issues.

10. What are some repair tips for fixing the P1631 code?

Check for damaged wiring or loose connections at the TCM, ensure the TCM receives proper power and ground, and replace the TCM if it’s determined to be faulty.