AutoCodes – Dodge – P1639 Dodge

P1639 Dodge Code - TCM Internal CAN 2 RAM Performance

Quick Answer

P1639 Dodge indicates TCM Internal CAN 2 RAM Performance. Common causes include Failed 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: P1639 Dodge indicates TCM Internal CAN 2 RAM Performance.
Common causes: Common causes include Failed 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 6,766

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 May 20, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1639 Dodge Description

OBDII Code P1639 Dodge - TCM Internal CAN 2 RAM Performance - AutoCodes.com — P1639 Dodge Code - TCM Internal CAN 2 RAM Performance

What does this mean?

What are the Possible Causes of the DTC P1639 Dodge?

Failed Transmission Control Module (TCM)

How to Fix the DTC P1639 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 does this mean?

Code Tech Notes

The TCM is reporting an internal processor error

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1639 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 P1639 Dodge code?

Need more information on how to fix the P1639 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1639 Dodge code diagnosed by a professional: Find a repair shop in your area

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.