P1639 Jeep Code - TCM Internal CAN 2 RAM Performance
Quick Answer
The P1639 Jeep diagnostic trouble code (DTC) specifically refers to a fault in the Transmission Control Module (TCM) internal CAN 2 (Controller Area Network 2) RAM (Random Access Memory) performance. Common causes include Faulty TCM internal memory, Wiring or connector issues within the TCM circuit, Defective TCM unit. 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 Jeep indicates TCM Internal CAN 2 RAM Performance.
- Common causes
- Common causes include Faulty TCM internal memory, Wiring or connector issues within the TCM circuit, Defective TCM unit.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1639 Jeep Description
The P1639 Jeep diagnostic trouble code (DTC) specifically refers to a fault in the Transmission Control Module (TCM) internal CAN 2 (Controller Area Network 2) RAM (Random Access Memory) performance. The CAN 2 is a communication protocol used in modern vehicles to facilitate communication between various control modules within the vehicle, including the TCM. RAM is a type of computer memory that is used for data storage and quick access by the TCM.
Common Causes of P1639 Jeep
- Faulty TCM internal memory
- Wiring or connector issues within the TCM circuit
- Defective TCM unit
- Electrical interference or noise affecting the TCM
- Water damage or corrosion in the TCM circuit
Symptoms of P1639 Jeep
- Erratic shifting behavior
- Harsh or delayed gear changes
- Transmission slipping
- Transmission not engaging properly
- Illumination of the check engine light
How to Fix P1639 Jeep
- Perform a thorough diagnostic scan to confirm the presence of the P1639 code.
- Inspect the TCM wiring harness and connectors for any signs of damage or corrosion.
- Test the TCM unit for proper functionality and replace if necessary.
- Clear the code from the system and perform a test drive to confirm the repair.
- If the issue persists, consult a professional technician for further diagnosis and repair.
Cost to Fix P1639 Jeep
The typical repair costs for addressing a P1639 Jeep code can vary depending on the specific cause of the issue. In general, the cost of replacing a faulty TCM unit can range from $500 to $1000, including parts and labor. Additional costs may apply if wiring repairs or other components need to be replaced. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check local rates for a more accurate estimate.
Need more information about the P1639 Jeep code?
Need more information on how to fix the P1639 Jeep code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1639 Jeep code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1639 Jeep Code
No Frequently Asked Questions about P1639 Jeep Code found.
Discuss the causes and fixes for P1639 Jeep OBDII Code
Code P1639 Jeep 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.