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P128E Dodge Code - Transmission Control Module Power Control Circuit Overcurrent

Quick Answer

The P128E diagnostic trouble code for Dodge vehicles indicates an issue with the transmission control module power control circuit experiencing overcurrent. Common causes include Short circuit in the power control circuit, Damaged wiring or connectors, Faulty 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
P128E Dodge indicates Transmission Control Module Power Control Circuit Overcurrent.
Common causes
Common causes include Short circuit in the power control circuit, Damaged wiring or connectors, Faulty 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P128E Dodge Description

The P128E diagnostic trouble code for Dodge vehicles indicates an issue with the transmission control module power control circuit experiencing overcurrent. The transmission control module (TCM) is responsible for controlling various functions within the transmission system, such as gear shifting, torque converter lockup, and more. The power control circuit is essential for providing the necessary power to the TCM to operate effectively.

OBDII Code P128E Dodge - Transmission Control Module Power Control Circuit Overcurrent
P128E Dodge Code - Transmission Control Module Power Control Circuit Overcurrent

Common Causes of P128E Dodge

  1. Short circuit in the power control circuit
  2. Damaged wiring or connectors
  3. Faulty TCM
  4. Overloaded electrical system
  5. Corrosion or moisture in the electrical connections

Symptoms of P128E Dodge

  1. Erratic shifting behavior
  2. Transmission slipping
  3. Delayed engagement when shifting gears
  4. Transmission not shifting into certain gears
  5. Illumination of the Check Engine Light

How to Fix P128E Dodge

  1. Perform a thorough visual inspection of the wiring and connectors in the power control circuit to check for any signs of damage or corrosion.
  2. Test the TCM to ensure it is functioning correctly and not drawing excessive current.
  3. Check for any short circuits in the power control circuit using a multimeter.
  4. Replace any damaged wiring or connectors as needed.
  5. Clear the trouble code and perform a test drive to ensure the issue has been resolved.

Cost to Fix P128E Dodge

The cost for repairing a P128E code can vary depending on the specific cause of the issue. Typically, the cost for parts and labor to address this problem can range from $200 to $500. However, it is essential to note that actual repair costs can vary based on factors such as location, vehicle make and model, and the extent of the damage. It is recommended to consult with a qualified mechanic or auto repair shop to get an accurate estimate for addressing the P128E 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 P128E Dodge Code

1. What are the common symptoms of OBDII code P128E in a Dodge vehicle?

The common symptoms of OBDII code P128E include transmission shifting issues, reduced fuel efficiency, and the illumination of the check engine light.

2. What can cause the OBDII code P128E to trigger in a Dodge vehicle?

The OBDII code P128E in a Dodge vehicle is typically triggered by a malfunction in the Transmission Control Module (TCM) power control circuit, specifically due to overcurrent.

3. How serious is the OBDII code P128E in a Dodge vehicle?

While the code may not cause immediate drivability issues, it is important to address the underlying problem as it can lead to further damage to the transmission control system if left unresolved.

4. What are some possible repair tips for fixing the OBDII code P128E in a Dodge vehicle?

Repair tips for OBDII code P128E may include checking and repairing any damaged wiring or connections in the TCM power control circuit, as well as ensuring the TCM is functioning properly.

5. Can I continue to drive my Dodge vehicle with the OBDII code P128E present?

It is generally not recommended to continue driving with the OBDII code P128E present, as ignoring the issue may lead to further damage to the transmission control system over time.

6. How can I diagnose the OBDII code P128E in my Dodge vehicle?

Diagnosing the OBDII code P128E typically involves using a diagnostic scanner to retrieve the code, followed by a thorough inspection of the TCM power control circuit and related components.

7. Are there any recalls or technical service bulletins related to OBDII code P128E in Dodge vehicles?

It is advisable to check with the manufacturer or a Dodge dealership to inquire about any recalls or technical service bulletins related to the OBDII code P128E in your specific Dodge vehicle.

8. Can a DIY enthusiast repair the OBDII code P128E in a Dodge vehicle?

While some DIY enthusiasts may have the skills to address the issue, it is recommended to consult a professional mechanic or technician for proper diagnosis and repair of the OBDII code P128E.

9. How much does it typically cost to repair the OBDII code P128E in a Dodge vehicle?

The cost of repairing the OBDII code P128E can vary depending on the underlying issue, parts needed, and labor costs. It is advisable to obtain quotes from different repair shops for an accurate estimate.

10. How long does it take to repair the OBDII code P128E in a Dodge vehicle?

The repair time for the OBDII code P128E can vary based on the extent of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem.

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