Engine-CodesDodge – P0864 Dodge

P0864 Dodge Code - TCM Communication Circuit Range/Performance

Quick Answer

The P0864 code in a Dodge vehicle indicates a problem with the Transmission Control Module (TCM) Communication Circuit Range/Performance. Common causes include Faulty Transmission Control Module (TCM), Damaged wiring or connectors in the communication circuit, Malfunctioning transmission control module. 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
P0864 Dodge indicates TCM Communication Circuit Range/Performance.
Common causes
Common causes include Faulty Transmission Control Module (TCM), Damaged wiring or connectors in the communication circuit, Malfunctioning transmission control module.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0864 Dodge Description

The P0864 code in a Dodge vehicle indicates a problem with the Transmission Control Module (TCM) Communication Circuit Range/Performance. The TCM is responsible for controlling the transmission functions in the vehicle, including gear shifts and overall performance. When this circuit's communication range or performance is out of the specified parameters, it can lead to various issues with the transmission system.

OBDII Code P0864 Dodge - TCM Communication Circuit Range/Performance
P0864 Dodge Code - TCM Communication Circuit Range/Performance

Common Causes of P0864 Dodge

  1. Faulty Transmission Control Module (TCM)
  2. Damaged wiring or connectors in the communication circuit
  3. Malfunctioning transmission control module
  4. Low transmission fluid levels
  5. Electrical issues in the transmission system

Symptoms of P0864 Dodge

  1. Erratic shifting behavior
  2. Transmission slipping or hesitation
  3. Limp mode activation
  4. Illuminated Check Engine Light
  5. Decreased fuel efficiency

How to Fix P0864 Dodge

  1. Diagnose the specific cause of the P0864 code using a diagnostic scanner.
  2. Inspect the TCM, wiring, and connectors for any visible damage or corrosion.
  3. Repair or replace any damaged wiring or connectors in the communication circuit.
  4. Test the TCM and transmission control module for proper function and replace if necessary.
  5. Clear the code and test drive the vehicle to ensure the issue is resolved.

Cost to Fix P0864 Dodge

The cost of repairing a P0864 code in a Dodge vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair could range from $200 to $600, while labor costs could range from $100 to $300. Overall, the total repair cost for addressing this code could range from $300 to $900. It is important to note that these are rough estimates, and actual costs may vary based on the location of the repair shop, the vehicle's make and model, and the labor rates charged. It is recommended to obtain quotes from multiple repair shops to get a more accurate cost estimate.

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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.

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