Engine-Codes - Dodge - P0866 DODGE

P0866 DODGE Code - TCM Communication Circuit High

- Code Popularity: 3,505 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P0866 DODGE Code?

  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module (TCM) harness is open or shorted
  • Transmission Control Module (TCM) circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

|How to Fix the P0866 DODGE Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the P0866 DODGE code?

Labor: 1.0

The cost to diagnose the P0866 DODGE code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0866 DODGE code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P0866 DODGE Code Mean?

The Engine Control Module (ECM) monitors the Transmission Control Module (TCM). The ECM sets the OBDII when there is a problem communicating with the TCM.

TCM Communication Circuit High

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