Engine-Codes - Generic - P0864

P0864 Code - TCM Communication Circuit Range/Performance

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0864 code possible causes

  • 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 is the P0864 code repair?

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 P0864 code

Labor: 1.0

The cost to diagnose the P0864 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 P0864 code possible symptoms?

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

|What is P0864 code meaning?

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.

|Need more information with the P0864 code?

Need more information on how to fix the P0864 code?
Get Access to Factory Service Manuals

|P0864 code information for specific makes

|Need help with a P0864 code?

Get the P0864 code diagnosed by a professional: Find a repair shop in your area