Engine-Codes - Generic - P0899

P0899 Code - Transmission Control System MIL Request Circuit High

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

|P0899 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

|How is the P0899 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 P0899 code

Labor: 1.0

The cost to diagnose the P0899 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 P0899 code possible symptoms?

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

|What is P0899 code meaning?

The Transmission Control Module (TCM) requests the Engine Control Module (ECM) to set the Malfunction Indicator Light (MIL). The ECM sets the OBDII code when the there is a problem communicating to the TCM through the MIL request circuit.

|Need more information with the P0899 code?

Need more information on how to fix the P0899 code?
Get Access to Factory Service Manuals

|Need help with a P0899 code?

Get the P0899 code diagnosed by a professional: Find a repair shop in your area