Engine-Codes - Generic - P0899

P0899 Code - Transmission Control System MIL Request Circuit High

- Code Popularity: 9,184 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code P0899?

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

|How to Fix the P0899 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 Code P0899?

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.

Does your Car have Safety Recalls? → Check here

|What are Code P0899 Possible Symptoms?

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

|What Does the P0899 Code Mean?

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.

P0899 Code - Transmission Control System MIL Request Circuit High

|Need more Information on the P0899 Code?

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

|Need Help with the P0899 Code?

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