Engine-Codes - Generic - U1008

U1008 - Lost Communication With Radiator Shutter

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U1008 Possible Causes

  • Faulty Active Air Flap (AAF) system
  • Engine Control Module (ECM) np communication with Active Air Flap (AAF) system
  • Active Air Flap (AAF) system harness is open or shorted
  • Active Air Flap (AAF) system poor electrical connection

How is the U1008 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 U1008 code

Labor: 1.0

The cost to diagnose the U1008 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.
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Possible Symptoms

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

U1008 Meaning

Lost Communication with Radiator Shutter also known as Active Air Flap.
Active Air Flap (AAF) system is equipped with a flip can be opened between radiator grille and radiator. During High speed driving, it will enhance the driving stability by closing the flap to reduce the air resistance. The Engine Control Module (ECM) will open the flap function if the inside the engine room temperature rises. The ECM sets the OBDII code when the Active Air Flap (AAF) system is not working to factory specifications.

More Information

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Information for specific makes

  • U1008 CHRYSLER LIN 1 Bus Steering Column Control Module Electrical Diagnostic
  • U1008 DODGE LIN 1 Bus Steering Column Control Module Electrical Diagnostic
  • U1008 HYUNDAI Lost Communication With Radiator Shutter
  • U1008 JEEP LIN 1 Bus Steering Column Control Module Electrical Diagnostic
  • U1008 KIA Lost Communication With Radiator Shutter
  • U1008 RAM LIN 1 Bus Steering Column Control Module Electrical Diagnostic

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