OBD Guide
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U1008

Lost Communication With Radiator Shutter

U1008 is an OBD-II diagnostic trouble code meaning: Lost Communication With Radiator Shutter. Common causes: open or short circuit in the curtain control circuit, radiator curtain drive malfunction. Estimated repair cost: $3–78.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$3–78 (est.)

Symptoms

  • Flashing Check Engine Light
  • Loss of engine power in hot weather
  • Difficulty warming up the engine in winter
  • Unstable coolant temperature

Causes

  • Open or short circuit in the curtain control circuit
  • Radiator curtain drive malfunction
  • Wiring Harness Problems
  • Contact corrosion
  • Problems with power supply to the curtain module

How to Fix

  1. Check radiator curtain circuit fuse
  2. Inspect and check the integrity of the wiring harness
  3. Check the operation of the curtain drive
  4. Scan for other trouble codes
  5. Test the operation of the curtain using a diagnostic scanner

Related codes

U1000U1010U1108U1208

FAQ

What does the U1008 code mean?

U1008 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Radiator Shutter

What causes a U1008 error code?

The most common causes of U1008 include: Open or short circuit in the curtain control circuit; Radiator curtain drive malfunction; Wiring Harness Problems; Contact corrosion.

How do I fix a U1008 diagnostic trouble code?

To fix U1008: Check radiator curtain circuit fuse. Inspect and check the integrity of the wiring harness. Check the operation of the curtain drive. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1008?

Yes, but get it checked soon

How much does it cost to fix U1008?

The estimated repair cost for U1008 is $3–78. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat