OBD Guide
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B2471

Interior Fan Control Circuit Open

B2471 is an OBD-II diagnostic trouble code meaning: Interior Fan Control Circuit Open. Common causes: broken wiring harness, fan relay fault. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Interior fan does not work
  • The fan only runs at maximum speed
  • Fan speed is not adjustable

Causes

  • Broken wiring harness
  • Fan relay fault
  • Problems with the climate control unit
  • Fan motor malfunction
  • Oxidation of contacts

How to Fix

  1. Check the fan circuit fuse
  2. Inspect the wiring harness for damage
  3. Check relay functionality
  4. Test the fan motor
  5. Check contacts and connectors
  6. Diagnose the climate control control unit

Related codes

B24700B2472B2473

FAQ

What does the B2471 code mean?

B2471 is an OBD-II diagnostic trouble code that indicates: Interior Fan Control Circuit Open

What causes a B2471 error code?

The most common causes of B2471 include: Broken wiring harness; Fan relay fault; Problems with the climate control unit; Fan motor malfunction.

How do I fix a B2471 diagnostic trouble code?

To fix B2471: Check the fan circuit fuse. Inspect the wiring harness for damage. Check relay functionality. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2471?

Limited driving only, diagnose soon

How much does it cost to fix B2471?

The estimated repair cost for B2471 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat