OBD Guide
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B10E8

Blower Motor Control Circuit

B10E8 is an OBD-II diagnostic trouble code meaning: Blower Motor Control Circuit. Common causes: open or short circuit in wiring harness, fan relay fault. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Heater fan does not work
  • Fan only works at some speeds
  • The fan turns on spontaneously

Causes

  • Open or short circuit in wiring harness
  • Fan relay fault
  • Blown fuse
  • Fan control module problems
  • Fan motor malfunction

How to Fix

  1. Check the fan fuse
  2. Check fan relay
  3. Inspect the wiring harness for damage
  4. Check the operation of the fan motor
  5. Check Fan Control Module

Related codes

B10E9B10EAB10EB

FAQ

What does the B10E8 code mean?

B10E8 is an OBD-II diagnostic trouble code that indicates: Blower Motor Control Circuit

What causes a B10E8 error code?

The most common causes of B10E8 include: Open or short circuit in wiring harness; Fan relay fault; Blown fuse; Fan control module problems.

How do I fix a B10E8 diagnostic trouble code?

To fix B10E8: Check the fan fuse. Check fan relay. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B10E8?

Limited driving only, diagnose soon

How much does it cost to fix B10E8?

The estimated repair cost for B10E8 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat