OBD Guide
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B19A4

Driver Seat Back Blower Speed Short to Battery

B19A4 is an OBD-II diagnostic trouble code meaning: Driver Seat Back Blower Speed Short to Battery. Common causes: wiring harness damage, fan fault. Estimated repair cost: $56–167.

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

Symptoms

  • The driver's seat back fan does not work
  • Burning smell in the cabin
  • Blown fuses

Causes

  • Wiring harness damage
  • Fan fault
  • Short circuit in the control unit

How to Fix

  1. Check the wiring harness for damage
  2. Check the fan for serviceability
  3. Replace damaged components
  4. Check fuses and replace if necessary

Related codes

B19A3B19A5

FAQ

What does the B19A4 code mean?

B19A4 is an OBD-II diagnostic trouble code that indicates: Driver Seat Back Blower Speed Short to Battery

What causes a B19A4 error code?

The most common causes of B19A4 include: Wiring harness damage; Fan fault; Short circuit in the control unit.

How do I fix a B19A4 diagnostic trouble code?

To fix B19A4: Check the wiring harness for damage. Check the fan for serviceability. Replace damaged components. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B19A4?

Limited driving only, diagnose soon

How much does it cost to fix B19A4?

The estimated repair cost for B19A4 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat