OBD Guide
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B2919

Auxiliary Blower Motor Speed Input Circuit Short To Voltage

B2919 is an OBD-II diagnostic trouble code meaning: Auxiliary Blower Motor Speed Input Circuit Short To Voltage. Common causes: wiring harness damage, solenoid valve malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Incorrect operation of the additional fan
  • The fan does not turn on
  • Engine overheating
  • Check Engine light comes on

Causes

  • Wiring harness damage
  • Solenoid valve malfunction
  • Problems with the fan itself
  • Short circuit in control circuit

How to Fix

  1. Check wiring harness for damage
  2. Check the operation of the solenoid valve
  3. Check the fan for serviceability
  4. Replace damaged components

Related codes

B2920B2921

FAQ

What does the B2919 code mean?

B2919 is an OBD-II diagnostic trouble code that indicates: Auxiliary Blower Motor Speed Input Circuit Short To Voltage

What causes a B2919 error code?

The most common causes of B2919 include: Wiring harness damage; Solenoid valve malfunction; Problems with the fan itself; Short circuit in control circuit.

How do I fix a B2919 diagnostic trouble code?

To fix B2919: Check wiring harness for damage. Check the operation of the solenoid valve. Check the fan for serviceability. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2919?

Limited driving only, diagnose soon

How much does it cost to fix B2919?

The estimated repair cost for B2919 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat