OBD Guide
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B2561

Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage

B2561 is an OBD-II diagnostic trouble code meaning: Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage. Common causes: faulty fan speed relay, short circuit in wiring harness. 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
  • Engine overheating
  • Insufficient interior heating
  • Check engine light comes on

Causes

  • Faulty fan speed relay
  • Short circuit in wiring harness
  • Damage to the solenoid valve
  • Problems with the engine control unit (ECU)

How to Fix

  1. Check the auxiliary fan speed relay
  2. Inspect the wiring harness for damage
  3. Check the solenoid valve
  4. Test the engine control unit (ECU)
  5. Replace faulty components

Related codes

B2560B2562P0480

FAQ

What does the B2561 code mean?

B2561 is an OBD-II diagnostic trouble code that indicates: Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage

What causes a B2561 error code?

The most common causes of B2561 include: Faulty fan speed relay; Short circuit in wiring harness; Damage to the solenoid valve; Problems with the engine control unit (ECU).

How do I fix a B2561 diagnostic trouble code?

To fix B2561: Check the auxiliary fan speed relay. Inspect the wiring harness for damage. Check the solenoid valve. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2561?

Limited driving only, diagnose soon

How much does it cost to fix B2561?

The estimated repair cost for B2561 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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