AutoCodes – Generic – B2561

B2561 Code - Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage

Quick Answer

Under normal operation, ground for the blower motor is provided through the circuit from the blower motor resistor (LO and MED-LO) and the blower motor speed relay 1 (MED-HI and HI). Common causes include Faulty Auxiliary Blower Motor Speed Relay 1, Auxiliary Blower Motor Speed Relay 1 harness is open or shorted, Auxiliary Blower Motor Speed Relay 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B2561 indicates Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage.
Common causes: Common causes include Faulty Auxiliary Blower Motor Speed Relay 1, Auxiliary Blower Motor Speed Relay 1 harness is open or shorted, Auxiliary Blower Motor Speed Relay 1 circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,148

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2561 Description

Under normal operation, ground for the blower motor is provided through the circuit from the blower motor resistor (LO and MED-LO) and the blower motor speed relay 1 (MED-HI and HI). The blower resistor is grounded through the circuit. The blower motor speed relay coils are supplied through the circuit. Blower motor speed is received by the SJB from the rear auxiliary control through the circuit. Reference voltage for the blower speed selector resistor is provided by the SJB through the circuit. The auxiliary blower motor relay coil receives ground from the Smart Junction Box (SJB) through the circuit if any blower switch position but OFF is selected.
In LO, ground for the blower motor is provided through the blower motor resistor.
In MED-LO, blower motor speed relay 2 is grounded by the SJB through the circuit. Blower motor ground circuit is connected through one half of the blower motor resistor to the circuit. The circuit is connected through the blower motor speed relay 2 to the blower motor resistor ground circuit.
In MED-HI, blower motor speed relay 1 is grounded by the SJB through the circuit. Blower motor ground circuit is connected through blower motor speed relay 2 to the circuit. The circuit is connected through one half of the blower motor resistor to the blower motor resistor ground circuit.
In HI, blower motor speed relays 1 and 2 are grounded by the SJB through the circuit. Blower motor ground circuit 515 (OG/RD) is connected through the blower motor speed relay 1 to the circuit. The circuit is connected through the blower motor speed relay 2 to the blower motor resistor ground circuit.

OBDII Code B2561 - Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage - AutoCodes.com — B2561 Code - Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage

What does this mean?

What are the Possible Causes of the DTC B2561?

Faulty Auxiliary Blower Motor Speed Relay 1
Auxiliary Blower Motor Speed Relay 1 harness is open or shorted
Auxiliary Blower Motor Speed Relay 1 circuit poor electrical connection
Faulty Blower Motor Resistor
Faulty Smart Junction Box (SJB)

How to Fix the DTC B2561?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2561 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B2561 code?

Need more information on how to fix the B2561 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2561 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2561 Ford — Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage
B2561 Lincoln — Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage
B2561 Mercury — Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2561 Code

1. What are the common symptoms of OBDII code B2561?

- Common symptoms of OBDII code B2561 include a malfunctioning auxiliary blower motor, erratic blower motor operation, and a check engine light illuminating on the dashboard.

2. What can cause the Auxiliary Blower Motor Speed Relay 1 Circuit Short To Voltage code B2561?

- The B2561 code is typically caused by a short circuit in the wiring or connectors related to the auxiliary blower motor speed relay, a faulty blower motor speed relay, or a malfunctioning blower motor.

3. How can I diagnose the issue related to OBDII code B2561?

- To diagnose the issue, you can use a diagnostic scanner to read the code, visually inspect the wiring and connectors for any signs of damage, test the blower motor speed relay, and check the blower motor for proper operation.

4. Is it safe to continue driving with OBDII code B2561 active?

- It is not recommended to continue driving with the B2561 code active, as it can lead to issues with the heating, ventilation, and air conditioning system, affecting the comfort and safety of the vehicle occupants.

5. How can I repair OBDII code B2561 on my own?

- Repairing the B2561 code may involve replacing the faulty auxiliary blower motor speed relay, repairing any damaged wiring or connectors, or replacing the blower motor if necessary. It is recommended to have the repair done by a qualified mechanic if you are not experienced in automotive electrical systems.

6. Can a blown fuse cause OBDII code B2561 to appear?

- Yes, a blown fuse related to the auxiliary blower motor circuit can cause OBDII code B2561 to appear. It is important to check and replace any blown fuses before further troubleshooting the issue.

7. Will resetting the OBDII system clear the B2561 code?

- Resetting the OBDII system may temporarily clear the B2561 code, but if the underlying issue causing the code is not addressed, the code is likely to reappear once the problem is detected again.

8. How much does it typically cost to repair OBDII code B2561 at a repair shop?

- The cost of repairing OBDII code B2561 at a repair shop can vary depending on the specific cause of the issue, the labor rates in your area, and the cost of any replacement parts needed. It is recommended to get a diagnosis from a mechanic to receive an accurate cost estimate.

9. Can OBDII code B2561 affect the performance of my vehicle?

- While the B2561 code directly relates to the auxiliary blower motor system, ignoring the issue can lead to decreased comfort and potentially affect the overall performance of the vehicle's heating, ventilation, and air conditioning system.

10. Is OBDII code B2561 a common issue in specific vehicle makes or models?

- The B2561 code can occur in various vehicle makes and models that are equipped with an auxiliary blower motor system. It is not specific to a particular manufacturer but can be more common in vehicles with advanced climate control systems.