AutoCodes – Ford – B2564 Ford

B2564 Ford Code - Auxiliary Blower Motor Speed Relay 2 Circuit Open/Short To Ground

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 2, Auxiliary Blower Motor Speed Relay 2 harness is open or shorted, Auxiliary Blower Motor Speed Relay 2 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: B2564 Ford indicates Auxiliary Blower Motor Speed Relay 2 Circuit Open/Short To Ground.
Common causes: Common causes include Faulty Auxiliary Blower Motor Speed Relay 2, Auxiliary Blower Motor Speed Relay 2 harness is open or shorted, Auxiliary Blower Motor Speed Relay 2 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.

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Code Popularity 886

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
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Code B2564 Ford 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 B2564 Ford - Auxiliary Blower Motor Speed Relay 2 Circuit Open/Short To Ground - AutoCodes.com — B2564 Ford Code - Auxiliary Blower Motor Speed Relay 2 Circuit Open/Short To Ground

What does this mean?

What are the Possible Causes of the DTC B2564 Ford?

Faulty Auxiliary Blower Motor Speed Relay 2
Auxiliary Blower Motor Speed Relay 2 harness is open or shorted
Auxiliary Blower Motor Speed Relay 2 circuit poor electrical connection
Faulty Blower Motor Resistor
Faulty Smart Junction Box (SJB)

How to Fix the DTC B2564 Ford?

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 B2564 Ford 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 B2564 Ford code?

Need more information on how to fix the B2564 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2564 Ford code diagnosed by a professional: Find a repair shop in your area

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 B2564 Ford Code

1. What are the common symptoms of OBDII code B2564 in a Ford related to the Auxiliary Blower Motor Speed Relay 2 Circuit?

The common symptoms include issues with the auxiliary blower motor operation, such as inconsistent speed, failure to start, or complete lack of function.

2. What causes the OBDII code B2564 in a Ford indicating an Auxiliary Blower Motor Speed Relay 2 Circuit Open/Short To Ground?

This code is typically triggered by a wiring issue, such as a short to ground or an open circuit in the auxiliary blower motor speed relay 2 circuit.

3. How can I diagnose the OBDII code B2564 in a Ford related to the Auxiliary Blower Motor Speed Relay 2 Circuit?

Diagnosing this code involves inspecting the wiring harness, connectors, and relay associated with the auxiliary blower motor speed relay 2 circuit for any signs of damage or disconnection.

4. What are some repair tips for addressing the OBDII code B2564 in a Ford for the Auxiliary Blower Motor Speed Relay 2 Circuit?

Repair tips include checking and repairing any damaged wiring, ensuring proper connection of the relay, and using a multimeter to test the circuit for continuity and resistance.

5. Can I continue driving my Ford with the OBDII code B2564 related to the Auxiliary Blower Motor Speed Relay 2 Circuit issue?

It is not recommended to drive the vehicle with this code present, as it can lead to further issues with the blower motor operation and potentially affect the vehicle's heating and cooling system.

6. Is it possible to reset the OBDII code B2564 in a Ford without repairing the issue with the Auxiliary Blower Motor Speed Relay 2 Circuit?

While you can clear the code temporarily, it will likely reappear until the underlying issue with the auxiliary blower motor speed relay 2 circuit is properly addressed.

7. How much does it typically cost to repair the OBDII code B2564 in a Ford related to the Auxiliary Blower Motor Speed Relay 2 Circuit?

The cost of repair can vary depending on the extent of the wiring damage and whether any components need to be replaced, but it is advisable to consult a professional for an accurate estimate.

8. Can a DIY enthusiast with basic automotive knowledge fix the OBDII code B2564 in a Ford themselves?

Depending on your level of experience and access to tools, a DIY enthusiast may be able to address this issue by following a repair guide specific to the Ford model experiencing the code.

9. Are there any preventative measures to avoid encountering the OBDII code B2564 in a Ford for the Auxiliary Blower Motor Speed Relay 2 Circuit in the future?

Regularly inspecting the wiring harness, connectors, and relays associated with the auxiliary blower motor system can help prevent issues that could trigger this code.

10. Will fixing the OBDII code B2564 in a Ford improve the overall performance of the vehicle's heating and cooling system?

Yes, resolving this code will ensure that the auxiliary blower motor operates correctly, which is essential for maintaining optimal performance of the vehicle's heating and cooling system.