Engine-CodesLincoln – B2564 Lincoln

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

Quick Answer

The B2564 diagnostic trouble code (DTC) for Lincoln vehicles refers to the Auxiliary Blower Motor Speed Relay 2 Circuit Open/Short To Ground. Common causes include Faulty auxiliary blower motor speed relay, Short or open circuit in the wiring, Defective blower motor. 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 Lincoln indicates Auxiliary Blower Motor Speed Relay 2 Circuit Open/Short To Ground.
Common causes
Common causes include Faulty auxiliary blower motor speed relay, Short or open circuit in the wiring, Defective blower motor.
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.
Table of contents Created and updated by William Orellana on Sep 30, 2024
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Code B2564 Lincoln Description

The B2564 diagnostic trouble code (DTC) for Lincoln vehicles refers to the Auxiliary Blower Motor Speed Relay 2 Circuit Open/Short To Ground. This code indicates that there is an issue with the auxiliary blower motor speed relay circuit, specifically that it is either open or shorted to ground. The auxiliary blower motor is responsible for helping to circulate air within the HVAC system of the vehicle, providing additional cooling or heating as needed. When this circuit is compromised, it can lead to a variety of issues with the vehicle's climate control system.

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

Common Causes of B2564 Lincoln

  1. Faulty auxiliary blower motor speed relay
  2. Short or open circuit in the wiring
  3. Defective blower motor
  4. Malfunctioning HVAC control module
  5. Corrosion or damage to electrical connections

Symptoms of B2564 Lincoln

  1. Lack of airflow from the HVAC vents
  2. Inconsistent temperature control within the cabin
  3. Unusual noises coming from the HVAC system
  4. HVAC system not responding to controls
  5. HVAC system only working on certain settings

How to Fix B2564 Lincoln

  1. Begin by diagnosing the issue using a diagnostic scanner to retrieve the specific trouble code and pinpoint the exact cause of the problem.
  2. Inspect the auxiliary blower motor speed relay, wiring, and connections for any signs of damage, corrosion, or wear.
  3. Test the blower motor to ensure it is functioning correctly and replace it if necessary.
  4. Check the HVAC control module for any faults or malfunctions and replace it if needed.
  5. Clear the trouble code from the vehicle's computer system and test the HVAC system to ensure the issue has been resolved.

Cost to Fix B2564 Lincoln

The typical repair costs for addressing the B2564 code on a Lincoln vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $500. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It is advisable to consult with a professional technician for a more accurate cost estimate based on the specific circumstances of the vehicle.

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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 Lincoln Code

1. What does the OBDII code B2564 mean on a Lincoln?

The code B2564 indicates an issue with the Auxiliary Blower Motor Speed Relay 2 Circuit, which may be open or shorted to ground.

2. What are the common symptoms of the B2564 code?

Symptoms may include a non-functional auxiliary blower motor, inconsistent climate control performance, or unusual noises from the blower motor system.

3. What causes the B2564 code to appear?

The code can be triggered by a faulty relay, damaged wiring, a blown fuse, or a malfunctioning auxiliary blower motor.

4. Can I still drive my Lincoln with the B2564 code?

Yes, you can drive the vehicle, but your cabin climate control system may not work properly, which could be inconvenient in extreme weather.

5. How do you diagnose the B2564 code?

Diagnosis involves checking the relay, wiring, and connections for damage or corrosion and testing the auxiliary blower motor for proper operation.

6. How can I fix the B2564 code on my Lincoln?

Repairs may include replacing a faulty relay, repairing or replacing damaged wiring, or replacing the auxiliary blower motor if it's defective.

7. Is the B2564 code specific to Lincoln vehicles?

While the code is common in Lincoln vehicles, it may also appear in other Ford models with similar systems.

8. How much does it cost to fix the B2564 code?

Repair costs can vary but generally range from $50 to $200 depending on whether the issue lies with the relay, wiring, or blower motor itself.

9. What tools are needed to troubleshoot the B2564 code?

You’ll need a multimeter, a diagnostic scan tool, and possibly basic tools to access the relay and wiring.

10. Can I clear the B2564 code without fixing the issue?

Clearing the code without addressing the root cause will likely result in the code returning once the system detects the fault again.

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