B2564 Lincoln 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 Lincoln 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.
Code B2564 Lincoln Description
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.
What are the Possible Causes of the DTC B2564 Lincoln?
- 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 Lincoln?
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 Lincoln 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 Lincoln code?
Need more information on how to fix the B2564 Lincoln code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B2564 Lincoln code diagnosed by a professional: Find a repair shop in your area
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.
Discuss the causes and fixes for B2564 Lincoln OBDII Code
Code B2564 Lincoln comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
