B2563 Code - Auxiliary Blower Motor Speed Relay 2 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 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
- B2563 indicates Auxiliary Blower Motor Speed Relay 2 Circuit Short To Voltage.
- 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 B2563 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 B2563?
- 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 B2563?
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 B2563 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 B2563 code?
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Information for Specific Makes
- B2563 Chrysler — Power Sliding Switch Circuit High
- B2563 Dodge — Power Sliding Switch Circuit High
- B2563 Ford — Auxiliary Blower Motor Speed Relay 2 Circuit Short To Voltage
- B2563 Infiniti — High Voltage To Body Control Module
- B2563 Lincoln — Auxiliary Blower Motor Speed Relay 2 Circuit Short To Voltage
- B2563 Mercury — Auxiliary Blower Motor Speed Relay 2 Circuit Short To Voltage
- B2563 Nissan — High Voltage To Body Control Module
Frequently Asked Questions about B2563 Code
What does the OBDII code B2563 indicate?
The B2563 code indicates a problem with the Auxiliary Blower Motor Speed Relay 2 Circuit, specifically a short to voltage condition.
What are common symptoms associated with the B2563 code?
Common symptoms include the auxiliary blower motor not functioning, erratic blower speed, or the blower running continuously even when the vehicle is off.
What could cause the B2563 code to trigger?
Possible causes include a faulty auxiliary blower motor speed relay, damaged wiring or connectors, or a malfunctioning blower motor itself.
How can I diagnose the B2563 code?
To diagnose B2563, check the auxiliary blower motor speed relay and wiring for shorts or damage, use a multimeter to test the relay operation, and inspect the blower motor for proper function.
Is it safe to drive with the B2563 code present?
While it may be safe to drive, you might experience issues with cabin air circulation and comfort. It's advisable to address the code to avoid further electrical problems.
What are some common repair solutions for the B2563 code?
Common repairs include replacing the faulty auxiliary blower motor speed relay, repairing or replacing damaged wiring, and ensuring proper connections in the circuit.
Can I clear the B2563 code without fixing the issue?
Yes, you can clear the code with an OBDII scanner, but the code is likely to reappear if the underlying issue is not resolved.
Will the B2563 code affect my vehicle's performance?
While it primarily affects the HVAC system, poor performance of the blower motor can lead to reduced cabin comfort, especially in extreme weather conditions.
How much does it typically cost to repair the B2563 code?
Repair costs can vary widely, but replacing a relay is usually inexpensive, while more extensive wiring repairs may cost more depending on labor rates and parts needed.
Discuss the causes and fixes for B2563 OBDII Code
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