B2559 Code - Aux A/C Blower Motor Relay Circuit Short to Battery
Quick Answer
The Body Control Module (BCM) monitors the Aux A/C Blower Motor Relay. Common causes include Faulty Aux A/C Blower Motor Relay, Aux A/C Blower Motor Relay harness is open or shorted, Aux A/C Blower Motor Relay 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
- B2559 indicates Aux A/C Blower Motor Relay Circuit Short to Battery.
- Common causes
- Common causes include Faulty Aux A/C Blower Motor Relay, Aux A/C Blower Motor Relay harness is open or shorted, Aux A/C Blower Motor Relay 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 B2559 Description
What are the Possible Causes of the DTC B2559?
- Faulty Aux A/C Blower Motor Relay
- Aux A/C Blower Motor Relay harness is open or shorted
- Aux A/C Blower Motor Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B2559?
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 B2559 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.
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Information for Specific Makes
- B2559 Infiniti — Power Distribution Unit Internal Malfunction
- B2559 Nissan — Power Distribution Unit Internal Malfunction
Frequently Asked Questions about B2559 Code
1. What does the OBDII code B2559 mean?
The code B2559 indicates a short circuit to the battery in the auxiliary A/C blower motor relay circuit, which may cause improper functioning of the blower motor.
2. What are the common symptoms of code B2559?
Symptoms can include the auxiliary A/C blower not working, running constantly, or functioning intermittently, as well as possible electrical issues or a drained battery.
3. What causes the B2559 code to trigger?
This code is typically caused by damaged wiring, a faulty blower motor relay, a short circuit in the wiring harness, or a defective auxiliary A/C blower motor.
4. How is the B2559 code diagnosed?
A mechanic will inspect the wiring and connections in the auxiliary A/C blower motor circuit, test the relay for faults, and use a multimeter to check for short circuits to the battery.
5. Can I drive my car with the B2559 code?
While the car may still be drivable, ignoring this code could lead to further electrical damage or a drained battery, so it’s best to address it promptly.
6. How do I fix the B2559 code?
Repairs may involve replacing the faulty blower motor relay, repairing or replacing damaged wiring, or, in some cases, replacing the auxiliary A/C blower motor.
7. How much does it cost to fix the B2559 code?
The repair cost varies depending on the cause, but it typically ranges from $100 to $300, including parts and labor.
8. Can a blown fuse cause the B2559 code?
A blown fuse may not directly cause this code, but it could indicate an underlying electrical issue in the blower motor circuit that needs to be addressed.
9. What tools are needed to diagnose the B2559 code?
Basic tools include a diagnostic scanner, a multimeter for checking electrical continuity, and wiring diagrams specific to your vehicle.
10. Is the B2559 code specific to certain vehicle models?
No, this code can appear in various vehicle makes and models equipped with an auxiliary A/C blower system, but the exact circuit layout may differ.
Discuss the causes and fixes for B2559 OBDII Code
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