B2644 Code - Electric Compressor Output Line Open
Quick Answer
The Inverter in the electric compressor outputs high-voltage to operate the motor. Common causes include Faulty Electric Compressor, Electric Compressor harness is open or shorted, Electric Compressor 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
- B2644 indicates Electric Compressor Output Line Open.
- Common causes
- Common causes include Faulty Electric Compressor, Electric Compressor harness is open or shorted, Electric Compressor 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 B2644 Description
What are the Possible Causes of the DTC B2644?
- Faulty Electric Compressor
- Electric Compressor harness is open or shorted
- Electric Compressor circuit poor electrical connection
- Faulty Inverter
How to Fix the DTC B2644?
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 B2644 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 B2644 code?
Need more information on how to fix the B2644 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B2644 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B2644 Infiniti — Electric Compressor Output Line Open
- B2644 Nissan — Electric Compressor Output Line Open
Frequently Asked Questions about B2644 Code
1. What does OBDII code B2644 mean?
B2644 indicates an open circuit in the electric compressor output line, which can prevent the air conditioning system from functioning properly.
2. What are the common symptoms of code B2644?
Common symptoms include the air conditioning system not cooling, an illuminated HVAC warning light, or no response from the compressor.
3. What causes the B2644 code to appear?
The code is typically caused by a damaged wiring harness, a disconnected or corroded connector, or a faulty electric compressor.
4. How can I diagnose the B2644 code?
Start by inspecting the wiring and connectors to the electric compressor for damage or corrosion. Use a multimeter to check for continuity in the output line.
5. Can I still drive my vehicle with code B2644?
Yes, but your air conditioning system may not function, which can affect comfort and defogging capability in certain conditions.
6. How is the B2644 code typically repaired?
Repairs may include fixing or replacing damaged wiring, cleaning or reconnecting connectors, or replacing the electric compressor if it’s faulty.
7. How much does it cost to fix the B2644 code?
Costs vary depending on the issue, ranging from a simple wiring repair (around $100) to replacing the electric compressor (up to $1,500 or more).
8. Can a blown fuse cause the B2644 code?
Yes, a blown fuse in the A/C system circuit can sometimes lead to this code, so checking fuses is a good first step.
9. Will clearing the B2644 code fix the problem?
Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return.
10. Do I need a professional to fix the B2644 code?
If you're experienced with electrical diagnostics, you can attempt repairs yourself. Otherwise, it’s best to consult a professional technician.
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