B27BC Code - Electric Compressor Communication Error
Quick Answer
The Diagnostic Trouble Code (DTC) sets when the electric compressor cannot receive the signal transmitted from the A/C Auto Amplifier. 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
- B27BC indicates Electric Compressor Communication Error.
- 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 B27BC Description
What are the Possible Causes of the DTC B27BC?
- Faulty Electric Compressor
- Electric Compressor harness is open or shorted
- Electric Compressor circuit poor electrical connection
- Faulty A/C Auto Amplifier
- Faulty Power Delivery Module (PDM)
How to Fix the DTC B27BC?
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 B27BC 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 B27BC code?
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Need Help with the Code?
Get the B27BC code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B27BC Infiniti — Electric Compressor Communication Error
- B27BC Nissan — Electric Compressor Communication Error
Frequently Asked Questions about B27BC Code
1. What does the OBDII code B27BC mean?
The B27BC code indicates an Electric Compressor Communication Error, meaning the vehicle's control system is unable to communicate properly with the electric compressor.
2. What are the common symptoms of the B27BC code?
Symptoms may include a malfunctioning air conditioning system, reduced cooling performance, an illuminated check engine light, or error messages related to the HVAC system.
3. What causes the B27BC code to appear?
Common causes include faulty wiring or connectors, a malfunctioning electric compressor, software issues in the control module, or a failed communication circuit.
4. Can I still drive my car with the B27BC code?
Yes, you can typically drive the car, but the air conditioning system may not function properly, which can cause discomfort in hot weather.
5. How is the B27BC code diagnosed?
A technician will use a scan tool to verify the code, inspect the compressor wiring and connectors, and test the communication circuit for continuity or faults.
6. Can a low refrigerant level cause the B27BC code?
No, a low refrigerant level doesn’t directly cause this code, but it could lead to compressor issues that might contribute to communication errors.
7. How can I fix the B27BC code?
Repairs may involve fixing or replacing damaged wiring, reconnecting loose connectors, updating software, or replacing the electric compressor if it’s faulty.
8. Is the B27BC code expensive to repair?
Costs vary depending on the issue; repairing wiring or connectors is generally inexpensive, but replacing the electric compressor can be costly.
9. Can I clear the B27BC code without fixing the issue?
Clearing the code without addressing the underlying problem may temporarily turn off the warning light, but the code will likely return as the problem persists.
10. What preventive measures can help avoid the B27BC code?
Regular maintenance, inspecting wiring and connectors for damage, and ensuring the software is up-to-date can help prevent this code from appearing.
Discuss the causes and fixes for B27BC OBDII Code
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