B27CD Code - Electric Compressor Motor Current Limit
Quick Answer
The Diagnostic Trouble Code (DTC) sets when the command speed control is disabled due to a decrease of motor upper limit. Common causes include Faulty Electric Compressor, Faulty Li-ion Battery, Refrigerant insufficient or overfilled. 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
- B27CD indicates Electric Compressor Motor Current Limit.
- Common causes
- Common causes include Faulty Electric Compressor, Faulty Li-ion Battery, Refrigerant insufficient or overfilled.
- 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 B27CD Description
What are the Possible Causes of the DTC B27CD?
- Faulty Electric Compressor
- Faulty Li-ion Battery
- Refrigerant insufficient or overfilled
- Faulty Cooling Fan
How to Fix the DTC B27CD?
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 B27CD 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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Need Help with the Code?
Get the B27CD code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B27CD Infiniti — Electric Compressor Motor Current Limit
- B27CD Nissan — Electric Compressor Motor Current Limit
Frequently Asked Questions about B27CD Code
1. What does the OBDII code B27CD mean?
B27CD refers to an issue where the electric compressor motor current is being limited, potentially indicating a problem with the motor, control circuit, or related components.
2. What are common symptoms of the B27CD code?
Symptoms may include reduced air conditioning performance, unusual noises from the compressor, or the air conditioning system not functioning at all.
3. What causes the B27CD code to appear?
This code can be triggered by a faulty electric compressor, wiring issues, a malfunctioning control module, or excessive current draw due to mechanical or electrical resistance.
4. Can I still drive my car with the B27CD code?
Yes, you can typically drive your car, but the air conditioning system may not work properly, and ignoring the issue could lead to further damage.
5. How is the B27CD code diagnosed?
A technician will use a scan tool to verify the code, inspect the compressor and related wiring, and test the system for electrical resistance or mechanical failures.
6. What repairs might fix the B27CD code?
Repairs could include replacing a faulty electric compressor, repairing damaged wiring or connections, or reprogramming or replacing the control module.
7. How much does it cost to fix the B27CD code?
Repair costs vary depending on the root cause but can range from $300 to $1,500 or more, especially if the compressor needs replacement.
8. Can a low refrigerant level cause the B27CD code?
Low refrigerant levels typically don’t cause this specific code but may contribute to the compressor overworking, which could eventually lead to related issues.
9. Is the B27CD code specific to certain car makes or models?
This code is more commonly seen in vehicles with electric compressors, such as hybrid or electric cars, but it can occur in any vehicle with an electric air conditioning system.
10. Will clearing the B27CD code with a scan tool fix the problem?
Clearing the code may temporarily remove the warning, but the underlying issue must be addressed to prevent the code from reappearing.
Discuss the causes and fixes for B27CD OBDII Code
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