B2990 Honda Code - A/C Compressor Driving Circuit
Quick Answer
The Climate Control Unit monitors the A/C Compressor Motor. Common causes include Faulty A/C Compressor Motor, A/C Compressor Motor harness is open or shorted, A/C Compressor Motor 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
- B2990 Honda indicates A/C Compressor Driving Circuit.
- Common causes
- Common causes include Faulty A/C Compressor Motor, A/C Compressor Motor harness is open or shorted, A/C Compressor Motor 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 B2990 Honda Description
What are the Possible Causes of the DTC B2990 Honda?
- Faulty A/C Compressor Motor
- A/C Compressor Motor harness is open or shorted
- A/C Compressor Motor circuit poor electrical connection
How to Fix the DTC B2990 Honda?
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 B2990 Honda 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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Frequently Asked Questions about B2990 Honda Code
1. What does code B2990 mean on a Honda vehicle?
B2990 indicates an issue with the A/C Compressor Driving Circuit, which controls the operation of the air conditioning compressor.
2. What are common symptoms of the B2990 code in a Honda?
Symptoms may include the A/C not blowing cold air, the A/C compressor not engaging, or the A/C system functioning intermittently.
3. What causes the B2990 code to trigger?
Common causes include a faulty A/C compressor, damaged wiring or connectors in the A/C circuit, a malfunctioning compressor clutch relay, or a defective climate control module.
4. Can a blown fuse cause the B2990 code?
Yes, a blown fuse in the A/C compressor circuit can interrupt power and trigger the B2990 code.
5. How do you diagnose the B2990 code?
Diagnosis involves checking for blown fuses, inspecting the wiring and connectors for damage, testing the A/C compressor clutch relay, and verifying power and ground to the A/C compressor.
6. Can I still drive my Honda with the B2990 code present?
Yes, you can drive the vehicle, but the A/C system may not function properly, which could be uncomfortable in hot weather.
7. How do you fix the B2990 code on a Honda?
Repairs may include replacing the A/C compressor, repairing or replacing damaged wiring, replacing the compressor clutch relay, or reprogramming or replacing the climate control module.
8. Is the B2990 code specific to Honda vehicles?
While the code can apply to other manufacturers, its definition and specific diagnostic steps may vary. Always refer to Honda-specific repair information.
9. How much does it cost to repair the B2990 code?
Repair costs depend on the issue but may range from $100 for wiring repairs to over $1,000 for A/C compressor replacement.
10. Can low refrigerant levels cause the B2990 code?
Low refrigerant levels typically do not directly cause this code, but they can lead to A/C system problems that might trigger related issues.
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