AutoCodes – Acura – B2990 Acura

B2990 Acura 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 Acura 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.

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Code Popularity 850

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Feb 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2990 Acura Description

The Climate Control Unit monitors the A/C Compressor Motor. The Climate Control Unit sets the OBDII code when the A/C Compressor Motor is not to factory specifications.

OBDII Code B2990 Acura - A/C Compressor Driving Circuit - AutoCodes.com — B2990 Acura Code - A/C Compressor Driving Circuit

What does this mean?

What are the Possible Causes of the DTC B2990 Acura?

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 Acura?

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 Acura 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 B2990 Acura code?

Need more information on how to fix the B2990 Acura code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2990 Acura code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2990 Acura Code

1. What does the OBDII code B2990 for Acura A/C Compressor Driving Circuit indicate?

The B2990 code specifically relates to a fault in the A/C compressor driving circuit within the Acura's electronic control system.

2. What are common symptoms of the B2990 code on an Acura?

Common symptoms of the B2990 code may include the A/C system not functioning properly, warm air blowing from the vents, or the A/C compressor not engaging.

3. What are possible causes of the B2990 code in an Acura?

Potential causes of the B2990 code include a faulty A/C compressor clutch, damaged wiring or connectors in the circuit, or a malfunctioning A/C control module.

4. How can I diagnose the B2990 code in my Acura?

Diagnosing the B2990 code typically involves using a diagnostic scanner to retrieve the code, inspecting the A/C compressor and related components for damage, and testing the electrical connections in the circuit.

5. Can I continue driving my Acura with the B2990 code present?

It is not recommended to drive your Acura with the B2990 code active, as it can lead to further damage to the A/C system and potentially affect other vehicle functions.

6. How can I repair the B2990 code on my Acura?

Repairing the B2990 code may involve replacing the A/C compressor clutch, repairing damaged wiring or connectors, or resetting the A/C control module after addressing any underlying issues.

7. Will resetting the OBDII system clear the B2990 code from my Acura?

Resetting the OBDII system may temporarily clear the B2990 code, but it is essential to address the root cause of the issue to prevent the code from reoccurring.

8. Is the B2990 code specific to certain Acura models?

The B2990 code can be specific to certain Acura models, so it is important to consult your vehicle's specific diagnostic manual or contact a professional for accurate information.

9. Can a DIY enthusiast repair the B2990 code on an Acura?

While some aspects of diagnosing and repairing the B2990 code may be within reach of a skilled DIY enthusiast, it is recommended to seek assistance from a qualified mechanic for complex electrical issues.

10. How much can I expect to pay to repair the B2990 code on my Acura?

The cost of repairing the B2990 code on an Acura can vary depending on the extent of the issue, parts needed for replacement, and labor costs. It's advisable to obtain quotes from different repair shops for an accurate estimate.