AutoCodes – Generic – B2989

B2989 Code - A/C Compressor Motor

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: B2989 indicates A/C Compressor Motor.
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 1,048

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 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2989 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 B2989 - A/C Compressor Motor - AutoCodes.com — B2989 Code - A/C Compressor Motor

What does this mean?

What are the Possible Causes of the DTC B2989?

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 B2989?

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 B2989 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 B2989 code?

Need more information on how to fix the B2989 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2989 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2989 Acura — A/C Compressor Motor
B2989 Honda — A/C Compressor Motor

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 B2989 Code

1. What are common symptoms of OBDII code B2989 related to the A/C Compressor Motor?

The common symptoms include the A/C system not cooling properly, unusual noises coming from the compressor, or the A/C not working at all.

2. What can cause OBDII code B2989 related to the A/C Compressor Motor?

The code B2989 can be triggered by issues such as a faulty A/C compressor motor, damaged wiring or connectors, low refrigerant levels, or a malfunctioning A/C pressure switch.

3. How can I diagnose the cause of OBDII code B2989 for the A/C Compressor Motor?

You can diagnose the issue by conducting a visual inspection of the A/C compressor motor, checking the wiring and connectors for any damage, verifying refrigerant levels, and testing the A/C pressure switch.

4. Can a DIYer repair OBDII code B2989 associated with the A/C Compressor Motor?

Depending on your automotive repair skills, you may be able to address simpler issues like replacing a damaged connector or topping up refrigerant. However, more complex repairs involving the A/C compressor motor may require professional assistance.

5. Are there any safety precautions to keep in mind when working on the A/C Compressor Motor related to code B2989?

Yes, always ensure the engine is off and the A/C system is depressurized before attempting any repairs. Additionally, it's recommended to wear appropriate protective gear when handling refrigerant.

6. How much does it typically cost to repair OBDII code B2989 linked to the A/C Compressor Motor?

The cost of repair can vary depending on the specific issue causing the code. Simple fixes like replacing a connector may cost less, while replacing the A/C compressor motor can be more expensive.

7. Can ignoring OBDII code B2989 related to the A/C Compressor Motor cause further damage to the vehicle?

Continuing to operate the vehicle with a faulty A/C compressor motor can lead to decreased A/C performance, potential damage to other A/C components, and increased strain on the engine.

8. Will resetting the OBDII code B2989 associated with the A/C Compressor Motor make the issue go away?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.

9. Is it possible for a loose electrical connection to trigger OBDII code B2989 for the A/C Compressor Motor?

Yes, a loose or damaged electrical connection to the A/C compressor motor can disrupt its operation and trigger the code B2989. It's important to check and secure all connections during diagnosis.

10. Can extreme weather conditions contribute to triggering OBDII code B2989 related to the A/C Compressor Motor?

Extreme heat or cold can impact the performance of the A/C system and potentially lead to issues with the A/C compressor motor, which may trigger the code B2989. Regular maintenance can help prevent these issues.