AutoCodes – Generic – B2651

B2651 Code - Electric Compressor Inverter Overheat

Quick Answer

The temperature sensor of the Electric Compressor detects inverter temperature. Common causes include Refrigerant Gas Leakage, Overcharged Refrigerant Gas, Condenser Fan Circuit Malfunction. 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
B2651 indicates Electric Compressor Inverter Overheat.
Common causes
Common causes include Refrigerant Gas Leakage, Overcharged Refrigerant Gas, Condenser Fan Circuit Malfunction.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,852
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 13, 2020
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Code B2651 Description

The temperature sensor of the Electric Compressor detects inverter temperature. If the temperature exceeds the maximum, the electric compressor stops compressor operation, and this Diagnostic Trouble Code (DTC) will be output.
OBDII Code B2651 - Electric Compressor Inverter Overheat - AutoCodes.com
B2651 Code - Electric Compressor Inverter Overheat

What are the Possible Causes of the DTC B2651?

  • Refrigerant Gas Leakage
  • Overcharged Refrigerant Gas
  • Condenser Fan Circuit Malfunction
  • Faulty Electric Compressor
  • Electric Compressor harness is open or shorted
  • Electric Compressor circuit poor electrical connection

How to Fix the DTC B2651?

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 B2651 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 B2651 code?

Need more information on how to fix the B2651 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2651 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 B2651 Code

1. What are the common symptoms of OBDII code B2651 Electric Compressor Inverter Overheat?

The common symptoms include air conditioning system malfunction, reduced cooling performance, and potentially a warning light on the dashboard.

2. What are the possible causes of OBDII code B2651 Electric Compressor Inverter Overheat?

Potential causes include a faulty electric compressor inverter, overheating due to system overload, electrical issues, or problems with the air conditioning system components.

3. How can I diagnose OBDII code B2651 Electric Compressor Inverter Overheat?

Diagnosis typically involves using a professional OBDII scanner to read the code, checking the air conditioning system for any visible issues, and inspecting the electric compressor inverter for overheating or malfunction.

4. What are some repair tips for addressing OBDII code B2651 Electric Compressor Inverter Overheat?

Repair tips may include replacing the faulty electric compressor inverter, ensuring proper cooling system operation, checking and repairing any electrical issues, and clearing the code with an OBDII scanner after the repairs are made.

5. Can OBDII code B2651 Electric Compressor Inverter Overheat be dangerous if left unaddressed?

Leaving this issue unresolved can potentially lead to further damage to the air conditioning system components, reduced cooling performance, and in some cases, safety hazards due to overheating.

6. How urgent is it to fix OBDII code B2651 Electric Compressor Inverter Overheat?

It is recommended to address this issue as soon as possible to prevent further damage to the air conditioning system and ensure safe operation of the vehicle, especially during hot weather conditions.

7. Are there any preventive measures to avoid OBDII code B2651 Electric Compressor Inverter Overheat?

Regular maintenance of the air conditioning system, checking for any unusual sounds or smells, and addressing any cooling system issues promptly can help prevent the occurrence of this code.

8. Can a DIY enthusiast repair OBDII code B2651 Electric Compressor Inverter Overheat?

While some basic troubleshooting and maintenance tasks can be performed by DIY enthusiasts, diagnosing and repairing the underlying cause of this OBDII code may require professional assistance due to the complexity of the air conditioning system.

9. Will resetting the OBDII code B2651 Electric Compressor Inverter Overheat resolve the issue?

Resetting the code without addressing the root cause of the problem may temporarily clear the warning light, but the issue is likely to reoccur if the underlying cause, such as a faulty electric compressor inverter, is not repaired.

10. How much does it typically cost to repair OBDII code B2651 Electric Compressor Inverter Overheat?

The cost of repair can vary depending on the specific cause of the issue, the labor rates in your area, and the parts needed for the repair. It is advisable to consult a professional mechanic for an accurate cost estimate.

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