Engine-CodesChevrolet – P2797 Chevrolet

P2797 Chevrolet Code - Auxiliary Transmission Fluid Pump Performance

Quick Answer

The P2797 code for Chevrolet vehicles refers to an issue with the Auxiliary Transmission Fluid Pump Performance. Common causes include Faulty auxiliary transmission fluid pump, Electrical issues with the transmission control module, Blocked or restricted fluid lines. 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
P2797 Chevrolet indicates Auxiliary Transmission Fluid Pump Performance.
Common causes
Common causes include Faulty auxiliary transmission fluid pump, Electrical issues with the transmission control module, Blocked or restricted fluid lines.
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.
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P2797 Chevrolet Description

The P2797 code for Chevrolet vehicles refers to an issue with the Auxiliary Transmission Fluid Pump Performance. The auxiliary transmission fluid pump is responsible for maintaining proper fluid pressure within the transmission system, ensuring smooth gear shifts and overall performance. When this code is triggered, it indicates that the pump is not operating at the expected level of performance, which can lead to various issues with the transmission system.

OBDII Code P2797 Chevrolet - Auxiliary Transmission Fluid Pump Performance
P2797 Chevrolet Code - Auxiliary Transmission Fluid Pump Performance

Common Causes of P2797 Chevrolet

  1. Faulty auxiliary transmission fluid pump
  2. Electrical issues with the transmission control module
  3. Blocked or restricted fluid lines
  4. Wiring problems related to the pump
  5. Low transmission fluid levels

Symptoms of P2797 Chevrolet

  1. Rough or delayed shifting between gears
  2. Transmission slipping or jerking during acceleration
  3. Illumination of the check engine light
  4. Transmission overheating
  5. Reduced fuel efficiency

How to Fix P2797 Chevrolet

  1. Diagnose the exact cause of the issue by performing a comprehensive transmission system check
  2. Replace the faulty auxiliary transmission fluid pump if necessary
  3. Clear the error code from the vehicle's computer system
  4. Check and replace any damaged wiring or connectors related to the pump
  5. Perform a transmission fluid flush and refill to ensure proper fluid levels and system operation

Cost to Fix P2797 Chevrolet

The typical repair costs for addressing the P2797 code in a Chevrolet vehicle can range from $200 to $600, depending on the extent of the repairs needed. This estimate includes the cost of parts, such as a new auxiliary transmission fluid pump, transmission fluid, and any necessary wiring components. Labor costs can vary based on the location and the shop's hourly rates, with most auto repair shops charging between $80 and $150 per hour for labor. It's recommended to obtain a detailed quote from a trusted mechanic or dealership to get a more accurate estimate based on your specific vehicle and location.

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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 P2797 Chevrolet Code

1. What are the common symptoms of OBDII code P2797 in a Chevrolet related to Auxiliary Transmission Fluid Pump Performance?

- Common symptoms include harsh shifting, transmission slipping, and decreased fuel efficiency.

2. What are the possible causes of OBDII code P2797 in a Chevrolet related to Auxiliary Transmission Fluid Pump Performance?

- The code may be triggered by a faulty auxiliary transmission fluid pump, low transmission fluid levels, or electrical issues within the pump system.

3. How can I diagnose the issue causing OBDII code P2797 in my Chevrolet related to Auxiliary Transmission Fluid Pump Performance?

- Diagnose the issue by checking the transmission fluid level, inspecting the auxiliary pump for any visible damage, and performing a thorough electrical system check.

4. Can driving with OBDII code P2797 in a Chevrolet related to Auxiliary Transmission Fluid Pump Performance cause further damage?

- Continuing to drive with this code may lead to further damage to the transmission components, potentially resulting in more costly repairs.

5. What are some repair tips for addressing OBDII code P2797 in a Chevrolet related to Auxiliary Transmission Fluid Pump Performance?

- Repair tips include replacing the faulty auxiliary transmission fluid pump, ensuring proper fluid levels, and addressing any electrical issues in the pump system.

6. Is it safe to continue driving my Chevrolet with the OBDII code P2797 related to Auxiliary Transmission Fluid Pump Performance?

- It is not recommended to drive the vehicle with this code active, as it may lead to transmission issues and worsen the overall condition of the vehicle.

7. How much does it typically cost to repair OBDII code P2797 in a Chevrolet related to Auxiliary Transmission Fluid Pump Performance?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced, but it may range from a few hundred to over a thousand dollars.

8. Can I reset the OBDII code P2797 related to Auxiliary Transmission Fluid Pump Performance in my Chevrolet without fixing the underlying issue?

- While you can clear the code temporarily, it is important to address the root cause of the problem to prevent further damage to the vehicle's transmission system.

9. Are there any DIY repairs I can attempt for OBDII code P2797 in my Chevrolet related to Auxiliary Transmission Fluid Pump Performance?

- DIY repairs may include checking and topping up transmission fluid levels, but for more complex issues like a faulty pump, it is recommended to seek professional help.

10. How can regular maintenance help prevent OBDII code P2797 related to Auxiliary Transmission Fluid Pump Performance in my Chevrolet?

- Regular maintenance, including checking transmission fluid levels and addressing any warning signs promptly, can help prevent issues that lead to OBDII code P2797 from occurring.

1. What are the common symptoms of OBDII code P2797 in a Chevrolet related to the Auxiliary Transmission Fluid Pump Performance?

The common symptoms include issues with shifting gears, transmission slipping, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P2797 in a Chevrolet indicating a problem with the Auxiliary Transmission Fluid Pump?

Potential causes include a faulty auxiliary transmission fluid pump, damaged wiring or connectors in the pump circuit, low transmission fluid levels, or a malfunctioning transmission control module.

3. How can I diagnose the OBDII code P2797 in a Chevrolet related to the Auxiliary Transmission Fluid Pump Performance?

Diagnosis typically involves using a scan tool to read the code, checking the transmission fluid level and condition, inspecting the auxiliary pump and its connections, and testing the pump's performance using manufacturer-specific procedures.

4. Can low transmission fluid cause OBDII code P2797 to trigger in a Chevrolet?

Yes, low transmission fluid levels can lead to inadequate pressure from the auxiliary transmission fluid pump, triggering code P2797. It's essential to check and maintain proper fluid levels to prevent this issue.

5. What repair tips can help resolve OBDII code P2797 in a Chevrolet associated with the Auxiliary Transmission Fluid Pump Performance?

Repair tips may include replacing the faulty auxiliary pump, repairing damaged wiring or connectors, addressing low transmission fluid levels, ensuring proper fluid quality, and resetting the code after repairs are completed.

6. Is it safe to continue driving a Chevrolet with OBDII code P2797 indicating issues with the Auxiliary Transmission Fluid Pump Performance?

Continuing to drive with this code present can potentially cause further damage to the transmission system. It is recommended to address the issue promptly to prevent more severe problems and ensure safe vehicle operation.

7. Can a DIY enthusiast repair OBDII code P2797 in a Chevrolet by themselves?

While some experienced DIY enthusiasts may be able to address this code themselves, it is recommended to consult professional mechanics or technicians for accurate diagnosis and proper repair to avoid complications.

8. How much does it typically cost to repair OBDII code P2797 in a Chevrolet caused by the Auxiliary Transmission Fluid Pump Performance issue?

The repair cost can vary depending on the exact cause of the problem, the location of the faulty component, and labor rates. It is advisable to obtain quotes from reputable repair shops for an accurate estimate.

9. Will resetting the OBDII code P2797 in a Chevrolet make the issue go away permanently?

Simply resetting the code without addressing the underlying problem will not fix the issue permanently. It is crucial to diagnose the root cause and perform necessary repairs to prevent the code from reappearing.

10. Can regular maintenance help prevent OBDII code P2797 from occurring in a Chevrolet?

Yes, regular transmission fluid checks and changes, along with overall vehicle maintenance, can help prevent issues with the auxiliary transmission fluid pump that trigger code P2797. Following the manufacturer's maintenance schedule is essential for preventing such problems.

Discuss the causes and fixes for P2797 Chevrolet OBDII Code

  • I changed my transmission filter and replaced all the tranny fluids. Mainly because I've got 275000km and want the transmission to last a long time and I thought transmission fluid was getting hot on long trips. The transmission auxiliary pump is in the way to drop the pan so I remove it and tie it off to the side. Put everything back and I add Teflon paste to the bolts to prevent fluid from dripping from the bolts. But now I've got the code p2797. Everything worked good before and not so much now.

  • Let me check if I can find more information that can help you with your problem. What model and year is your vehicle?