P2797 Buick Code - Auxiliary Transmission Fluid Pump Performance
Quick Answer
The power inverter module, often referred to as the drive motor generator power inverter module contains three motor control modules and the hybrid powertrain control module. Common causes include Faulty Auxiliary Transmission Fluid Pump, Auxiliary Transmission Fluid Pump harness is open or shorted, Auxiliary Transmission Fluid Pump 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
- P2797 Buick indicates Auxiliary Transmission Fluid Pump Performance.
- Common causes
- Common causes include Faulty Auxiliary Transmission Fluid Pump, Auxiliary Transmission Fluid Pump harness is open or shorted, Auxiliary Transmission Fluid Pump 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 P2797 Buick Description
What are the Possible Causes of the DTC P2797 Buick?
- Faulty Auxiliary Transmission Fluid Pump
- Auxiliary Transmission Fluid Pump harness is open or shorted
- Auxiliary Transmission Fluid Pump circuit poor electrical connection
How to Fix the DTC P2797 Buick?
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 P2797 Buick 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 P2797 Buick Code
1. What does the OBDII code P2797 mean on a Buick?
P2797 indicates an issue with the Auxiliary Transmission Fluid Pump Performance, suggesting the auxiliary pump isn't operating as expected.
2. What are the common symptoms of code P2797 on a Buick?
Symptoms may include transmission overheating, poor shifting performance, a decrease in fuel efficiency, and the Check Engine Light illuminating.
3. What causes the P2797 code to appear in a Buick?
Common causes include a faulty auxiliary transmission fluid pump, electrical issues like damaged wiring or connectors, low transmission fluid levels, or a malfunctioning transmission control module (TCM).
4. Can I drive my Buick with a P2797 code?
Driving with this code is not recommended, as it may lead to further transmission damage due to inadequate fluid pressure or overheating.
5. How can I diagnose the P2797 code on my Buick?
Start by checking the transmission fluid level and condition. Inspect the wiring and connectors for the auxiliary pump. Use a scan tool to monitor auxiliary pump operation and check for related codes.
6. How is the P2797 code fixed on a Buick?
Common fixes include replacing the faulty auxiliary transmission fluid pump, repairing damaged wiring or connectors, topping off or replacing transmission fluid, and reprogramming or replacing the TCM if necessary.
7. What tools are needed to troubleshoot the P2797 code?
You’ll need a scan tool (OBDII scanner), a multimeter for checking electrical connections, and possibly a transmission pressure gauge.
8. How much does it cost to fix the P2797 code on a Buick?
Repair costs can vary, but replacing the auxiliary transmission fluid pump alone may cost between $300-$700, including parts and labor, depending on the Buick model and location.
9. Can low transmission fluid cause the P2797 code on a Buick?
Yes, low or degraded transmission fluid can lead to inadequate pump performance and trigger the P2797 code.
10. Does the P2797 code require immediate attention?
Yes, addressing the issue promptly is important to avoid further transmission damage and ensure safe vehicle operation.
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