AutoCodes – Cadillac – P2797 Cadillac

P2797 Cadillac 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 Cadillac 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.

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Code Popularity 2,775

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 Apr 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2797 Cadillac Description

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. Two of the motor control modules operate their respective drive motor generator based upon power inverter module commands. The third motor control module controls the auxiliary transmission fluid pump motor. The hybrid powertrain control module and the motor control modules share the power inverter module ignition voltage circuit, battery voltage circuits and chassis earth.

OBDII Code P2797 Cadillac - Auxiliary Transmission Fluid Pump Performance - AutoCodes.com — P2797 Cadillac Code - Auxiliary Transmission Fluid Pump Performance

What does this mean?

What are the Possible Causes of the DTC P2797 Cadillac?

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 Cadillac?

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 Cadillac 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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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 Cadillac Code

1. What does the OBDII code P2797 mean on a Cadillac?

P2797 indicates an issue with the auxiliary transmission fluid pump's performance, suggesting it may not be operating as expected to maintain fluid pressure.

2. What are the common symptoms of a P2797 code on a Cadillac?

Symptoms include erratic shifting, delayed gear engagement, transmission overheating, and potential activation of the "Check Engine" light.

3. What causes the P2797 code to appear on a Cadillac?

Common causes include a faulty auxiliary transmission fluid pump, electrical issues like damaged wiring or connectors, or a failing transmission control module (TCM).

4. Can I drive my Cadillac with a P2797 code?

While the vehicle may still operate, driving with a P2797 code can cause further damage to the transmission. Itâ€™s best to address the issue promptly.

5. How is the P2797 code diagnosed on a Cadillac?

A mechanic will use a scan tool to confirm the code, inspect the auxiliary pump and related wiring, and test the transmission fluid pressure and electrical signals.

6. How do you fix a P2797 code on a Cadillac?

Repairs may involve replacing the auxiliary transmission fluid pump, repairing damaged wiring, or reprogramming or replacing the transmission control module.

7. What is the cost of repairing the P2797 code on a Cadillac?

Repair costs vary but may range from $300 to $1,200 depending on the specific issue, such as replacing the pump or addressing electrical faults.

8. Can low transmission fluid cause a P2797 code?

Yes, low or contaminated transmission fluid can affect pump performance and trigger the P2797 code.

9. Does resetting the P2797 code fix the problem on a Cadillac?

Resetting the code without addressing the root cause may temporarily clear the warning but wonâ€™t resolve the underlying issue.

10. How can I prevent a P2797 code on my Cadillac?

Regular maintenance, including checking transmission fluid levels and inspecting wiring and connectors, can help prevent issues with the auxiliary transmission fluid pump.