Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there is a problem with a pump in the car that helps move the transmission fluid. It's like a helper that isn't doing its job, so the car might not work right.
The P2797 code indicates that the electric or auxiliary transmission fluid pump 'A' is not performing as expected or is stuck in the 'off' position.
The electric or auxiliary transmission fluid pump is responsible for maintaining the flow of transmission fluid when the engine is not running or when additional pressure is needed. If this pump fails to operate correctly, it can lead to transmission performance issues.
• Transmission overheating
• Poor transmission performance
• Illuminated check engine light
• Faulty electric/auxiliary transmission fluid pump
• Wiring issues such as open or short circuits
• Faulty transmission control module (TCM)
Transmission Fluid: A liquid used to lubricate and cool the components of a vehicle's transmission.
Transmission Control Module (TCM): An electronic component that controls transmission functions.
• Check for any additional trouble codes.
• Inspect the wiring and connectors for damage.
• Test the electric/auxiliary transmission fluid pump for proper operation.
• Replace the faulty transmission fluid pump.
• Repair or replace damaged wiring and connectors.
• Reprogram or replace the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$300 - $800
Moderate
• Ford Fusion
• Chevrolet Malibu
• Toyota Prius
• Regular transmission fluid checks and changes
• Routine inspection of transmission components
• Timely repair of any transmission-related issues
Transmission Performance Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult with a professional mechanic for a thorough diagnosis.
Check with your vehicle manufacturer for warranty coverage on transmission components.
This code has been associated with vehicles using electric pumps to supplement or replace mechanical pumps for transmission fluid circulation.
High – This issue can lead to severe transmission damage if not addressed promptly.
Operating a vehicle with a malfunctioning transmission can be dangerous. Ensure repairs are conducted by a qualified professional.
• Vehicle at operating temperature
• Engine running and in gear
The electric/auxiliary transmission fluid pump is typically located near the transmission assembly.
Q: Can I drive with a P2797 code?
A: It's not recommended to drive with this code active, as it can lead to further transmission damage.
Q: How do I reset the check engine light after fixing the issue?
A: You can reset the light by using an OBD-II scanner or by disconnecting the battery for a few minutes. However, ensure the issue is resolved first.
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