Fault Code Lookup › Powertrain codes › P2797
P2797 Powertrain · generic range, no listed definition
P2797 fault code: what 8 owners reported
P2797 sits in the generic powertrain range (engine, transmission, fuel and emissions), but its SAE definition is not in CarHooq's list, so this page shows only what owners reported. What it meant in practice is below, from 8 complaints owners filed with NHTSA. Updated November 9, 2026.
Owners also write it as P279700 (the last two characters are the sub-code).
- 8owner reports
- 4car models
- 0mention a crash
- 0mention a fire
- 2013–2023model years
Which cars get code P2797?
Every model whose owners mentioned P2797 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.
Where does P2797 show up?
By brand
- Chevrolet4
- Chrysler2
- Audi1
- Jeep1
Component the owner filed it under
Is there a recall for P2797?
The others concern the component owners file this code under (Power Train) on the same cars; they may or may not relate to the code. Recall repairs are free; check your VIN at nhtsa.gov/recalls.
Power Train: Automatic Transmission Chrysler (FCA US LLC) is recalling certain 2019 Jeep Cherokee vehicles and 2018 Chrysler Pacifica non-hybrid vehicles. A component in the transmission may not have been welded properly, possibly causing the transmission to not transmit engine power to the wheels.
2018 Chrysler Pacifica. Full risk and remedy on each car's report.
Power Train: Axle Assembly: Axle Shaft Chrysler (FCA US LLC) is recalling certain 2018 Chrysler Pacifica vehicles. The front axle halfshafts may have been incorrectly assembled, preventing the shaft from being properly secured to the constant-velocity (CV) joint.
2018 Chrysler Pacifica. Full risk and remedy on each car's report.
What happened when owners saw P2797?
8 of the 8 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
What component or system failed or malfunctioned, and is it available for inspection upon request? The Transmission Fluid Pump failed, and is needing to be replaced. The car only had 200 miles on it and was bought 5 days prior before the issue began. How was your safety or the safety of others put at risk? The car immediatley reduced my speed to 30mph. I was driving on an expressway, and caused me to slow traffic. Has the problem been reproduced or confirmed by a dealer or independent service center? Yea, I have the error code given to me by OnStar: P2797 Auxilliary Transmission Fluid Pump error Has the vehicle or component been inspected by the manufacturer, police, insurance…
The van fail GA state emissions with code p2797. I have to the end of July to get the tag. I went to the state for a repair waiver control # s1174706. I told them this code is under a tsb it fell on deaf ears. I. Took the van back to the dealership for a third time a different dealership they say they did the procedure for the tsb code p2797 butt didn't fix the code to pass GA emission. Tsb are good for the automotive industry but if the tsb and engineers procedures didn't fix the p2797 code than the tsb need to be moved to a recall program. The dealership was good at explaining that the van needs a new transmission that cost the customer 13,000.00 to replace and 3000 for new struts. The van…
…THE FOLLOWING DIAGNOSTIC CODES WERE PROVIDED BY THE DEALERSHIP: P0AB900,P060A00,P279700,U040200. ACCORDING TO AUDI, MY CAR NOW NEEDS A WHOLE NEW TRANSMISSION AND HAS 'BURNED' TRANSMISSION FLUID DUE TO AN 'INTERNAL PARTS FAILURE' AT 70,290 MILES.THE TRANSMISSION REPLACEMENT AND LABOR IS APPROX $27K. I RECENTLY LEARNED THE TRANSMISSION MECHATRONICS WAS REPLACED BY ANOTHER AUDI DEALERSHIP IN AUG 16' AND THE MILEAGE WAS APPROXIMATELY 22KMILES. I PURCHASED THE VEHICLE IN JAN 17', WITH APPROX. 26KMILES. MORE DETAIL IN PDF. *TR
My transmission oil cooler failed causing issues with the coolant system P2797-00 Auxiliary Transmission Fluid Pump & U0155-00 lost communication with cluster/cabin compartment node B0020-13 Left side seat Airbag deployment squib 1- circuit open Body Control Module front left turn lamp control-Circuit short to Battery B163A-15 & U0155-00 lost communication with cluster/cabin compartment node Ground wire from engine to battery causing misfiring issues with start-stop relay & starter relay that both had to be replaced along with both Batteries.
Frightening SAFETY Problem: Sudden Power loss on Los Angeles freeway. About 6/21/2023 began repeated episodes where my Chevy 2023 Bolt EUV hesitated for a few seconds before responding when I pushed on the accelerator pedal. Full power and acceleration resumed right after the initial hesitation and were sustained until I had to stop the car. A dashboard warning light appeared. I called for an On-Demand Diagnostic evaluation, spoke by phone with Chevrolet support who assisted with the evaluation and emailed me the results (screenshot) indicating an issue with the HCP - Hybrid Control Processor Module and a Diagnostic Code P2797. The Diagnostic Information read: "The Electric Drive Unit is not…
…Processor failure — required 14 flash attempts to program; (3) $1,786.67 repair failed within 23 miles — CEL and BRAKE warning light appeared simultaneously; (4) Complete transmission removal required to replace auxiliary transmission fluid pump (DTC P2797-00); (5) Power Inverter Module replacement still pending. Vehicle also disabled itself completely while driving prior to March 2026, requiring 30 minutes rest before it could be driven. All failed components are part of the integrated hybrid drivetrain disturbed during the recall repair. Request investigation into whether Recall 73B repairs are being performed correctly at authorized FCA dealers and whether other owners are experiencing…
I, and many other owners of Chevy Bolts are having our speed suddenly reduced without warning. The vehicle immediately drops to a max speed of 30 mph and gives an error message "Propulsion Power is Reduced". One common cause seems to be defective transmission fluid pumps, although other electrical and mechanical components also seem to cause this problem. One common error code seems to be P2797, along with the "Propulsion Power is Reduced" message. This dangerous speed reduction is sometimes happening in dangerous situations, while driving in heavy traffic and at high speeds on highways. This is an incredibly dangerous defect and could easily cause car accidents, injuries or death. People…
Was driving along and received a “Propulsion Power Reduced” warning on dash and couldn’t go over 30mph while on a highway. Had to limp along on the shoulder. Pushed the OnStar button and they ran a diagnostic test which came back with P2797.
P2797: questions drivers ask
What does code P2797 mean?
P2797 sits in the generic powertrain range (engine, transmission, fuel and emissions), but its SAE definition is not in CarHooq's list, so CarHooq shows only what owners reported. 8 owners reported it to NHTSA, most often for the Chevrolet Bolt EUV (4), Chrysler Pacifica (2), Audi Q5 (1); their reports describe what happened.
Which cars get code P2797 most often?
In NHTSA owner complaints, P2797 is mentioned most for the Chevrolet Bolt EUV (4), Chrysler Pacifica (2), Audi Q5 (1), across 4 models and model years 2013 to 2023. Popular models collect more reports because more of them are on the road.
Is there a recall for code P2797?
No NHTSA recall text names P2797 directly. 2 recalls on the cars that report this code concern the same component owners name most (Power Train); they may or may not relate to the code. Check your VIN at nhtsa.gov/recalls.
What should I do if my car shows P2797?
Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.
How this page was made
CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of P2797 (including sub-code forms such as P279700). The code is in a generic range but its standard definition is not in CarHooq's list, so CarHooq shows only what owners reported. Nothing here is a diagnosis. More answers: the fault code FAQ. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 9, 2026. How CarHooq reports are made.
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