P2798 Toyota Code - Auxiliary Transmission Fluid Pump Control Circuit Low
Quick Answer
The Hybrid Vehicle Control ECU monitors the operation of the Auxiliary Transmission Fluid Pump. Common causes include Faulty Oil Pump Motor Controller, Oil Pump Motor Controller harness is open or shorted, Oil Pump Motor Controller 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
- P2798 Toyota indicates Auxiliary Transmission Fluid Pump Control Circuit Low.
- Common causes
- Common causes include Faulty Oil Pump Motor Controller, Oil Pump Motor Controller harness is open or shorted, Oil Pump Motor Controller 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 P2798 Toyota Description
What are the Possible Causes of the DTC P2798 Toyota?
- Faulty Oil Pump Motor Controller
- Oil Pump Motor Controller harness is open or shorted
- Oil Pump Motor Controller circuit poor electrical connection
- Faulty Hybrid Vehicle Control ECU
How to Fix the DTC P2798 Toyota?
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 P2798 Toyota 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.
Need more information about the P2798 Toyota code?
Need more information on how to fix the P2798 Toyota code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2798 Toyota code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2798 Toyota Code
1. What are the common symptoms of OBDII code P2798 in a Toyota related to the Auxiliary Transmission Fluid Pump Control Circuit Low?
Symptoms may include issues with shifting gears, transmission slipping, reduced fuel efficiency, and an illuminated check engine light.
2. What are the potential causes of the Auxiliary Transmission Fluid Pump Control Circuit Low error code P2798 in a Toyota?
Possible causes include a faulty auxiliary transmission fluid pump, damaged wiring or connectors in the control circuit, low transmission fluid levels, or a malfunctioning transmission control module.
3. How can I diagnose the cause of OBDII code P2798 in my Toyota?
Diagnosis typically involves using a professional OBDII scanner to retrieve the fault codes, inspecting the auxiliary transmission fluid pump and its connections, checking transmission fluid levels, and testing the control circuit for continuity and proper voltage.
4. Can I continue driving my Toyota with the P2798 code present?
It is not recommended to drive your vehicle with the P2798 code, as it can lead to further damage to the transmission system. It is advisable to address the issue promptly to avoid more significant repairs.
5. How can I repair the Auxiliary Transmission Fluid Pump Control Circuit Low code in my Toyota?
Repair options may include replacing the auxiliary transmission fluid pump, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the fault codes using a diagnostic tool.
6. Will resetting the OBDII code P2798 in my Toyota make the issue go away permanently?
Simply resetting the code may temporarily clear the check engine light, but it will not fix the underlying issue causing the code. It is crucial to diagnose and repair the root cause to prevent the code from reappearing.
7. How much does it typically cost to repair the P2798 code in a Toyota?
The cost of repairs can vary depending on the exact cause of the code, the extent of the repairs needed, and labor rates in your area. It is recommended to obtain quotes from reputable mechanics or dealerships.
8. Is the OBDII code P2798 specific to Toyota vehicles only?
While OBDII code P2798 is associated with Toyota vehicles regarding the Auxiliary Transmission Fluid Pump Control Circuit Low, similar codes and issues may occur in other vehicle makes and models with auxiliary transmission fluid pumps.
9. Can a DIY enthusiast fix the P2798 code issue in a Toyota, or is professional help necessary?
Depending on your skill level and access to tools, some DIY enthusiasts may be able to address simple causes of the P2798 code, such as checking and topping up transmission fluid. However, more complex repairs may require professional assistance.
10. How can I prevent the recurrence of the OBDII code P2798 in my Toyota in the future?
Regular maintenance of your vehicle, including checking transmission fluid levels, inspecting wiring and connectors, and addressing issues promptly, can help prevent the reoccurrence of the P2798 code in your Toyota.
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