P2798 Lexus 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 Lexus 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 Lexus Description
What are the Possible Causes of the DTC P2798 Lexus?
- 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 Lexus?
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 Lexus 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 P2798 Lexus Code
1. What are the common symptoms of OBDII code P2798 in a Lexus related to the Auxiliary Transmission Fluid Pump Control Circuit?
The common symptoms include difficulty shifting gears, reduced fuel efficiency, and the illumination of the check engine light.
2. What are the possible causes of OBDII code P2798 in a Lexus?
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 issue related to OBDII code P2798 in my Lexus?
Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, conducting a visual inspection of the wiring and connectors, checking the transmission fluid level, and testing the auxiliary transmission fluid pump.
4. Can I continue driving my Lexus with OBDII code P2798?
It is not recommended to continue driving your Lexus with this code, as it can lead to further damage to the transmission system. It's best to address the issue promptly.
5. How can I repair OBDII code P2798 in my Lexus?
Repair options may include replacing the auxiliary transmission fluid pump, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, or reprogramming the transmission control module.
6. Will resetting the check engine light resolve OBDII code P2798 in my Lexus?
Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing the fault code to appear. It's important to diagnose and repair the problem to prevent further complications.
7. Is it possible to prevent OBDII code P2798 from occurring in my Lexus?
Regular maintenance of the transmission system, including checking and maintaining proper fluid levels, can help prevent issues that may trigger this fault code. Keeping an eye on transmission performance can also aid in early detection of problems.
8. Can a DIY enthusiast fix OBDII code P2798 in a Lexus?
While some minor repairs like checking and topping up transmission fluid can be done by DIY enthusiasts, diagnosing and repairing complex issues related to this fault code may require professional expertise and specialized tools.
9. How much does it typically cost to repair OBDII code P2798 in a Lexus?
The cost of repairs can vary depending on the specific cause of the fault code and the labor rates in your area. It's recommended to get a diagnostic assessment from a qualified mechanic to determine the exact cost.
10. How long does it take to fix OBDII code P2798 in a Lexus?
The repair time can vary based on the complexity of the issue and the availability of parts. Simple fixes like replacing a connector may take a short time, while more involved repairs like replacing the auxiliary transmission fluid pump can take longer.
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