AutoCodes – Toyota – P0798 2015 Toyota RAV4

P0798 2015 Toyota RAV4 Code - Pressure Control Solenoid 'C' Electrical

Quick Answer

Changing from 1st to 6th is performed by the Engine Control Module (ECM) turning shift solenoid valves SL1, SL2, SL3, SL4, and SL on and off. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid 'C' valve (Shift Solenoid Valve SL3). 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: P0798 2015 Toyota RAV4 indicates Pressure Control Solenoid 'C' Electrical.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid 'C' valve (Shift Solenoid Valve SL3).
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 357

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 Sep 12, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0798 2015 Toyota RAV4 Description

Changing from 1st to 6th is performed by the Engine Control Module (ECM) turning shift solenoid valves SL1, SL2, SL3, SL4, and SL on and off. If an open or short circuit occurs in any of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be operated.
The ECM commands gear shifts by turning the shift solenoid valves on and off. According to the input shaft speed, intermediate (counter) shaft speed, and output shaft speed, the ECM detects the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear). When the gear commanded by the ECM and the actual gear are not the same, the ECM illuminates the MIL and stores the Diagnostic Trouble Code (DTC).

OBDII Code P0798 2015 Toyota RAV4 - Pressure Control Solenoid 'C' Electrical - AutoCodes.com — P0798 2015 Toyota RAV4 Code - Pressure Control Solenoid 'C' Electrical

What does this mean?

What are the Possible Causes of the DTC P0798 2015 Toyota RAV4?

Low transmission fluid level
Dirty transmission fluid
Faulty Pressure Control Solenoid 'C' valve (Shift Solenoid Valve SL3)
Pressure Control Solenoid 'C' valve harness is open or shorted
Pressure Control Solenoid 'C' valve circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0798 2015 Toyota RAV4?

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 does this mean?

Code Tech Notes

When a transmission solenoid malfunction, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is dirty, it's recommended to change the transmission fluid and if possible, remove the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure, and that the transmission will need to be rebuilt or replaced.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0798 2015 Toyota RAV4 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 P0798 2015 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P0798 in a 2015 Toyota RAV4?

The common symptoms include harsh shifting, transmission slippage, decreased fuel efficiency, and an illuminated Check Engine Light.

2. What does OBDII code P0798 indicate in a 2015 Toyota RAV4?

P0798 indicates a problem with the Pressure Control Solenoid 'C' electrical circuit in the transmission.

3. What are the possible causes of OBDII code P0798 in a 2015 Toyota RAV4?

Possible causes include a faulty pressure control solenoid 'C', wiring issues, a poor electrical connection, or a malfunctioning transmission control module.

4. How serious is OBDII code P0798 in a 2015 Toyota RAV4?

While the vehicle may still be operable with this code, it can lead to transmission issues if left unresolved. It is recommended to address the problem promptly to prevent further damage.

5. Can I continue driving my 2015 Toyota RAV4 with OBDII code P0798?

It is not advisable to continue driving the vehicle with this code present, as it can lead to potential transmission problems. It is best to have the issue diagnosed and repaired as soon as possible.

6. How can I diagnose OBDII code P0798 in my 2015 Toyota RAV4?

Diagnosis typically involves using a scan tool to check for the code, inspecting the pressure control solenoid 'C' and its wiring, and conducting a thorough transmission system analysis.

7. How is OBDII code P0798 in a 2015 Toyota RAV4 typically repaired?

Repair usually involves replacing the faulty pressure control solenoid 'C', addressing any wiring issues, ensuring proper electrical connections, and clearing the trouble code from the system.

8. Can a DIY enthusiast fix OBDII code P0798 in a 2015 Toyota RAV4?

While some experienced DIYers may attempt the repair, dealing with transmission components can be complex. It is recommended to consult a professional mechanic for proper diagnosis and repair.

9. Will resetting the Check Engine Light resolve OBDII code P0798 in my 2015 Toyota RAV4?

Simply resetting the Check Engine Light may temporarily remove the warning, but the underlying issue causing the code will persist. It is essential to address the root cause of the problem.

10. How can I prevent OBDII code P0798 in my 2015 Toyota RAV4?

Regular maintenance, such as checking and replacing transmission fluid as recommended, can help prevent issues like P0798. Additionally, addressing any transmission-related symptoms promptly can prevent further damage.