AutoCodes – Toyota – P0746 2018 Toyota RAV4

P0746 2018 Toyota RAV4 Code - Pressure Control Solenoid 'A' Performance

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 'A' valve (Shift Solenoid Valve SL1). 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: P0746 2018 Toyota RAV4 indicates Pressure Control Solenoid 'A' Performance.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid 'A' valve (Shift Solenoid Valve SL1).
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 999

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 11, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0746 2018 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 P0746 2018 Toyota RAV4 - Pressure Control Solenoid 'A' Performance - AutoCodes.com — P0746 2018 Toyota RAV4 Code - Pressure Control Solenoid 'A' Performance

What does this mean?

What are the Possible Causes of the DTC P0746 2018 Toyota RAV4?

Low transmission fluid level
Dirty transmission fluid
Faulty Pressure Control Solenoid 'A' valve (Shift Solenoid Valve SL1)
Pressure Control Solenoid 'A' valve harness is open or shorted
Pressure Control Solenoid 'A' valve circuit poor electrical connection
Transmission valve body assembly is blocked
Faulty Automatic transaxle assembly

How to Fix the DTC P0746 2018 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 P0746 2018 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 P0746 2018 Toyota RAV4 Code

1. What does the OBDII code P0746 mean on a 2018 Toyota RAV4?

P0746 indicates an issue with the Pressure Control Solenoid 'A,' which is responsible for regulating hydraulic pressure in the transmission. It suggests a performance problem or failure.

2. What are the common symptoms of code P0746 in a 2018 Toyota RAV4?

Symptoms may include harsh shifting, slipping gears, transmission overheating, poor acceleration, or the vehicle entering limp mode.

3. What causes code P0746 in a 2018 Toyota RAV4?

Common causes include a faulty pressure control solenoid, low or dirty transmission fluid, clogged transmission fluid passages, or wiring and connector issues.

4. Can I drive my 2018 Toyota RAV4 with the P0746 code?

Driving with this code is not recommended, as it can lead to further damage to the transmission and reduced driving performance.

5. How can I fix the P0746 code on my 2018 Toyota RAV4?

Repairs may involve replacing the pressure control solenoid, changing or flushing the transmission fluid, cleaning fluid passages, or repairing damaged wiring and connectors.

6. How do I diagnose the P0746 code in a 2018 Toyota RAV4?

Diagnosis includes scanning for additional codes, inspecting the transmission fluid condition, testing the pressure control solenoid, and checking the wiring harness for damage.

7. What is the cost to repair the P0746 code on a 2018 Toyota RAV4?

Repair costs can range from $150 to $500+, depending on whether the solenoid needs replacement or if other transmission repairs are required.

8. Can dirty transmission fluid trigger the P0746 code in a 2018 Toyota RAV4?

Yes, dirty or contaminated transmission fluid can restrict solenoid operation and lead to this code.

9. Will resetting the check engine light fix the P0746 code on a 2018 Toyota RAV4?

Resetting the light without addressing the underlying issue will not fix the problem, and the code is likely to return.

10. Is the P0746 code a common issue for the 2018 Toyota RAV4?

While not extremely common, this code can occur in vehicles with high mileage or poor transmission maintenance. Regular fluid changes can help prevent it.