AutoCodes – Subaru – P0785 Subaru

P0785 Subaru Code - Shift/Timing Solenoid Malfunction

Quick Answer

The 3-2 Shift Solenoid (SS) valve assembly is a normally-closed, 3-port, on/off device that controls the 3-2 downshift. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shifting solenoid valve. 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: P0785 Subaru indicates Shift/Timing Solenoid Malfunction.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shifting solenoid valve.
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 6,830

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 May 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0785 Subaru Description

The 3-2 Shift Solenoid (SS) valve assembly is a normally-closed, 3-port, on/off device that controls the 3-2 downshift. The solenoid attaches to the control valve body within the transmission. The solenoid receives ignition voltage through circuit 239. The Powertrain Control Module (PCM) controls the solenoid by providing a ground path. During a 3-2 downshift, the 2-4 band applies as the 3-4 clutch releases. The PCM varies the timing between the 3-4 clutch release and the 2-4 band apply depending on the vehicle speed and the throttle position.
When the PCM detects a continuous open, short to ground or short to power in the 3-2 SS valve assembly circuit, then DTC P0785 sets.

OBDII Code P0785 Subaru - Shift/Timing Solenoid Malfunction - AutoCodes.com — P0785 Subaru Code - Shift/Timing Solenoid Malfunction

What does this mean?

What are the Possible Causes of the DTC P0785 Subaru?

Low transmission fluid level
Dirty transmission fluid
Faulty shifting solenoid valve
Shifting solenoid valve harness is open or shorted
Shifting solenoid valve circuit poor electrical connection

How to Fix the DTC P0785 Subaru?

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 P0785 Subaru 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 P0785 Subaru Code

1. What is OBDII code P0785 in a Subaru?

- OBDII code P0785 in a Subaru refers to a Shift/Timing Solenoid Malfunction in the transmission control system.

2. What are common symptoms of a P0785 code in a Subaru?

- Common symptoms of a P0785 code in a Subaru include harsh shifting, erratic shifting patterns, transmission slippage, and decreased fuel efficiency.

3. What are the possible causes of a P0785 code in a Subaru?

- The possible causes of a P0785 code in a Subaru include a faulty shift/timing solenoid, damaged wiring or connectors in the transmission circuit, low transmission fluid levels, or internal transmission issues.

4. How can I diagnose a Shift/Timing Solenoid Malfunction in my Subaru?

- Diagnosing a Shift/Timing Solenoid Malfunction in a Subaru involves conducting a thorough inspection of the transmission system, checking for damaged wiring, testing the solenoid for resistance, and using a scan tool to retrieve the trouble codes.

5. Can I drive my Subaru with a P0785 code?

- It is not recommended to drive your Subaru with a P0785 code as it can lead to further damage to the transmission system and potentially unsafe driving conditions.

6. How can I repair a P0785 code in my Subaru?

- Repairing a P0785 code in a Subaru may involve replacing the shift/timing solenoid, repairing damaged wiring or connectors, ensuring proper transmission fluid levels, and clearing the trouble codes with a scan tool.

7. Is it possible to reset a P0785 code in a Subaru without fixing the issue?

- While it is possible to clear the trouble codes temporarily, it is not advisable to reset a P0785 code without addressing the underlying issue, as it may lead to recurring problems and potential transmission damage.

8. Can a DIY enthusiast fix a P0785 code in a Subaru?

- DIY enthusiasts with experience in automotive repair may attempt to fix a P0785 code in a Subaru by following repair guides and utilizing the necessary tools, but it is recommended to seek professional help for complex transmission issues.

9. How much does it cost to repair a P0785 code in a Subaru?

- The cost of repairing a P0785 code in a Subaru can vary depending on the extent of the damage, parts needed, and labor costs, but it typically ranges from $200 to $600 at a repair shop.

10. How can I prevent a P0785 code from recurring in my Subaru?

- To prevent a P0785 code from recurring in your Subaru, it is essential to perform regular transmission maintenance, check fluid levels, address any warning signs promptly, and drive your vehicle responsibly.