AutoCodes – Saturn – P0785 Saturn

P0785 Saturn Code - 3-2 Shift Solenoid Circuit Electrical

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 Saturn indicates 3-2 Shift Solenoid Circuit Electrical.
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 3,113

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 Saturn 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 Saturn - 3-2 Shift Solenoid Circuit Electrical - AutoCodes.com — P0785 Saturn Code - 3-2 Shift Solenoid Circuit Electrical

What does this mean?

What are the Possible Causes of the DTC P0785 Saturn?

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 Saturn?

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 Saturn 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 Saturn Code

What does OBDII code P0785 mean for a Saturn vehicle?

P0785 indicates an electrical problem in the 3-2 shift solenoid circuit, which controls gear shifting in the transmission.

What are the common symptoms of code P0785 in a Saturn?

Symptoms may include rough or delayed shifting, transmission stuck in one gear, poor acceleration, or the check engine light being illuminated.

What causes the P0785 code to appear on a Saturn?

Common causes include a faulty 3-2 shift solenoid, damaged wiring or connectors, a malfunctioning transmission control module (TCM), or low transmission fluid.

Can I drive my Saturn with a P0785 code?

Driving with this code is not recommended as it can lead to further transmission damage or unsafe driving conditions due to erratic shifting.

How do I diagnose the P0785 code on a Saturn?

Diagnosis involves checking the transmission fluid level, inspecting wiring and connectors for damage, testing the 3-2 shift solenoid, and scanning the TCM for additional codes.

How much does it cost to repair the P0785 code on a Saturn?

Repair costs vary but may range from $150 to $400 for solenoid replacement, with additional costs if wiring or the TCM needs repair.

Can a low transmission fluid level cause the P0785 code?

Yes, low or contaminated transmission fluid can affect solenoid performance and trigger the P0785 code.

How do I fix the P0785 code on my Saturn?

Repairs might include replacing the 3-2 shift solenoid, repairing or replacing damaged wiring, or addressing issues with the TCM.

Will clearing the P0785 code fix the problem?

Clearing the code will turn off the check engine light temporarily, but the underlying issue must be repaired to prevent the code from returning.

How can I prevent the P0785 code in the future?

Regular maintenance, including checking and replacing transmission fluid, inspecting wiring, and addressing transmission issues promptly, can help prevent this code.