AutoCodes – Isuzu – P0785 Isuzu

P0785 Isuzu Code - 3-2 Shift Solenoid Circuit Electrical

Quick Answer

The 3-2 Shift Solenoid valve assembly is a normally-closed, and the 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 Isuzu 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 4,678

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 Isuzu Description

The 3-2 Shift Solenoid valve assembly is a normally-closed, and the controls the 3-2 downshift. 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.

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

What does this mean?

What are the Possible Causes of the DTC P0785 Isuzu?

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 Isuzu?

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 Isuzu 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 Isuzu Code

1. What does the OBDII code P0785 Isuzu mean?

The code P0785 for Isuzu indicates an issue with the 3-2 Shift Solenoid Circuit Electrical.

2. What are the common symptoms of a P0785 Isuzu trouble code?

Common symptoms include harsh shifting between gears, delayed or erratic shifting, and the transmission getting stuck in a particular gear.

3. What are the possible causes of the P0785 Isuzu trouble code?

Potential causes include a faulty 3-2 shift solenoid, damaged wiring or connectors in the transmission circuit, low transmission fluid levels, or internal transmission issues.

4. How serious is a P0785 Isuzu fault code?

A P0785 code can lead to transmission performance issues and should be addressed promptly to prevent further damage to the transmission system.

5. How can I diagnose a P0785 Isuzu trouble code?

Diagnosis typically involves using a scan tool to check for the specific code, examining the transmission wiring and connectors for damage, and testing the 3-2 shift solenoid for proper operation.

6. Can I drive my vehicle with a P0785 Isuzu fault code?

It is not recommended to drive with a P0785 code as it can lead to transmission problems and potential safety hazards on the road.

7. How can I repair a P0785 Isuzu trouble code?

Repair options may include replacing the faulty 3-2 shift solenoid, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, and addressing any other underlying transmission issues.

8. Will resetting the trouble codes fix a P0785 Isuzu fault?

Simply resetting the codes may temporarily clear the warning light, but the underlying issue causing the P0785 code will persist until properly diagnosed and repaired.

9. How much does it cost to fix a P0785 Isuzu trouble code?

The cost of repairing a P0785 code can vary depending on the exact cause of the issue, parts needed for replacement, and labor costs at a repair shop. It is recommended to obtain quotes from local mechanics for an accurate estimate.

10. Can a DIY enthusiast fix a P0785 Isuzu fault at home?

While some skilled DIYers may be able to diagnose and replace the 3-2 shift solenoid themselves, it is generally recommended to seek professional help for transmission-related issues to ensure proper diagnosis and repair.