AutoCodes – Isuzu – P0758 Isuzu

P0758 Isuzu Code - 2-3 Shift Solenoid Fault

Quick Answer

2-3 Shift solenoid valve is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 2-3 Shift 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: P0758 Isuzu indicates 2-3 Shift Solenoid Fault.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 2-3 Shift 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 9,411

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P0758 Isuzu Description

OBDII Code P0758 Isuzu - 2-3 Shift Solenoid Fault - AutoCodes.com — P0758 Isuzu Code - 2-3 Shift Solenoid Fault

What does this mean?

What are the Possible Causes of the DTC P0758 Isuzu?

Low transmission fluid level
Dirty transmission fluid
Faulty 2-3 Shift Solenoid Valve
2-3 Shift Solenoid Valve harness or connectors
2-3 Shift Solenoid Valve circuit is open or shorted

How to Fix the DTC P0758 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 P0758 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 P0758 Isuzu Code

1. What does the OBDII code P0758 mean on an Isuzu?

P0758 indicates a fault with the 2-3 shift solenoid circuit, which is responsible for controlling gear shifts between second and third gears in the transmission.

2. What are the symptoms of code P0758 in an Isuzu?

Common symptoms include difficulty shifting between gears, the transmission getting stuck in one gear (limp mode), harsh or delayed shifting, and the Check Engine Light illuminating.

3. What causes the P0758 code in an Isuzu?

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

4. Can low transmission fluid cause the P0758 code?

Yes, low or dirty transmission fluid can lead to improper solenoid operation, causing the P0758 code to be triggered.

5. How do I diagnose a P0758 code in an Isuzu?

Start by checking the transmission fluid level and condition. Then inspect the wiring and connectors for damage or corrosion. Finally, test the 2-3 shift solenoid for proper operation using a multimeter or scan tool.

6. Is it safe to drive an Isuzu with a P0758 code?

Driving with a P0758 code is not recommended, as it can lead to poor shifting performance, potential transmission damage, and unsafe driving conditions.

7. How do I fix the P0758 code on my Isuzu?

Repairs may include replacing the 2-3 shift solenoid, repairing or replacing damaged wiring or connectors, flushing and refilling the transmission fluid, or addressing internal transmission issues.

8. How much does it cost to repair code P0758 on an Isuzu?

The cost varies depending on the issue. Replacing a shift solenoid typically costs $150â€“$400, while wiring repairs or transmission fluid service may cost less. Internal transmission repairs can be significantly more expensive.

9. Can a faulty shift solenoid cause permanent transmission damage?

If left unaddressed, a faulty shift solenoid can lead to improper shifting and excessive wear on the transmission, potentially causing long-term damage.

10. Will clearing the P0758 code fix the problem on my Isuzu?

Clearing the code without addressing the underlying issue will only temporarily remove the warning. The code will likely return if the root cause is not resolved.