AutoCodes – Infiniti – P0770 Infiniti

P0770 Infiniti Code - Shift Solenoid Valve 'E' Malfunction

Quick Answer

Shift solenoid valve 'E' 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 shift solenoid 'E' 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: P0770 Infiniti indicates Shift Solenoid Valve 'E' Malfunction.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'E' 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 4,221

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
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Code P0770 Infiniti Description

OBDII Code P0770 Infiniti - Shift Solenoid Valve 'E' Malfunction - AutoCodes.com — P0770 Infiniti Code - Shift Solenoid Valve 'E' Malfunction

What does this mean?

What are the Possible Causes of the DTC P0770 Infiniti?

Low transmission fluid level
Dirty transmission fluid
Faulty shift solenoid 'E' valve
Shift solenoid 'E' valve harness is open or shorted
Shift solenoid 'E' valve circuit poor electrical connection

How to Fix the DTC P0770 Infiniti?

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 P0770 Infiniti 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 P0770 Infiniti Code

1. What does the OBDII code P0770 mean on an Infiniti?

P0770 indicates a malfunction in the Shift Solenoid Valve 'E,' which is responsible for controlling gear shifting in the automatic transmission.

2. What are the symptoms of code P0770 on an Infiniti?

Common symptoms include harsh or delayed shifting, transmission slipping, reduced fuel efficiency, and the Check Engine Light illuminating.

3. What causes the P0770 code on an Infiniti?

The most common causes are a faulty shift solenoid valve, low or dirty transmission fluid, a damaged transmission valve body, or issues with the wiring or connectors.

4. Can I drive my Infiniti with a P0770 code?

Driving with a P0770 code is not recommended, as it can lead to further transmission damage and poor vehicle performance.

5. How do I fix the P0770 code on an Infiniti?

Repairs may include replacing the shift solenoid valve, flushing and refilling the transmission fluid, repairing damaged wiring, or replacing the transmission valve body.

6. How much does it cost to fix code P0770 on an Infiniti?

Repair costs vary but typically range from $200 to $500 for solenoid replacement. More extensive repairs, like valve body replacement, can cost upwards of $1,000.

7. Will clearing the P0770 code fix the problem?

Clearing the code will temporarily turn off the Check Engine Light, but the underlying issue must be resolved to prevent the code from returning.

8. Can low transmission fluid cause a P0770 code?

Yes, low or contaminated transmission fluid can cause improper solenoid operation, leading to a P0770 code.

9. How do I diagnose the P0770 code on my Infiniti?

Diagnosis involves scanning for codes, inspecting the solenoid for electrical faults, checking transmission fluid condition, and testing the wiring and connectors.

10. Is a transmission rebuild required to fix P0770 on an Infiniti?

Not always. Many cases can be resolved by replacing the solenoid or addressing fluid and wiring issues without a full rebuild.