AutoCodes – Infiniti – P1774 2006 Infiniti G35

P1774 2006 Infiniti G35 Code - Low Coast Brake Solenoid Valve Function

Quick Answer

Low Coast Brake 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 Sensor (VSS), and Accelerator Pedal Position (APP) Sensor (Throttle Position Sensor). Common causes include Faulty Low Coast Brake Solenoid Valve, Low Coast Brake Solenoid Valve harness is open or shorted, Low Coast Brake Solenoid Valve circuit poor electrical connection. 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: P1774 2006 Infiniti G35 indicates Low Coast Brake Solenoid Valve Function.
Common causes: Common causes include Faulty Low Coast Brake Solenoid Valve, Low Coast Brake Solenoid Valve harness is open or shorted, Low Coast Brake Solenoid Valve circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,165

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 Jun 30, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1774 2006 Infiniti G35 Description

OBDII Code P1774 2006 Infiniti G35 - Low Coast Brake Solenoid Valve Function - AutoCodes.com — P1774 2006 Infiniti G35 Code - Low Coast Brake Solenoid Valve Function

What does this mean?

What are the Possible Causes of the DTC P1774 2006 Infiniti G35?

Faulty Low Coast Brake Solenoid Valve
Low Coast Brake Solenoid Valve harness is open or shorted
Low Coast Brake Solenoid Valve circuit poor electrical connection
Faulty Transmission Valve Body

How to Fix the DTC P1774 2006 Infiniti G35?

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 does this mean?

Code Tech Notes

There is a Factory Service Bulletin for the 2006 Infiniti G35 with 5-Speed A/T RE5R05A Transmission:
2006 Infiniti G35 RE5R05A Transmission Factory Service Bulletin OBDII Code P1774

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1774 2006 Infiniti G35 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.

Need more information about the P1774 2006 Infiniti G35 code?

Need more information on how to fix the P1774 2006 Infiniti G35 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1774 2006 Infiniti G35 code diagnosed by a professional: Find a repair shop in your area

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 P1774 2006 Infiniti G35 Code

1. What are common symptoms of OBDII code P1774 in a 2006 Infiniti G35?

Common symptoms include harsh shifting, transmission slipping, and the vehicle going into "limp mode," where it may be stuck in one gear.

2. What does the Low Coast Brake Solenoid Valve do in a 2006 Infiniti G35?

The Low Coast Brake Solenoid Valve controls the application of hydraulic pressure to the low coast brake in the transmission, helping with shifting and performance.

3. What are possible causes of OBDII code P1774 in a 2006 Infiniti G35?

Possible causes include a faulty low coast brake solenoid valve, wiring issues, low transmission fluid, or a malfunctioning transmission control module.

4. Can I continue driving my 2006 Infiniti G35 with OBDII code P1774?

It is not recommended to continue driving with this code present, as it can lead to further transmission issues and potential safety hazards.

5. How can I diagnose the Low Coast Brake Solenoid Valve issue in my 2006 Infiniti G35?

Diagnosis typically involves a scan tool to retrieve the OBDII code, checking the transmission fluid level and condition, and inspecting the wiring and connections to the solenoid valve.

6. What are some repair options for fixing OBDII code P1774 in a 2006 Infiniti G35?

Repair options may include replacing the low coast brake solenoid valve, repairing any damaged wiring, ensuring proper transmission fluid levels, or reprogramming the transmission control module.

7. How much does it cost to repair OBDII code P1774 in a 2006 Infiniti G35?

The cost of repairs can vary depending on the exact cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Can a DIY enthusiast fix OBDII code P1774 in a 2006 Infiniti G35?

While some experienced DIY enthusiasts may attempt to diagnose and repair this issue, it is recommended to consult a professional mechanic or technician due to the complexity of transmission systems.

9. Will resetting the OBDII code P1774 in my 2006 Infiniti G35 make the problem go away?

Simply resetting the code without addressing the underlying issue will not fix the problem. It is important to diagnose and repair the root cause to prevent further transmission damage.

10. How often does the Low Coast Brake Solenoid Valve fail in a 2006 Infiniti G35?

The failure rate of the low coast brake solenoid valve can vary, but it is not uncommon for this component to fail over time, especially in older vehicles or those with high mileage.