AutoCodes – Infiniti – P1774 2004 Infiniti G35

P1774 2004 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 2004 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.

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Code Popularity 3,781

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
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Code P1774 2004 Infiniti G35 Description

OBDII Code P1774 2004 Infiniti G35 - Low Coast Brake Solenoid Valve Function - AutoCodes.com — P1774 2004 Infiniti G35 Code - Low Coast Brake Solenoid Valve Function

What does this mean?

What are the Possible Causes of the DTC P1774 2004 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 2004 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 2004 Infiniti G35 with 5-Speed A/T RE5R05A Transmission:
2004 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 2004 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 2004 Infiniti G35 code?

Need more information on how to fix the P1774 2004 Infiniti G35 code? Get Access to Factory Service Manuals

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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 P1774 2004 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1774 in a 2004 Infiniti G35?

The common symptoms of OBDII code P1774 in a 2004 Infiniti G35 include harsh shifting, transmission slipping, and decreased fuel efficiency.

2. What does the Low Coast Brake Solenoid Valve do in a 2004 Infiniti G35?

The Low Coast Brake Solenoid Valve in a 2004 Infiniti G35 is responsible for controlling the transmission fluid pressure during gear changes to ensure smooth shifting.

3. What are the possible causes of OBDII code P1774 in a 2004 Infiniti G35?

Possible causes of OBDII code P1774 in a 2004 Infiniti G35 include a faulty low coast brake solenoid valve, damaged wiring or connectors, low transmission fluid, or internal transmission issues.

4. How can I diagnose the Low Coast Brake Solenoid Valve issue in my 2004 Infiniti G35?

Diagnosing the Low Coast Brake Solenoid Valve issue in a 2004 Infiniti G35 involves checking the transmission fluid level, inspecting the wiring and connectors for damage, and performing a scan with an OBDII scanner to retrieve the error code.

5. Can I continue to drive my 2004 Infiniti G35 with OBDII code P1774?

It is not recommended to continue driving your 2004 Infiniti G35 with OBDII code P1774 as it can lead to further transmission damage and potential safety hazards.

6. How much does it typically cost to repair OBDII code P1774 in a 2004 Infiniti G35?

The cost to repair OBDII code P1774 in a 2004 Infiniti G35 can vary depending on the exact cause of the issue, but it typically ranges from $200 to $600 including parts and labor.

7. Can I repair OBDII code P1774 in my 2004 Infiniti G35 myself?

While some DIY enthusiasts may attempt to repair OBDII code P1774 in a 2004 Infiniti G35, it is recommended to consult a professional mechanic due to the complexity of transmission system repairs.

8. Will resetting the OBDII code P1774 in my 2004 Infiniti G35 fix the issue?

Simply resetting the OBDII code P1774 in a 2004 Infiniti G35 will not fix the underlying problem with the Low Coast Brake Solenoid Valve. It is important to diagnose and repair the root cause of the issue.

9. How long does it take to repair OBDII code P1774 in a 2004 Infiniti G35?

The repair time for OBDII code P1774 in a 2004 Infiniti G35 can vary depending on the extent of the issue, but it typically takes a few hours to a full day for a professional mechanic to diagnose and fix the problem.

10. Is OBDII code P1774 a common issue in 2004 Infiniti G35 vehicles?

While OBDII code P1774 related to the Low Coast Brake Solenoid Valve function is not extremely common in 2004 Infiniti G35 vehicles, it can still occur due to various factors affecting the transmission system.