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P1774 2005 Infiniti G35 Code - Low Coast Brake Solenoid Valve Function

Quick Answer

The P1774 code in a 2005 Infiniti G35 indicates a problem with the Low Coast Brake Solenoid Valve function. Common causes include Faulty low coast brake solenoid valve, Wiring issues or electrical connection problems, Low transmission fluid levels. 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 2005 Infiniti G35 indicates Low Coast Brake Solenoid Valve Function.
Common causes
Common causes include Faulty low coast brake solenoid valve, Wiring issues or electrical connection problems, Low transmission fluid levels.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P1774 2005 Infiniti G35 Description

The P1774 code in a 2005 Infiniti G35 indicates a problem with the Low Coast Brake Solenoid Valve function. This solenoid valve is a crucial component of the vehicle's transmission system, specifically in automatic transmissions. The solenoid valve controls the flow of transmission fluid to engage or disengage the low coast brake, which is responsible for slowing down the vehicle during coasting or deceleration.

OBDII Code P1774 2005 Infiniti G35 - Low Coast Brake Solenoid Valve Function
P1774 2005 Infiniti G35 Code - Low Coast Brake Solenoid Valve Function

Common Causes of P1774 2005 Infiniti G35

  1. Faulty low coast brake solenoid valve
  2. Wiring issues or electrical connection problems
  3. Low transmission fluid levels
  4. Contaminated transmission fluid
  5. Internal transmission damage

Symptoms of P1774 2005 Infiniti G35

  1. Harsh shifting between gears
  2. Delayed or erratic deceleration
  3. Difficulty slowing down the vehicle
  4. Transmission slipping
  5. Illumination of the Check Engine Light

How to Fix P1774 2005 Infiniti G35

  1. Diagnose the specific cause of the P1774 code using a professional OBD-II scanner.
  2. Inspect the low coast brake solenoid valve for any visible damage or signs of malfunction.
  3. Test the electrical connections and wiring associated with the solenoid valve.
  4. Check and refill transmission fluid levels if necessary.
  5. Replace the low coast brake solenoid valve if it is determined to be faulty.

Cost to Fix P1774 2005 Infiniti G35

The cost of repairing a P1774 code related to the Low Coast Brake Solenoid Valve function in a 2005 Infiniti G35 can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the cost of replacing a solenoid valve ranges from $150 to $400, including parts and labor. Additional costs may apply if there are other underlying transmission issues that need to be addressed. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's condition and location. Keep in mind that labor rates at auto repair shops can vary widely, so it's advisable to shop around for the best price.

What does this mean?

Tech Notes for P1774 2005 Infiniti G35

There is a Factory Service Bulletin for the 2005 Infiniti G35 with 5-Speed A/T RE5R05A Transmission:

2005 Infiniti G35 RE5R05A Transmission Factory Service Bulletin OBDII Code P1774

Need more information about the P1774 2005 Infiniti G35 code?

Need more information on how to fix the P1774 2005 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 2005 Infiniti G35 Code

1. What are the common symptoms of OBDII code P1774 in a 2005 Infiniti G35?

The common symptoms of code P1774 in a 2005 Infiniti G35 include harsh shifting, delayed shifting, and the transmission staying in one gear.

2. What is the main cause of OBDII code P1774 in a 2005 Infiniti G35?

The main cause of code P1774 in a 2005 Infiniti G35 is a malfunctioning Low Coast Brake Solenoid Valve, which is responsible for regulating the hydraulic pressure in the transmission.

3. How can I diagnose the Low Coast Brake Solenoid Valve issue in my 2005 Infiniti G35?

To diagnose the Low Coast Brake Solenoid Valve in a 2005 Infiniti G35, you can perform a thorough inspection of the transmission system, check for any visible damage or leaks, and use a scan tool to retrieve the trouble codes.

4. Can I continue driving my 2005 Infiniti G35 with OBDII code P1774?

It is not recommended to continue driving your 2005 Infiniti G35 with code P1774, as it can lead to further damage to the transmission system and potentially result in a breakdown.

5. How can I repair OBDII code P1774 in my 2005 Infiniti G35?

To repair code P1774 in a 2005 Infiniti G35, you may need to replace the Low Coast Brake Solenoid Valve, perform a transmission fluid flush and filter change, or seek assistance from a professional mechanic.

6. Are there any temporary fixes for OBDII code P1774 in my 2005 Infiniti G35?

There are no recommended temporary fixes for code P1774 in a 2005 Infiniti G35, as it is crucial to address the root cause of the issue to prevent further transmission problems.

7. How much does it cost to repair OBDII code P1774 in a 2005 Infiniti G35?

The cost of repairing code P1774 in a 2005 Infiniti G35 can vary depending on the extent of the damage, the parts needed for replacement, and the labor costs involved. It is advisable to get a quote from a trusted mechanic.

8. Can a DIY enthusiast fix OBDII code P1774 in a 2005 Infiniti G35?

While some DIY enthusiasts may have the skills to tackle the repair of code P1774 in a 2005 Infiniti G35, it is a complex issue that may require specialized tools and expertise, so it is recommended to seek professional help.

9. How long does it take to repair OBDII code P1774 in a 2005 Infiniti G35?

The time required to repair code P1774 in a 2005 Infiniti G35 can vary depending on the specific issue and the repair process involved. It is best to consult with a mechanic for an accurate estimate of the repair timeline.

10. What happens if OBDII code P1774 is left untreated in a 2005 Infiniti G35?

If left untreated, OBDII code P1774 in a 2005 Infiniti G35 can lead to further damage to the transmission system, resulting in more severe issues and potentially costly repairs down the line.

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