P1774 Infiniti 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 Infiniti 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.
Code P1774 Infiniti Description
What are the Possible Causes of the DTC P1774 Infiniti?
- 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 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.
Code Tech Notes
2003-2010 Infiniti RE5R05A Transmission Factory Service Bulletin OBDII Code P1774
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1774 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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Information for Specific Infiniti Models
- P1774 2003 Infiniti G35 — Low Coast Brake Solenoid Valve Function
- P1774 2004 Infiniti G35 — Low Coast Brake Solenoid Valve Function
- P1774 2005 Infiniti G35 — Low Coast Brake Solenoid Valve Function
- P1774 2006 Infiniti G35 — Low Coast Brake Solenoid Valve Function
Frequently Asked Questions about P1774 Infiniti Code
1. What are the common symptoms of OBDII code P1774 in an Infiniti related to the Low Coast Brake Solenoid Valve function?
- Common symptoms include harsh shifting, transmission slippage, poor acceleration, and the transmission remaining in a single gear.
2. What typically causes the OBDII code P1774 to trigger in an Infiniti?
- The code P1774 is usually triggered by a malfunction in the Low Coast Brake Solenoid Valve, which is responsible for controlling the transmission's shifting behavior.
3. How can I diagnose the issue causing OBDII code P1774 in my Infiniti related to the Low Coast Brake Solenoid Valve function?
- Diagnosing the issue requires a thorough inspection of the transmission system, checking for any wiring faults, solenoid valve malfunctions, or hydraulic issues.
4. Is it safe to continue driving my Infiniti with OBDII code P1774 related to the Low Coast Brake Solenoid Valve function?
- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the transmission system and potentially unsafe driving conditions.
5. Can I repair the Low Coast Brake Solenoid Valve issue causing OBDII code P1774 in my Infiniti myself?
- While some DIY enthusiasts may attempt the repair, it is recommended to seek professional help due to the complexity of the transmission system and the precise nature of the repair.
6. How much does it typically cost to repair the Low Coast Brake Solenoid Valve issue causing OBDII code P1774 in an Infiniti?
- Repair costs can vary depending on the extent of the damage and the labor rates of the repair shop, but it can range from a few hundred to over a thousand dollars.
7. Are there any preventive maintenance tips to avoid triggering OBDII code P1774 in an Infiniti related to the Low Coast Brake Solenoid Valve function?
- Regular transmission fluid checks and changes, as well as keeping up with scheduled maintenance, can help prevent issues that may lead to triggering this code.
8. Will resetting the OBDII code P1774 related to the Low Coast Brake Solenoid Valve function make it go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue with the Low Coast Brake Solenoid Valve is not addressed, the code is likely to reappear.
9. Can a faulty Low Coast Brake Solenoid Valve affecting OBDII code P1774 cause long-term damage to the transmission of an Infiniti?
- Yes, if left unresolved, a malfunctioning solenoid valve can lead to further damage to the transmission system, potentially resulting in more costly repairs.
10. Is it common for OBDII code P1774 in an Infiniti related to the Low Coast Brake Solenoid Valve function to recur even after repairs?
- If the root cause of the issue is not properly addressed during repairs, there is a possibility of the code recurring. It is crucial to ensure the repair is done correctly to prevent this.
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