P1774 Nissan 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 Nissan 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 Nissan Description
What are the Possible Causes of the DTC P1774 Nissan?
- 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 Nissan?
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 Nissan RE5R05A Transmission Factory Service Bulletin OBDII Code P1774
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1774 Nissan 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 Nissan code?
Need more information on how to fix the P1774 Nissan code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1774 Nissan code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1774 Nissan Code
1. What are the common symptoms of OBDII code P1774 in a Nissan related to the Low Coast Brake Solenoid Valve function?
Symptoms may include harsh shifting, transmission slipping, poor acceleration, and the vehicle going into "limp mode."
2. What are the possible causes of OBDII code P1774 in a Nissan?
Common causes include a faulty low coast brake solenoid valve, damaged wiring or connectors, low transmission fluid levels, or internal transmission issues.
3. How can I diagnose the low coast brake solenoid valve in my Nissan when troubleshooting OBDII code P1774?
You can use a multimeter to test the solenoid for continuity and proper resistance values. Additionally, inspect the wiring and connectors for any signs of damage.
4. Can driving with OBDII code P1774 in a Nissan cause further damage to the vehicle?
Continued driving with this code may lead to further transmission issues, reduced fuel efficiency, and potential damage to other transmission components.
5. How do I repair OBDII code P1774 in a Nissan related to the Low Coast Brake Solenoid Valve?
Repair options may include replacing the low coast brake solenoid valve, repairing damaged wiring or connectors, ensuring proper transmission fluid levels, and addressing any internal transmission problems.
6. Is it safe to continue driving my Nissan with OBDII code P1774 present?
It is not recommended to drive your vehicle with this code present, as it can lead to further transmission issues and potentially unsafe driving conditions.
7. Can I reset OBDII code P1774 in my Nissan without fixing the underlying issue?
While you can clear the code temporarily, it will likely return until the root cause, such as the low coast brake solenoid valve issue, is addressed.
8. How much does it typically cost to repair OBDII code P1774 in a Nissan at a professional mechanic or dealership?
Costs can vary depending on the exact issue and location, but repairs for this code may range from $200 to $500 or more, including parts and labor.
9. Are there any preventive maintenance steps I can take to avoid encountering OBDII code P1774 in my Nissan?
Regularly checking and maintaining your vehicle's transmission fluid levels, conducting routine inspections of wiring and connectors, and addressing any transmission issues promptly can help prevent this code from occurring.
10. Will OBDII code P1774 cause my Nissan to fail an emissions test?
Yes, OBDII code P1774 can cause your Nissan to fail an emissions test, as it indicates a malfunction related to the transmission system.
Discuss the causes and fixes for P1774 Nissan OBDII Code
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How quick does this need to be fixed? Don't have the money right now does it cause electrical issues that'll drain the battery or worse?
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What model and year is your vehicle? do you have any other symptoms, besides the engine light? Problems with the Low Coast Brake Solenoid Valve (P1774 Code) usually wont cause battery issues.
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It's a 2006 Nissan Titan. The light and twice it wouldn't reverse. If you turn it off and restart it, it does reverse. It's not an every day truck so wanted to get battery replaced but was gonna wait if it could possibly be draining the battery.
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It won't drain the battery, but it will cause the no reverse issues. Before replacing any parts, make sure you check the transmission fluid level and condition.
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What model and year is your Nissan? You may have to replace the transmission Valve Body and that can cost you around $1000
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Hi, i've Nissan Murano 2006 SE,
1. My broke down and was not running in driver mode.
2. Right now, i've changed the alternator, car is running now but i'm feeling like transmission problem in it.
3. On scan i got code P1774 transmission etc..
4. Car RMP is so high. Car couldn't go above 120 even with full escalator 5.5 rpm.Could it be due to transmission failure or due to transmission fluid? Please help me, i'm in great fix now. I'm driving this car for 2 days on same condition. What should i do now check the transmission fluid first?
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Unfortunately, more than likely is a transmission failure, but make sure you check the transmission fluid level and condition.
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i have a 05 pathfinder, getting the fault code(p1774) 4 months after a transmission rebuild. But the car is shifting as usual.
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Have you tried clearing the code? I suggest clearing the code, if the code persist you may have to take it back to the place the rebuilt the transmission. The P1774 code is for the Low coast brake solenoid valve which is part of the "Transmission Valve Body" inside the transmission.
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I have Nissan Xterra 2012. Mechanic open dashboard to fix AC leakage after that I am getting P1774 code. 4x4 light is ON and 4x4 yellow display is blank.
One time from computer they reset the code. I switched to 4H 4L and 2 wheels and everything was normal until I turn off the car and turn back on.
I believe there is some low voltage or lose connector behind dashboard. Any suggestion will be much appreciated.
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Unfortunately, there is nothing in the factory service manual that indicates a loose connector, or anything disconnected behind the dashboard. The Low Coast Brake Solenoid Valve is inside the transmission and is controlled by the Transmission Control Module (TCM), which is also inside the transmission. My only suggestion is to check the transmission fluid level, clear the codes and drive your Xterra for a few miles, then check for codes again.
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