P1774 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 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 Description
What are the Possible Causes of the DTC P1774?
- 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?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1774 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 Makes
- P1774 Hyundai — CRC Sensor
- P1774 Infiniti — Low Coast Brake Solenoid Valve Function
- P1774 Nissan — Low Coast Brake Solenoid Valve Function
Frequently Asked Questions about P1774 Code
1. What are the common symptoms of OBDII code P1774 (Low Coast Brake Solenoid Valve Function)?
- Common symptoms include harsh shifting, transmission slipping, and difficulty shifting gears.
2. What are the possible causes of OBDII code P1774 (Low Coast Brake Solenoid Valve Function)?
- The code can be triggered by issues with the low coast brake solenoid valve itself, wiring problems, or a faulty transmission control module.
3. How serious is OBDII code P1774 (Low Coast Brake Solenoid Valve Function)?
- Ignoring this code can lead to further transmission damage and potential safety hazards, so it is recommended to address it promptly.
4. Can I continue driving with OBDII code P1774 (Low Coast Brake Solenoid Valve Function) present?
- It is not recommended to continue driving with this code present as it can cause more severe transmission issues over time.
5. How can I diagnose OBDII code P1774 (Low Coast Brake Solenoid Valve Function)?
- Proper diagnosis involves using a scan tool to read the code, checking the low coast brake solenoid valve and related components for faults, and testing the wiring for continuity.
6. What are some repair tips for fixing OBDII code P1774 (Low Coast Brake Solenoid Valve Function)?
- Repair tips include inspecting and repairing any damaged wiring, replacing the low coast brake solenoid valve if faulty, and resetting the transmission control module.
7. Can OBDII code P1774 (Low Coast Brake Solenoid Valve Function) be caused by other issues?
- While the code is most commonly related to the low coast brake solenoid valve, it can also be triggered by issues with the transmission control module or wiring.
8. How much does it typically cost to repair OBDII code P1774 (Low Coast Brake Solenoid Valve Function)?
- The cost of repairs can vary depending on the extent of the issue, but it may range from $200 to $500 for parts and labor.
9. Will OBDII code P1774 (Low Coast Brake Solenoid Valve Function) cause my vehicle to fail an emissions test?
- Yes, this code can cause your vehicle to fail an emissions test as it indicates a malfunction in the transmission system.
10. Is it possible to prevent OBDII code P1774 (Low Coast Brake Solenoid Valve Function) from occurring?
- Regular maintenance of the transmission system, including fluid checks and replacements, can help prevent issues that may trigger this code.
Discuss the causes and fixes for P1774 OBDII Code
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