AutoCodes – Generic – P1772

P1772 Code - Low Coast Brake Solenoid Valve

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 PNP switch, vehicle speed sensor and accelerator pedal position 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: P1772 indicates Low Coast Brake Solenoid Valve.
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 15,411

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 Sep 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1772 Description

OBDII Code P1772 - Low Coast Brake Solenoid Valve - AutoCodes.com — P1772 Code - Low Coast Brake Solenoid Valve

What does this mean?

What are the Possible Causes of the DTC P1772?

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

How to Fix the DTC P1772?

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 P1772 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 P1772 code?

Need more information on how to fix the P1772 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1772 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1772 Ford — Throttle Position Sensor Short Circuit
P1772 Hyundai — Selection Position
P1772 Infiniti — Low Coast Brake Solenoid Valve
P1772 Mazda — Throttle Position Sensor Short Circuit
P1772 Nissan — Low Coast Brake Solenoid Valve

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 P1772 Code

1. What are the common symptoms of OBDII code P1772 (Low Coast Brake Solenoid Valve)?

- Common symptoms include harsh shifting, transmission slipping, and difficulty engaging gears.

2. What are the possible causes of OBDII code P1772 (Low Coast Brake Solenoid Valve)?

- Possible causes include a faulty solenoid valve, damaged wiring or connectors, low transmission fluid, or a malfunctioning transmission control module.

3. How can I diagnose the issue related to OBDII code P1772 (Low Coast Brake Solenoid Valve)?

- Diagnosis typically involves using a scan tool to retrieve the trouble code and inspecting the solenoid valve, wiring, and transmission fluid level for any issues.

4. Can I continue driving with OBDII code P1772 (Low Coast Brake Solenoid Valve) present?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the transmission if left unresolved.

5. How can I repair OBDII code P1772 (Low Coast Brake Solenoid Valve)?

- Repair options may include replacing the faulty solenoid valve, repairing damaged wiring or connectors, topping up transmission fluid, or reprogramming the transmission control module.

6. Are there any DIY tips for fixing OBDII code P1772 (Low Coast Brake Solenoid Valve)?

- DIY enthusiasts can start by checking the solenoid valve and its wiring for any visible damage before attempting any repairs. However, it is recommended to seek professional help for accurate diagnosis and repair.

7. Can a low transmission fluid level cause OBDII code P1772 (Low Coast Brake Solenoid Valve)?

- Yes, a low transmission fluid level can affect the operation of the solenoid valve and trigger this trouble code. Checking and topping up the transmission fluid level may help resolve the issue.

8. How much does it typically cost to repair OBDII code P1772 (Low Coast Brake Solenoid Valve)?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $200 to $600, including parts and labor.

9. Will resetting the OBDII code P1772 (Low Coast Brake Solenoid Valve) resolve the issue?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear. It is important to diagnose and address the root cause of the problem.

10. How long does it take to repair OBDII code P1772 (Low Coast Brake Solenoid Valve)?

- Repair times can vary based on the extent of the issue and the availability of parts. In general, it may take a few hours to a full day to complete the repair process.