AutoCodes – Acura – P1778 Acura

P1778 Acura Code - Clutch Pressure Control Solenoid Valve 'C' Circuit

Quick Answer

P1778 Acura indicates Clutch Pressure Control Solenoid Valve 'C' Circuit. Common causes include Faulty Clutch Pressure Control Solenoid Valve 'C', Clutch Pressure Control Solenoid Valve 'C' harness is open or shorted, Clutch Pressure Control Solenoid Valve 'C' 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: P1778 Acura indicates Clutch Pressure Control Solenoid Valve 'C' Circuit.
Common causes: Common causes include Faulty Clutch Pressure Control Solenoid Valve 'C', Clutch Pressure Control Solenoid Valve 'C' harness is open or shorted, Clutch Pressure Control Solenoid Valve 'C' 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 12,556

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 18, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1778 Acura Description

OBDII Code P1778 Acura - Clutch Pressure Control Solenoid Valve 'C' Circuit - AutoCodes.com — P1778 Acura Code - Clutch Pressure Control Solenoid Valve 'C' Circuit

What does this mean?

What are the Possible Causes of the DTC P1778 Acura?

Faulty Clutch Pressure Control Solenoid Valve 'C'
Clutch Pressure Control Solenoid Valve 'C' harness is open or shorted
Clutch Pressure Control Solenoid Valve 'C' circuit poor electrical connection

How to Fix the DTC P1778 Acura?

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 P1778 Acura 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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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 P1778 Acura Code

1. What does the OBDII code P1778 mean on an Acura?

P1778 on an Acura refers to an issue with the Clutch Pressure Control Solenoid Valve 'C' Circuit, which is responsible for regulating hydraulic pressure in the transmission.

2. What are the common symptoms of code P1778 on an Acura?

Symptoms may include transmission slipping, harsh or delayed shifting, decreased fuel efficiency, and the Check Engine Light or Transmission Warning Light turning on.

3. What causes the P1778 code on an Acura?

Common causes include a faulty clutch pressure control solenoid valve, damaged or corroded wiring or connectors, low or contaminated transmission fluid, or a malfunctioning transmission control module (TCM).

4. Is it safe to drive with a P1778 code on an Acura?

Driving with a P1778 code is not recommended as it can lead to further transmission damage, reduced performance, and safety concerns while driving.

5. How can I fix the P1778 code on my Acura?

Fixes may include replacing the clutch pressure control solenoid valve, repairing or replacing damaged wiring or connectors, flushing and refilling the transmission fluid, or reprogramming or replacing the TCM.

6. How do I diagnose the P1778 code on an Acura?

Diagnosis typically involves using a scan tool to check live data, inspecting the solenoid valve and wiring for damage, testing electrical continuity, and verifying transmission fluid condition and level.

7. How much does it cost to repair the P1778 code on an Acura?

The cost varies depending on the repair needed, ranging from $100â€“$300 for solenoid replacement to $500 or more if TCM replacement or extensive wiring repairs are necessary.

8. Can low transmission fluid cause a P1778 code on an Acura?

Yes, low or contaminated transmission fluid can lead to improper solenoid function and trigger the P1778 code.

9. Will resetting the Check Engine Light clear the P1778 code?

Resetting the light may temporarily clear the code, but if the underlying issue isnâ€™t fixed, the code will likely reappear.

10. Do I need a professional mechanic to fix the P1778 code on my Acura?

While some basic checks like inspecting wiring or fluid levels can be done at home, diagnosing and repairing the solenoid or TCM often requires professional tools and expertise.