AutoCodes – Buick – P2764 Buick

P2764 Buick Code - Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage

Quick Answer

The Torque Converter Clutch (TCC) pressure control solenoid is part of the control solenoid valve assembly which has no serviceable parts. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Control Solenoid Valve Assembly. 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: P2764 Buick indicates Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Control Solenoid Valve Assembly.
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 3,183

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 Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2764 Buick Description

The Torque Converter Clutch (TCC) pressure control solenoid is part of the control solenoid valve assembly which has no serviceable parts. The normally low TCC pressure control solenoid regulates oil pressure to the TCC regulator valve and TCC control valve. Increasing TCC pressure control solenoid oil pressure increases oil pressure to the torque converter to apply the clutch. The Transmission Control Module (TCM) varies the current to the TCC pressure control solenoid through a low-side driver. Increasing current to the TCC pressure control solenoid increases oil pressure by closing OFF the solenoid exhaust port. Decreasing current to the TCC pressure control solenoid decreases oil pressure by opening up the solenoid exhaust port. The TCC pressure control solenoid power is supplied by the Transmission Control Module through a high-side driver. The high-side driver protects the circuit and components from excessive current flow. If excessive current flow is detected, the high side driver will turn OFF. When the fault is corrected, the high-side driver will reset.
The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Module detects a short to ground on the TCC pressure control solenoid valve control circuit for 1 s.

OBDII Code P2764 Buick - Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage - AutoCodes.com — P2764 Buick Code - Torque Converter Clutch Pressure Control Solenoid Valve Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2764 Buick?

Low transmission fluid level
Dirty transmission fluid
Faulty Control Solenoid Valve Assembly
Control Solenoid Valve Assembly harness or connectors
Control Solenoid Valve Assembly circuit is open or shorted

How to Fix the DTC P2764 Buick?

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 P2764 Buick 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 P2764 Buick Code

What does the OBDII code P2764 mean for a Buick?

The P2764 code indicates a low voltage issue in the control circuit of the Torque Converter Clutch Pressure Control Solenoid Valve.

What are the symptoms of code P2764 on a Buick?

Symptoms may include transmission slipping, reduced fuel efficiency, harsh shifting, or the Check Engine Light turning on.

What causes the P2764 code to appear on a Buick?

Common causes include wiring issues like damaged or corroded wires, a faulty solenoid, a malfunctioning transmission control module (TCM), or low transmission fluid.

Can I drive my Buick with the P2764 code?

Driving with this code is not recommended, as it may lead to further transmission damage or reduced performance.

How is the P2764 code diagnosed on a Buick?

A mechanic will use a scan tool to check for stored codes, inspect the wiring and solenoid, test the TCM, and check the transmission fluid level and condition.

How do you fix the P2764 code on a Buick?

Repairs may include replacing the solenoid, repairing or replacing damaged wiring, updating or replacing the TCM, or refilling or flushing the transmission fluid.

How much does it cost to repair the P2764 code on a Buick?

Costs vary depending on the exact issue but typically range from $200 to $600 for parts and labor.

Can low transmission fluid cause the P2764 code?

Yes, low or contaminated transmission fluid can cause the solenoid to malfunction and trigger the P2764 code.

What happens if the Torque Converter Clutch Pressure Control Solenoid fails?

A failed solenoid can lead to improper torque converter operation, causing transmission issues such as slipping, overheating, or poor fuel efficiency.

Is the P2764 code specific to Buick vehicles?

No, while it is common in Buicks, the P2764 code can appear in other vehicles with similar torque converter clutch systems.