AutoCodes – Chevrolet – P2721 2014 Chevrolet Silverado

P2721 2014 Chevrolet Silverado Code - Pressure Control Solenoid 4 Control Circuit High Voltage

Quick Answer

The pressure control solenoid 4 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: P2721 2014 Chevrolet Silverado indicates Pressure Control Solenoid 4 Control Circuit High 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 249

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P2721 2014 Chevrolet Silverado Description

The pressure control solenoid 4 is part of the control solenoid valve assembly which has no serviceable parts. The normally low-pressure control solenoid 4 regulates and directs oil pressure to the 2-6 clutch regulator valve. Increasing pressure control solenoid 4 pressure increases pressure to the 2-6 clutch regulator valve. The Transmission Control Module (TCM) varies the current to the pressure control solenoid 4 through a low-side driver. Increasing the current to pressure control solenoid 4 increases oil pressure by closing OFF the solenoid exhaust port. Decreasing the current to pressure control solenoid 4 decreases oil pressure by opening the exhaust port. Pressure control solenoid 4 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 an open or short to voltage on the pressure control solenoid 4 control circuit for 1 s.

OBDII Code P2721 2014 Chevrolet Silverado - Pressure Control Solenoid 4 Control Circuit High Voltage - AutoCodes.com — P2721 2014 Chevrolet Silverado Code - Pressure Control Solenoid 4 Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2721 2014 Chevrolet Silverado?

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 P2721 2014 Chevrolet Silverado?

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 P2721 2014 Chevrolet Silverado 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 P2721 2014 Chevrolet Silverado code?

Need more information on how to fix the P2721 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P2721 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2721 in a 2014 Chevrolet Silverado?

- Common symptoms include harsh shifting, transmission slipping, decreased fuel efficiency, and difficulty changing gears.

2. What does the OBDII code P2721 for Pressure Control Solenoid 4 Control Circuit High Voltage indicate in a 2014 Chevrolet Silverado?

- This code indicates that the powertrain control module (PCM) has detected high voltage in the control circuit of pressure control solenoid 4.

3. What are the possible causes of OBDII code P2721 in a 2014 Chevrolet Silverado?

- Possible causes include a faulty pressure control solenoid, damaged wiring or connectors in the solenoid circuit, low transmission fluid levels, or a malfunctioning PCM.

4. How serious is OBDII code P2721 in a 2014 Chevrolet Silverado?

- This code should be addressed promptly as it can lead to transmission issues, poor vehicle performance, and potential damage to the transmission if left unresolved.

5. Can I continue driving my 2014 Chevrolet Silverado with OBDII code P2721?

- It is not recommended to drive the vehicle with this code present, as it can cause further damage to the transmission and result in costly repairs.

6. How can I diagnose OBDII code P2721 in my 2014 Chevrolet Silverado?

- Diagnosing this code typically involves conducting a thorough inspection of the pressure control solenoid, checking the wiring and connectors for damage, and testing the transmission fluid levels.

7. How can I repair OBDII code P2721 in my 2014 Chevrolet Silverado?

- Repairing this code may involve replacing the pressure control solenoid, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the PCM.

8. Can a DIY enthusiast fix OBDII code P2721 in a 2014 Chevrolet Silverado?

- While some DIY enthusiasts may have the skills to address this code, it is recommended to consult a professional mechanic for proper diagnosis and repair to avoid further complications.

9. How much does it cost to repair OBDII code P2721 in a 2014 Chevrolet Silverado?

- The cost of repairing this code can vary depending on the extent of the issue, parts needed, and labor costs, but it may range from a few hundred to over a thousand dollars.

10. How can I prevent OBDII code P2721 from recurring in my 2014 Chevrolet Silverado?

- To prevent this code from recurring, it is essential to perform regular maintenance checks on the transmission, ensure proper fluid levels, and address any issues promptly to avoid further damage.