AutoCodes – Cadillac – P2720 Cadillac

P2720 Cadillac Code - Pressure Control Solenoid 4 Control Circuit Low 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: P2720 Cadillac indicates Pressure Control Solenoid 4 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 416

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 P2720 Cadillac 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 a short to ground on the pressure control solenoid 4 control circuit for 1 s.

OBDII Code P2720 Cadillac - Pressure Control Solenoid 4 Control Circuit Low Voltage - AutoCodes.com — P2720 Cadillac Code - Pressure Control Solenoid 4 Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2720 Cadillac?

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 P2720 Cadillac?

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 P2720 Cadillac 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 P2720 Cadillac Code

1. What are the common symptoms of OBDII code P2720 in a Cadillac related to the Pressure Control Solenoid 4 Control Circuit Low Voltage issue?

- Common symptoms include rough shifting, hesitation during acceleration, poor fuel efficiency, and an illuminated check engine light.

2. What are some possible causes of the Pressure Control Solenoid 4 Control Circuit Low Voltage code in a Cadillac?

- Potential causes may include a faulty pressure control solenoid, damaged wiring or connectors, low transmission fluid levels, or internal transmission issues.

3. How can I diagnose the Pressure Control Solenoid 4 Control Circuit Low Voltage issue in my Cadillac?

- Diagnosing this issue typically involves using a scan tool to retrieve the OBDII code, checking the transmission fluid level and condition, and inspecting the wiring and connectors related to the pressure control solenoid.

4. Can I continue driving my Cadillac with the P2720 code present?

- It is not recommended to continue driving with the P2720 code present, as it can lead to further damage to the transmission and potentially cause unsafe driving conditions.

5. How can I repair the Pressure Control Solenoid 4 Control Circuit Low Voltage issue in my Cadillac?

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

6. Are there any DIY tips for addressing the P2720 code in a Cadillac?

- While some basic troubleshooting like checking for loose connections or ensuring proper fluid levels can be done by DIY enthusiasts, complex repairs involving the transmission should be handled by a professional mechanic.

7. Will resetting the OBDII code on my Cadillac make the issue go away?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the P2720 code is not addressed, it is likely to reoccur.

8. Can a bad battery or alternator cause the Pressure Control Solenoid 4 Control Circuit Low Voltage code in a Cadillac?

- A weak or failing battery or alternator can sometimes lead to electrical issues that may trigger the P2720 code, so it's worth checking the battery and charging system as part of the diagnosis.

9. Is the P2720 code specific to Cadillac vehicles, or can it occur in other makes and models?

- While the specific code P2720 may be unique to Cadillac, similar issues related to pressure control solenoids and voltage can occur in other vehicles with automatic transmissions.

10. How much can I expect to pay for professional repairs related to the Pressure Control Solenoid 4 Control Circuit Low Voltage issue in my Cadillac?

- The cost of repairs for the P2720 code can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.