AutoCodes – Chevrolet – P2729 2018 Chevrolet Silverado

P2729 2018 Chevrolet Silverado Code - Pressure Control Solenoid Valve 5 Control Circuit Low Voltage

Quick Answer

The pressure control solenoid 5 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
P2729 2018 Chevrolet Silverado indicates Pressure Control Solenoid Valve 5 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 278
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
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Code P2729 2018 Chevrolet Silverado Description

The pressure control solenoid 5 is part of the control solenoid valve assembly which has no serviceable parts. The normally low-pressure control solenoid 5 regulates and directs oil pressure to the 1-2-3-4 clutch regulator valve and 1-2-3-4 clutch boost valve. Increasing pressure control solenoid 5 pressure increases pressure to the 1-2-3-4 clutch. The Transmission Control Module varies the current to the pressure control solenoid 5 through a low-side driver. Increasing the current to pressure control solenoid 5 increases oil pressure by closing OFF the solenoid exhaust port. Decreasing the current to pressure control solenoid 5 decreases oil pressure by opening the exhaust port. Pressure control solenoid 5 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 clutch pressure control solenoid valve 5 control circuit for 1 s.
OBDII Code P2729 2018 Chevrolet Silverado - Pressure Control Solenoid Valve 5 Control Circuit Low Voltage - AutoCodes.com
P2729 2018 Chevrolet Silverado Code - Pressure Control Solenoid Valve 5 Control Circuit Low Voltage

What are the Possible Causes of the DTC P2729 2018 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 P2729 2018 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 P2729 2018 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 P2729 2018 Chevrolet Silverado code?

Need more information on how to fix the P2729 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P2729 2018 Chevrolet Silverado Code

1. What does the OBDII code P2729 mean on a 2018 Chevrolet Silverado?

The P2729 code indicates a "Pressure Control Solenoid Valve 5 Control Circuit Low Voltage," meaning the transmission control module (TCM) has detected an electrical issue with the circuit controlling solenoid 5.

2. What are the common symptoms of the P2729 code in a 2018 Silverado?

Symptoms may include harsh or delayed shifting, transmission slipping, poor fuel economy, the check engine light being on, or the vehicle going into limp mode.

3. What causes the P2729 code to appear on a 2018 Chevrolet Silverado?

Common causes include a faulty pressure control solenoid, damaged wiring or connectors in the circuit, low transmission fluid, or a malfunctioning transmission control module (TCM).

4. Can low transmission fluid cause the P2729 code?

Yes, low or contaminated transmission fluid can affect solenoid operation and trigger the P2729 code.

5. How do you diagnose the P2729 code on a 2018 Chevrolet Silverado?

Diagnosis involves scanning for codes, inspecting transmission fluid, checking the wiring and connectors in the solenoid 5 circuit, testing the solenoid with a multimeter, and ruling out TCM issues.

6. Can you drive a 2018 Silverado with a P2729 code active?

Driving with this code is not recommended as it can cause further transmission damage or unsafe driving conditions due to shifting issues.

7. How is the P2729 code fixed on a 2018 Chevrolet Silverado?

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

8. How much does it cost to repair the P2729 code on a 2018 Chevrolet Silverado?

Repair costs vary but typically range from $150 to $400 for solenoid replacement, depending on labor and parts. Wiring or TCM repairs may cost more.

9. Can a faulty TCM cause the P2729 code in a 2018 Silverado?

Yes, a malfunctioning TCM can fail to properly control the solenoid circuit, leading to the P2729 code.

10. How can I prevent the P2729 code from occurring in the future?

Regularly check and maintain transmission fluid levels, schedule routine transmission service, and inspect wiring and connectors for damage.

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