AutoCodes – Generic – P2728

P2728 Code - Pressure Control Solenoid 'E' Control Circuit Range/Performance

Quick Answer

The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid valve 'E'. 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: P2728 indicates Pressure Control Solenoid 'E' Control Circuit Range/Performance.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid valve 'E'.
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 6,490

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 Jan 30, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P2728 Description

The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the PC solenoid valve, which ultimately decreases line pressure. The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM).

OBDII Code P2728 - Pressure Control Solenoid 'E' Control Circuit Range/Performance - AutoCodes.com — P2728 Code - Pressure Control Solenoid 'E' Control Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P2728?

Low transmission fluid level
Dirty transmission fluid
Faulty line pressure solenoid valve 'E'
Line pressure solenoid valve 'E' harness is open or shorted
Line pressure solenoid valve 'E' circuit poor electrical connection

How to Fix the DTC P2728?

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 P2728 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 P2728 code?

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Information for Specific Makes

P2728 Buick — Pressure Control Solenoid Valve 5 Performance
P2728 Cadillac — Pressure Control Solenoid Valve Performance
P2728 Chevrolet — Pressure Control Solenoid Valve Performance
P2728 Dodge — Pressure Control Solenoid 'E' Control Circuit Range/Performance
P2728 GMC — Pressure Control Solenoid Valve Performance

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.