AutoCodes – Buick – P2827 Buick

P2827 Buick Code - Transmission Control Solenoid Valve 9 Control Circuit High Voltage

Quick Answer

The Transmission Control Solenoid Valve Solenoid Valve is 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 Transmission Control Solenoid Valve. 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: P2827 Buick indicates Transmission Control Solenoid Valve 9 Control Circuit High Voltage.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve.
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 260

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 P2827 Buick Description

The Transmission Control Solenoid Valve Solenoid Valve is 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 Transmission Control 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). The Diagnostic Trouble Code (DTC) is set when the Transmission Control Solenoid Valve Control Circuit commanded state does not match the actual state for greater than 1 s.

OBDII Code P2827 Buick - Transmission Control Solenoid Valve 9 Control Circuit High Voltage - AutoCodes.com — P2827 Buick Code - Transmission Control Solenoid Valve 9 Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2827 Buick?

Low transmission fluid level
Dirty transmission fluid
Faulty Transmission Control Solenoid Valve
Transmission Control Solenoid Valve harness is open or shorted
Transmission Control Solenoid Valve circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P2827 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 P2827 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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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 P2827 Buick Code

What does the OBDII code P2827 mean for a Buick?

The code P2827 indicates a high voltage issue in the control circuit for Transmission Control Solenoid Valve 9, which regulates hydraulic pressure in the transmission system.

What are the common symptoms of code P2827 in a Buick?

Symptoms can include erratic shifting, transmission slippage, poor fuel efficiency, or the vehicle going into limp mode.

What causes the P2827 code to trigger in a Buick?

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

Can a bad transmission control solenoid cause the P2827 code?

Yes, a defective solenoid can cause high voltage in the circuit, triggering the P2827 code.

How do I diagnose the P2827 code in a Buick?

Diagnosis typically involves inspecting the solenoid wiring and connectors for damage, testing the solenoid for proper operation, and using a scan tool to monitor TCM voltage levels.

Can I drive my Buick with a P2827 code?

While the vehicle may still be drivable, continuing to drive with this code can lead to further transmission damage or unsafe driving conditions.

How do I fix the P2827 code in a Buick?

Repairs may include replacing the faulty transmission solenoid, repairing or replacing damaged wiring, or reprogramming or replacing the TCM if necessary.

What tools are needed to fix the P2827 code?

Youâ€™ll typically need a scan tool, a multimeter, and basic automotive tools for inspecting and replacing components.

How much does it cost to repair the P2827 code on a Buick?

Repair costs can vary, ranging from $150 to $400 for solenoid replacement, or higher if the TCM needs replacement or reprogramming.

Can a low battery or alternator issue cause the P2827 code?

Unstable voltage from a failing alternator or battery can sometimes lead to electrical issues, but itâ€™s less common for these to directly cause the P2827 code.