AutoCodes – GMC – P2812 2014 GMC Sierra

P2812 2014 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Open

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: P2812 2014 GMC Sierra indicates Transmission Control Solenoid Valve 7 Control Circuit Open.
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 204

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 P2812 2014 GMC Sierra 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 P2812 2014 GMC Sierra - Transmission Control Solenoid Valve 7 Control Circuit Open - AutoCodes.com — P2812 2014 GMC Sierra Code - Transmission Control Solenoid Valve 7 Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2812 2014 GMC Sierra?

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 P2812 2014 GMC Sierra?

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 P2812 2014 GMC Sierra 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 P2812 2014 GMC Sierra 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 P2812 2014 GMC Sierra Code

1. What does the OBDII code P2812 mean on a 2014 GMC Sierra?

The code P2812 indicates an open circuit issue in the Transmission Control Solenoid Valve 7 control circuit.

2. What are the common symptoms of code P2812 in a 2014 GMC Sierra?

Symptoms may include harsh or delayed shifting, transmission slipping, reduced fuel efficiency, or the vehicle entering "limp mode."

3. What causes the P2812 code to appear in a 2014 GMC Sierra?

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

4. Can a dirty transmission fluid cause the P2812 code?

While dirty or contaminated transmission fluid is not a direct cause, it can contribute to solenoid or valve block issues that trigger the code.

5. How do I diagnose the P2812 code in my 2014 GMC Sierra?

Use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, and test the solenoid and TCM with a multimeter to check for continuity.

6. Can I drive my 2014 GMC Sierra with the P2812 code?

Driving with this code is not recommended, as it can lead to further transmission damage or unsafe driving conditions.

7. How do I fix the P2812 code on a 2014 GMC Sierra?

Repairs may involve replacing the faulty solenoid, repairing or replacing damaged wiring, or reprogramming or replacing the TCM.

8. How much does it cost to repair the P2812 code in a 2014 GMC Sierra?

Repair costs vary, but replacing a transmission solenoid typically costs $200â€“$400, while wiring repairs or TCM replacement could add to the expense.

9. Can a weak battery trigger the P2812 code?

A weak or failing battery can cause electrical issues that may indirectly affect the circuit, but it is not a common cause of this specific code.

10. Is it necessary to reprogram the TCM after fixing the P2812 code?

In some cases, after repairing the solenoid or circuit, reprogramming or resetting the TCM may be necessary to clear the code and ensure proper operation.