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P2814 Chevrolet Code - Transmission Control Solenoid Valve 7 Control Circuit Low Voltage

Quick Answer

The P2814 code for Chevrolet vehicles indicates a problem with the Transmission Control Solenoid Valve 7 Control Circuit, specifically indicating low voltage. Common causes include Faulty Transmission Control Solenoid Valve 7: The solenoid itself may be defective and not functioning properly, Damaged wiring or connectors: Issues with the electrical connections to the solenoid can disrupt the control circuit, Malfunctioning Engine Control Module (ECM): The ECM, which controls the solenoids, may be faulty and not sending the correct signals. 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
P2814 Chevrolet indicates Transmission Control Solenoid Valve 7 Control Circuit Low Voltage.
Common causes
Common causes include Faulty Transmission Control Solenoid Valve 7: The solenoid itself may be defective and not functioning properly, Damaged wiring or connectors: Issues with the electrical connections to the solenoid can disrupt the control circuit, Malfunctioning Engine Control Module (ECM): The ECM, which controls the solenoids, may be faulty and not sending the correct signals.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2814 Chevrolet Description

The P2814 code for Chevrolet vehicles indicates a problem with the Transmission Control Solenoid Valve 7 Control Circuit, specifically indicating low voltage. The transmission control solenoid valves are vital components of the transmission system, responsible for regulating the flow of transmission fluid and engaging different gears. Solenoids are electromechanical valves that are controlled by the vehicle's engine control module (ECM) to facilitate smooth gear shifts and overall transmission operation.

OBDII Code P2814 Chevrolet - Transmission Control Solenoid Valve 7 Control Circuit Low Voltage
P2814 Chevrolet Code - Transmission Control Solenoid Valve 7 Control Circuit Low Voltage

Common Causes of P2814 Chevrolet

  1. Faulty Transmission Control Solenoid Valve 7: The solenoid itself may be defective and not functioning properly.
  2. Damaged wiring or connectors: Issues with the electrical connections to the solenoid can disrupt the control circuit.
  3. Malfunctioning Engine Control Module (ECM): The ECM, which controls the solenoids, may be faulty and not sending the correct signals.
  4. Power supply issues: Problems with the power supply to the solenoid can result in low voltage readings and trigger the code.
  5. General electrical issues: Any overall electrical problems in the vehicle can impact the transmission control system and lead to this code.

Symptoms of P2814 Chevrolet

  1. Harsh or delayed shifting: The vehicle may exhibit rough or delayed gear shifts, making driving uncomfortable and potentially causing further transmission damage.
  2. Poor acceleration: A decrease in acceleration performance can be noticed, with the vehicle struggling to gain speed efficiently.
  3. Decreased fuel efficiency: The engine may work harder due to transmission inefficiencies, leading to increased fuel consumption.
  4. Transmission slippage: The transmission may slip out of gear intermittently, causing a loss of power and potential safety hazards.
  5. Illuminated Check Engine Light: The P2814 code will trigger the Check Engine Light on the dashboard, indicating a problem that needs attention.

How to Fix P2814 Chevrolet

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the fault codes and perform further testing to identify the exact cause of the low voltage in the Transmission Control Solenoid Valve 7 circuit.
  2. Inspect wiring and connectors: Check the wiring harness and connectors for any damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the solenoid valve: Verify the functionality of the Transmission Control Solenoid Valve 7 by testing it with a multimeter or applying power directly to the solenoid.
  4. Check the ECM: Ensure the ECM is functioning correctly and sending the appropriate signals to the solenoid. Update or replace the ECM if necessary.
  5. Clear codes and test drive: After making the repairs, clear the fault codes from the ECM and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P2814 Chevrolet

The typical repair costs for addressing the P2814 code related to the Transmission Control Solenoid Valve 7 Control Circuit Low Voltage can vary depending on the specific cause of the issue and the extent of repairs needed. In general, parts for solenoid replacement or wiring repairs can range from $100 to $300, while labor costs may add another $100 to $200. Overall, the repair for this code could cost between $200 and $500, including parts and labor.

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Information for Specific Chevrolet Models

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 P2814 Chevrolet Code

1. What does the OBDII code P2814 mean in a Chevrolet vehicle?

The P2814 code indicates a low voltage issue in the control circuit for Transmission Control Solenoid Valve 7.

2. What are the common symptoms of code P2814 in a Chevrolet?

Common symptoms include harsh or delayed shifting, transmission slippage, decreased fuel efficiency, or the transmission being stuck in one gear.

3. What causes the P2814 code to appear in a Chevrolet?

Potential causes include a faulty transmission control solenoid, damaged wiring or connectors, a failed transmission control module (TCM), or low transmission fluid.

4. Can driving with the P2814 code cause further damage?

Yes, driving with this code can cause further transmission issues or damage if not addressed promptly.

5. How do I diagnose the P2814 code in a Chevrolet?

Diagnosis typically involves checking the transmission fluid level, inspecting wiring and connectors for damage, testing the solenoid for proper function, and scanning the TCM for additional codes.

6. How do I fix the P2814 code in my Chevrolet?

Fixes may include replacing or repairing the control solenoid, fixing damaged wiring or connectors, updating or replacing the TCM, or refilling or replacing the transmission fluid.

7. How much does it cost to repair the P2814 code on a Chevrolet?

Repair costs can vary but typically range from $150 to $1,000, depending on whether you need to replace the solenoid, repair wiring, or replace the TCM.

8. Can low transmission fluid trigger code P2814?

Yes, low or contaminated transmission fluid can cause solenoid malfunctions, potentially triggering the P2814 code.

9. Do I need to reprogram the TCM after fixing the P2814 code?

In some cases, especially if the TCM is replaced or updated, reprogramming may be required to ensure proper operation.

10. Can a bad battery or alternator cause the P2814 code?

Yes, insufficient voltage from a failing battery or alternator can cause electrical issues, including triggering the P2814 code.

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