Engine-CodesCadillac – P2814 Cadillac

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

Quick Answer

The P2814 diagnostic trouble code for Cadillac vehicles specifically points to an issue with the Transmission Control Solenoid Valve 7 Control Circuit experiencing low voltage. Common causes include Faulty transmission control solenoid valve, Wiring issues such as short circuits or open circuits in the control circuit, Corrosion or poor connections in the electrical connectors. 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 Cadillac indicates Transmission Control Solenoid Valve 7 Control Circuit Low Voltage.
Common causes
Common causes include Faulty transmission control solenoid valve, Wiring issues such as short circuits or open circuits in the control circuit, Corrosion or poor connections in the electrical connectors.
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2814 Cadillac Description

The P2814 diagnostic trouble code for Cadillac vehicles specifically points to an issue with the Transmission Control Solenoid Valve 7 Control Circuit experiencing low voltage. This solenoid valve plays a crucial role in controlling the flow of transmission fluid within the transmission system. The transmission control module (TCM) sends signals to the solenoid valve to regulate the pressure and flow of transmission fluid, which in turn affects the shifting of gears and overall performance of the transmission.

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

Common Causes of P2814 Cadillac

  1. Faulty transmission control solenoid valve
  2. Wiring issues such as short circuits or open circuits in the control circuit
  3. Corrosion or poor connections in the electrical connectors
  4. Issues with the transmission control module (TCM)
  5. Low transmission fluid level or contaminated fluid affecting solenoid operation

Symptoms of P2814 Cadillac

  1. Erratic shifting or difficulty shifting gears
  2. Harsh shifting or jerking during gear changes
  3. Delayed engagement when shifting from park to drive or reverse
  4. Transmission slipping or hesitation
  5. Illumination of the Check Engine Light

How to Fix P2814 Cadillac

  1. Diagnose the specific cause of the low voltage condition by using a scan tool to retrieve the trouble codes and perform electrical testing on the solenoid valve circuit.
  2. Inspect and test the transmission control solenoid valve to determine if it is functioning properly or needs replacement.
  3. Check the wiring harness and connectors for any damage, corrosion, or loose connections, and repair or replace as necessary.
  4. Address any issues with the transmission control module by reprogramming or replacing it if needed.
  5. Refill or replace transmission fluid as required, ensuring the correct level and type of fluid for proper solenoid operation.

Cost to Fix P2814 Cadillac

The cost of repairing a Transmission Control Solenoid Valve 7 Control Circuit Low Voltage issue can vary depending on the specific cause of the problem and the labor rates in your area. Typically, replacing a faulty solenoid valve can range from $150 to $300 for parts, with additional costs for labor. Electrical diagnostics and repairs may incur additional charges, and overall repair costs can amount to $300 to $700 or more. It is recommended to consult with a trusted auto repair shop for a more accurate cost estimate based on your vehicle's make and model.

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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.

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