Engine-CodesGeneric – P2738

P2738 Code - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage

Quick Answer

The P2738 diagnostic trouble code (DTC) refers to an issue with the transmission control solenoid valve 6 control circuit experiencing low voltage. Common causes include Faulty transmission control solenoid valve 6, Wiring or connection issues in the control circuit, Low transmission fluid levels or contaminated fluid. 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
P2738 indicates Transmission Control Solenoid Valve 6 Control Circuit Low Voltage.
Common causes
Common causes include Faulty transmission control solenoid valve 6, Wiring or connection issues in the control circuit, Low transmission fluid levels or contaminated fluid.
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 07, 2024
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Code P2738 Description

The P2738 diagnostic trouble code (DTC) refers to an issue with the transmission control solenoid valve 6 control circuit experiencing low voltage. The transmission control solenoid valve plays a crucial role in regulating the flow of transmission fluid within the transmission system, affecting gear shifting and overall transmission performance. When the control circuit detects low voltage in solenoid valve 6, it can lead to erratic transmission behavior, difficulty shifting gears, and potential long-term damage to the transmission system if left unresolved.

OBDII Code P2738 - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage
P2738 Code - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage

Common Causes of P2738

  1. Faulty transmission control solenoid valve 6
  2. Wiring or connection issues in the control circuit
  3. Low transmission fluid levels or contaminated fluid
  4. Electrical issues such as a blown fuse or relay
  5. Faulty transmission control module

Symptoms of P2738

  1. Delayed or rough shifting between gears
  2. Slipping gears or difficulty engaging gears
  3. Harsh or erratic transmission behavior
  4. Illumination of the Check Engine Light
  5. Reduced fuel efficiency due to transmission inefficiency

How to Fix P2738

  1. Diagnose the issue by using a scan tool to retrieve the trouble codes and perform a thorough inspection of the transmission control solenoid valve 6 and control circuit.
  2. Check the transmission fluid level and condition, ensuring it is at the correct level and free from contamination.
  3. Inspect the wiring and connections in the control circuit for any damage, corrosion, or loose connections, repairing or replacing as necessary.
  4. Test the transmission control solenoid valve 6 for proper operation and replace it if found to be faulty.
  5. Clear the trouble codes, reset the transmission control module, and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2738

The typical repair costs for addressing the P2738 code, involving the transmission control solenoid valve 6 control circuit low voltage issue, can vary depending on the specific cause of the problem and the cost of parts and labor. On average, the repair cost for this issue can range from $200 to $500, including parts and labor. However, it is essential to note that actual repair costs can vary based on factors such as the vehicle make and model, the location of the repair shop, and the extent of the repairs needed. It is recommended to obtain quotes from reputable auto repair shops to get a more accurate estimate based on your specific circumstances.

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Code P2738 Information for Specific Makes

  • P2738 Buick — Transmission Control Solenoid Valve 6 Control Circuit Low Voltage
  • P2738 Cadillac — Transmission Control Solenoid Valve 6 Control Circuit Low Voltage
  • P2738 Chevrolet — Transmission Control Solenoid Valve 6 Control Circuit Low Voltage
  • P2738 Dodge — Pressure Control Solenoid 'F' Control Circuit Low
  • P2738 GMC — Transmission Control Solenoid Valve 6 Control Circuit Low Voltage
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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