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P0748 Saturn Code - Pressure Control Solenoid Circuit Electrical

Quick Answer

The P0748 code in a Saturn vehicle indicates a problem with the Pressure Control Solenoid Circuit Electrical. Common causes include Damaged wiring or connectors in the PCS circuit, Faulty Pressure Control Solenoid, Poor connection between the solenoid and the transmission control module. 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
P0748 Saturn indicates Pressure Control Solenoid Circuit Electrical.
Common causes
Common causes include Damaged wiring or connectors in the PCS circuit, Faulty Pressure Control Solenoid, Poor connection between the solenoid and the transmission control module.
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 12, 2024
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Code P0748 Saturn Description

The P0748 code in a Saturn vehicle indicates a problem with the Pressure Control Solenoid Circuit Electrical. This solenoid is responsible for controlling the hydraulic pressure in the transmission, which is crucial for smooth shifting and overall transmission performance. When this circuit is not functioning properly, it can lead to various issues with the transmission system.

OBDII Code P0748 Saturn - Pressure Control Solenoid Circuit Electrical
P0748 Saturn Code - Pressure Control Solenoid Circuit Electrical

Common Causes of P0748 Saturn

  1. Damaged wiring or connectors in the PCS circuit
  2. Faulty Pressure Control Solenoid
  3. Poor connection between the solenoid and the transmission control module
  4. Issues with the transmission control module
  5. Electrical problems in the transmission system

Symptoms of P0748 Saturn

  1. Erratic or harsh shifting
  2. Transmission slipping
  3. Decreased fuel efficiency
  4. Transmission overheating
  5. Illumination of the check engine light

How to Fix P0748 Saturn

  1. Diagnose the issue by using a scan tool to read the code and identify the specific problem with the PCS circuit.
  2. Inspect the wiring and connectors in the PCS circuit for any damage or corrosion. Repair or replace as necessary.
  3. Test the Pressure Control Solenoid to ensure it is functioning correctly. Replace if faulty.
  4. Check the connection between the solenoid and the transmission control module. Clean or repair any loose connections.
  5. Clear the diagnostic trouble codes and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0748 Saturn

The cost of repairing a P0748 code in a Saturn vehicle can vary depending on the specific underlying issue and the labor rates of the auto repair shop. On average, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $400. Overall, the total repair cost for addressing this code can be anywhere from $250 to $700. It is important to note that labor rates can vary significantly based on location, vehicle make and model, and the expertise of the technician. It is recommended to obtain quotes from multiple repair shops to compare prices and ensure a fair estimate.

What does this mean?

Tech Notes for P0748 Saturn

When a transmission solenoid is malfunctioned, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is dirty, it's recommended to change the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure and that the transmission will need to be rebuilt or replaced.

When is the Code Detected?

When the Powertrain Control Module (PCM) detects a continuous open or short in the Pressure Control (PC) solenoid valve circuit the P0748 code is set.

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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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