AutoCodes – Volvo – P0748 Volvo

P0748 Volvo Code - Pressure Control Solenoid 'A' Electrical

Quick Answer

This fault code is stored in the electronic control module when a malfunction is detected with the pressure control solenoid circuit. Common causes include Faulty Transmission Fluid Pressure Solenoid, Transmission Fluid Pressure Solenoid harness is open or shorted, Transmission Fluid Pressure Solenoid circuit poor electrical connection. 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 Volvo indicates Pressure Control Solenoid 'A' Electrical.
Common causes
Common causes include Faulty Transmission Fluid Pressure Solenoid, Transmission Fluid Pressure Solenoid harness is open or shorted, Transmission Fluid Pressure Solenoid circuit poor electrical connection.
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 1,509
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 10, 2021
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Code P0748 Volvo Description

This fault code is stored in the electronic control module when a malfunction is detected with the pressure control solenoid circuit. The mechanical condition of the transmission should be inspected prior to any electrical fault finding. An actuator test can be carried out on the pressure control solenoid and a current clamp can be used to monitor the condition of the winding. Electrical tests such as winding resistance, checking for short to power or short to ground can be carried out also. Normally the resistance of a solenoid winding is 10 to 25 Ohms, however, manufacturer specifications should be checked.
OBDII Code P0748 Volvo - Pressure Control Solenoid 'A' Electrical - AutoCodes.com
P0748 Volvo Code - Pressure Control Solenoid 'A' Electrical

What are the Possible Causes of the DTC P0748 Volvo?

  • Faulty Transmission Fluid Pressure Solenoid
  • Transmission Fluid Pressure Solenoid harness is open or shorted
  • Transmission Fluid Pressure Solenoid circuit poor electrical connection

How to Fix the DTC P0748 Volvo?

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 P0748 Volvo 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 P0748 Volvo code?

Need more information on how to fix the P0748 Volvo code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0748 Volvo code diagnosed by a professional: Find a repair shop in your area

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 P0748 Volvo Code

1. What are the common symptoms of OBDII code P0748 in a Volvo related to the Pressure Control Solenoid 'A' Electrical issue?

The common symptoms include harsh shifting, transmission slippage, poor acceleration, and in some cases, the vehicle may go into limp mode.

2. What causes the OBDII code P0748 in a Volvo related to the Pressure Control Solenoid 'A' Electrical issue?

The code P0748 in a Volvo is usually triggered by a faulty pressure control solenoid 'A', damaged wiring or connectors, low transmission fluid levels, or a malfunctioning PCM.

3. How can I diagnose the Pressure Control Solenoid 'A' Electrical issue causing the OBDII code P0748 in my Volvo?

Diagnosing the issue involves checking the wiring and connectors for any damage, testing the resistance of the solenoid, inspecting the transmission fluid level and quality, and scanning the vehicle's computer for any additional fault codes.

4. Can I continue driving my Volvo with the OBDII code P0748 related to the Pressure Control Solenoid 'A' Electrical issue?

It is not recommended to continue driving your Volvo with this issue as it can lead to further damage to the transmission components. Get it checked and repaired as soon as possible.

5. How can I repair the Pressure Control Solenoid 'A' Electrical issue causing the OBDII code P0748 in my Volvo?

Repairing the issue may involve replacing the pressure control solenoid 'A', repairing any damaged wiring or connectors, topping up or replacing the transmission fluid, and clearing the fault code from the PCM.

6. Is it possible to reset the OBDII code P0748 in my Volvo related to the Pressure Control Solenoid 'A' Electrical issue without fixing the underlying problem?

Resetting the code without fixing the underlying issue will only temporarily clear the warning light. The problem will persist and may lead to further transmission issues if not addressed.

7. How much does it cost to repair the Pressure Control Solenoid 'A' Electrical issue causing the OBDII code P0748 in a Volvo?

The cost of repair can vary depending on the extent of the damage, the labor rates in your area, and whether you choose to replace the solenoid yourself or have it done by a professional mechanic. Expect costs to range from $200 to $600.

8. Can a DIY enthusiast replace the Pressure Control Solenoid 'A' in a Volvo to resolve the OBDII code P0748 issue?

Replacing the solenoid may require some mechanical knowledge and the right tools. If you are confident in your abilities, you can replace it yourself by following a repair manual or tutorial. Otherwise, it's best to seek professional help.

9. Are there any preventive measures to avoid the OBDII code P0748 related to the Pressure Control Solenoid 'A' Electrical issue in a Volvo?

Regularly checking and maintaining your transmission fluid levels, addressing any leaks promptly, and ensuring the electrical connections are secure can help prevent issues with the pressure control solenoid.

10. How long does it take to repair the Pressure Control Solenoid 'A' Electrical issue causing the OBDII code P0748 in a Volvo?

The repair time can vary depending on the accessibility of the solenoid in your specific Volvo model and the expertise of the mechanic. On average, the repair can take anywhere from 1 to 3 hours.

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