AutoCodes – Toyota – P0748 2006 Toyota Camry

P0748 2006 Toyota Camry Code - Pressure Control Solenoid 'A' Electrical Shift Solenoid Valve SL1

Quick Answer

The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Dirty transmission fluid, Low transmission fluid level, Shift Solenoid Valve SL1. 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 2006 Toyota Camry indicates Pressure Control Solenoid 'A' Electrical Shift Solenoid Valve SL1.
Common causes: Common causes include Dirty transmission fluid, Low transmission fluid level, Shift Solenoid Valve SL1.
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 7,251

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 28, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0748 2006 Toyota Camry Description

The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the PC solenoid valve, which ultimately decreases line pressure. The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM).

OBDII Code P0748 2006 Toyota Camry - Pressure Control Solenoid 'A' Electrical Shift Solenoid Valve SL1 - AutoCodes.com — P0748 2006 Toyota Camry Code - Pressure Control Solenoid 'A' Electrical Shift Solenoid Valve SL1

What does this mean?

What are the Possible Causes of the DTC P0748 2006 Toyota Camry?

Dirty transmission fluid
Low transmission fluid level
Shift Solenoid Valve SL1
Shift Solenoid Valve SL1 harness is open or shorted
Shift Solenoid Valve SL1 circuit poor electrical connection
ECM

How to Fix the DTC P0748 2006 Toyota Camry?

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 does this mean?

Code Tech Notes

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0748 2006 Toyota Camry 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.

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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.

Frequently Asked Questions about P0748 2006 Toyota Camry Code

1. What does the OBDII code P0748 mean on a 2006 Toyota Camry?

P0748 indicates an issue with the Pressure Control Solenoid 'A' (Shift Solenoid Valve SL1) in the transmission, specifically an electrical problem such as a circuit fault.

2. What are the common symptoms of the P0748 code in a 2006 Toyota Camry?

Symptoms may include harsh or erratic shifting, transmission slipping, poor acceleration, reduced fuel efficiency, or the transmission being stuck in a single gear.

3. What causes the P0748 code to appear on a 2006 Toyota Camry?

Common causes include a faulty pressure control solenoid 'A', damaged or corroded wiring or connectors, a defective transmission control module (TCM), or low or dirty transmission fluid.

4. How do I diagnose the P0748 code in my 2006 Toyota Camry?

Start by checking the transmission fluid level and condition, inspecting the solenoid wiring and connectors for damage, and using a multimeter to test the solenoid circuit for continuity or resistance.

5. Can I drive my 2006 Toyota Camry with the P0748 code?

Driving with this code is not recommended, as it can lead to transmission damage, poor performance, and unsafe driving conditions due to improper shifting.

6. How is the P0748 code fixed on a 2006 Toyota Camry?

Repairs may involve replacing the pressure control solenoid 'A', repairing damaged wiring or connectors, flushing and refilling the transmission fluid, or reprogramming or replacing the TCM if necessary.

7. How much does it cost to repair the P0748 code on a 2006 Toyota Camry?

Repair costs can vary but typically range from $200 to $500 for solenoid replacement, with additional costs for diagnosing wiring issues or replacing the TCM.

8. What tools are needed to fix the P0748 code on a 2006 Toyota Camry?

You may need a multimeter, an OBDII scanner, basic hand tools, and possibly a transmission fluid flush kit, depending on the repair.

9. Can low transmission fluid cause the P0748 code in a 2006 Toyota Camry?

Yes, low or dirty transmission fluid can cause improper solenoid operation, leading to the P0748 code.

10. How can I prevent the P0748 code from returning on my 2006 Toyota Camry?

Regularly check and maintain the transmission fluid, inspect wiring and connectors for damage, and address transmission issues promptly to prevent recurrence.