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P0745 KIA Code - Pressure Control Solenoid Valve 'A'

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 Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid valve. 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
P0745 KIA indicates Pressure Control Solenoid Valve 'A'.
Common causes
Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty line pressure solenoid valve.
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 15,956
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Jan 29, 2019
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Code P0745 KIA 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 P0745 KIA - Pressure Control Solenoid Valve 'A' - AutoCodes.com
P0745 KIA Code - Pressure Control Solenoid Valve 'A'
What does this mean?

What are the Possible Causes of the DTC P0745 KIA?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty line pressure solenoid valve
  • Line pressure solenoid valve harness is open or shorted
  • Line pressure solenoid valve circuit poor electrical connection

How to Fix the DTC P0745 KIA?

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 P0745 KIA 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 P0745 KIA Code

1. What does the OBDII code P0745 mean on a Kia vehicle?

Code P0745 indicates an issue with the Pressure Control Solenoid Valve 'A' in the transmission, which regulates hydraulic pressure for smooth shifting.

2. What are common symptoms of code P0745 in a Kia?

Symptoms may include harsh or delayed shifting, transmission slipping, poor acceleration, or the transmission staying in one gear.

3. What causes code P0745 in a Kia?

Common causes include a faulty pressure control solenoid, transmission fluid contamination, wiring issues, or a malfunctioning transmission control module (TCM).

4. Can driving with code P0745 damage my Kia's transmission?

Yes, prolonged driving with this code can cause further damage to the transmission and lead to costly repairs.

5. How can I diagnose code P0745 in my Kia?

Check the transmission fluid level and condition, inspect the wiring and connectors to the solenoid, and use a diagnostic tool to test the solenoid’s operation.

6. How do I fix code P0745 in a Kia?

Repairs may involve replacing the pressure control solenoid, flushing the transmission fluid, repairing wiring, or updating/replacing the transmission control module.

7. Is replacing the transmission fluid necessary for code P0745?

If the fluid is contaminated or degraded, replacing it may resolve the issue or prevent further damage.

8. How much does it cost to repair code P0745 on a Kia?

Repair costs vary but may range from $150 for solenoid replacement to over $1,000 for more complex transmission repairs.

9. Can a faulty TCM cause code P0745 in a Kia?

Yes, a malfunctioning Transmission Control Module can fail to properly regulate the solenoid, triggering this code.

10. Will resetting the code fix the P0745 issue in my Kia?

Resetting the code may clear it temporarily, but the underlying issue must be addressed to prevent recurrence and further damage.

Discuss the causes and fixes for P0745 KIA OBDII Code

Submit a New Comment

  • Hello , I have the the code P0745 on my 2009 kia rio specially when it's too cold
    the fluid is very clean and no smell ,
    Do you thing that I should change the valve ?
    The car has 124000 km only
    Thanks

    Reply to Comment

  • If the transmission fluid and filter are clean, then you must replace the solenoid to fix the problem.

    Reply to Comment
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