AutoCodes – Hyundai – P0745 Hyundai

P0745 Hyundai 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 Hyundai 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 22,857

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 Jan 29, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0745 Hyundai 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 Hyundai - Pressure Control Solenoid Valve 'A' - AutoCodes.com — P0745 Hyundai Code - Pressure Control Solenoid Valve 'A'

What does this mean?

What are the Possible Causes of the DTC P0745 Hyundai?

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 Hyundai?

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 Hyundai 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 Hyundai Code

1. What are the common symptoms of OBDII code P0745 in a Hyundai related to the Pressure Control Solenoid Valve 'A'?

The common symptoms include harsh shifting, transmission slippage, decreased fuel efficiency, and in some cases, the transmission may fail to engage.

2. What are the possible causes of OBDII code P0745 in a Hyundai?

The code P0745 typically indicates a problem with the Pressure Control Solenoid Valve 'A'. Common causes include a faulty solenoid valve, low transmission fluid level, dirty transmission fluid, or a wiring issue.

3. How can I diagnose the Pressure Control Solenoid Valve 'A' issue causing OBDII code P0745 in my Hyundai?

Diagnosis involves performing a visual inspection of the solenoid valve and its wiring, checking the transmission fluid level and condition, and using a scan tool to monitor the solenoid's performance.

4. Can I continue driving my Hyundai with OBDII code P0745 present?

It is not recommended to continue driving with code P0745 present, as it can lead to further damage to the transmission. It's best to address the issue promptly to prevent more severe problems.

5. Is it possible to repair the Pressure Control Solenoid Valve 'A' issue causing OBDII code P0745 in a Hyundai myself?

While some DIY enthusiasts may attempt to replace the solenoid valve themselves, it is recommended to have a professional mechanic diagnose and repair the issue to ensure proper installation and functioning.

6. How much does it typically cost to repair OBDII code P0745 related to the Pressure Control Solenoid Valve 'A' in a Hyundai?

The cost of repairing code P0745 can vary depending on the root cause of the issue and labor rates in your area. It's best to get a few quotes from reputable repair shops to compare prices.

7. Can a clogged transmission filter cause OBDII code P0745 to appear in a Hyundai?

Yes, a clogged transmission filter can impede the flow of transmission fluid and lead to pressure control issues, potentially triggering code P0745 related to the Pressure Control Solenoid Valve 'A'.

8. Are there any preventive measures to avoid OBDII code P0745 in a Hyundai?

Regular maintenance, such as changing the transmission fluid and filter at recommended intervals, can help prevent issues with the Pressure Control Solenoid Valve 'A' and reduce the likelihood of code P0745 appearing.

9. Will resetting the OBDII system clear code P0745 from a Hyundai's system?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the Pressure Control Solenoid Valve 'A' is not addressed, the code is likely to reappear after some driving cycles.

10. Can a faulty transmission control module (TCM) trigger OBDII code P0745 in a Hyundai?

Yes, a malfunctioning TCM can send incorrect signals to the Pressure Control Solenoid Valve 'A', leading to pressure control issues and the appearance of code P0745 in the system.