AutoCodes – Mercury – P1745 Mercury

P1745 Mercury Code - Line Pressure Too High For Too Long

Quick Answer

The P1745 code is an informational code to inform the technician that transmission has been operating in an open-loop line pressure control for 3220 kilometers (2000 miles) or 1000 2-3 upshifts resulting from a Line Pressure Diagnostic Trouble Code (DTC). Common causes include Faulty Line Pressure Solenoid, Line Pressure Solenoid harness is open or shorted, Line 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: P1745 Mercury indicates Line Pressure Too High For Too Long.
Common causes: Common causes include Faulty Line Pressure Solenoid, Line Pressure Solenoid harness is open or shorted, Line 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 492

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 Jul 18, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1745 Mercury Description

The P1745 code is an informational code to inform the technician that transmission has been operating in an open-loop line pressure control for 3220 kilometers (2000 miles) or 1000 2-3 upshifts resulting from a Line Pressure Diagnostic Trouble Code (DTC). The Transmission is not designed to operate in open-loop line pressure control for an extended period of time. This code is intended to protect the transmission. If the P1745 code sets, the transmission controller will place the transmission into limp-in mode.

OBDII Code P1745 Mercury - Line Pressure Too High For Too Long - AutoCodes.com — P1745 Mercury Code - Line Pressure Too High For Too Long

What does this mean?

What are the Possible Causes of the DTC P1745 Mercury?

Faulty Line Pressure Solenoid
Line Pressure Solenoid harness is open or shorted
Line Pressure Solenoid circuit poor electrical connection

How to Fix the DTC P1745 Mercury?

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 P1745 Mercury 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 P1745 Mercury Code

1. What are common symptoms of OBDII code P1745 in a Mercury vehicle?

- Common symptoms include harsh shifting, transmission slipping, delayed engagement, and potential transmission overheating.

2. What can cause the OBDII code P1745 "Line Pressure Too High For Too Long" in a Mercury?

- Possible causes include a faulty transmission pressure control solenoid, a malfunctioning transmission pump, low transmission fluid levels, or a clogged transmission filter.

3. How serious is the OBDII code P1745 in a Mercury?

- This code indicates a problem with the transmission fluid pressure, which can lead to further damage if left unaddressed. It is important to diagnose and repair the issue promptly.

4. Can driving with the OBDII code P1745 in a Mercury cause further damage?

- Yes, driving with this code present can potentially cause damage to the transmission components due to the increased pressure and improper fluid circulation.

5. How can I diagnose the OBDII code P1745 in my Mercury?

- Diagnosis typically involves checking the transmission fluid level and condition, conducting a pressure test, and using a scan tool to monitor transmission data for abnormalities.

6. What are some repair tips for fixing the OBDII code P1745 in a Mercury?

- Repair tips may include replacing the transmission pressure control solenoid, inspecting and possibly replacing the transmission pump, ensuring proper fluid levels, and servicing the transmission system.

7. Is it recommended to reset the OBDII code P1745 in a Mercury after making repairs?

- Yes, after addressing the underlying issue causing the code, it is advisable to clear the code using a scan tool to reset the vehicle's onboard computer system.

8. Can I fix the OBDII code P1745 in a Mercury on my own, or should I seek professional help?

- While some DIY enthusiasts may attempt to address this code, it is recommended to seek the expertise of a qualified mechanic or technician for accurate diagnosis and repair.

9. How much does it typically cost to repair the OBDII code P1745 in a Mercury?

- The cost of repair can vary depending on the specific cause of the code and the extent of the damage. It is advisable to obtain estimates from different repair shops.

10. Are there any preventive measures to avoid the OBDII code P1745 in a Mercury?

- Regular maintenance of the transmission system, including fluid changes at recommended intervals, can help prevent issues that may trigger this code.