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Code P1745

Quick reference

P1745 at a glance

Plain-language meaning
This code means that there's a problem with a part in the car's transmission that helps control the pressure of the fluid. It's like if a water hose had a kink and wasn't letting water flow properly.
Urgency
High – Addressing this issue promptly can prevent further transmission damage.
Difficulty
Moderate
System
Transmission Performance
Tools mentioned
OBD-II scanner, Multimeter, Wrench set

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that there's a problem with a part in the car's transmission that helps control the pressure of the fluid. It's like if a water hose had a kink and wasn't letting water flow properly.

Explanation

The P1745 code indicates an issue with the pressure control solenoid 'E' in the transmission, which is responsible for regulating hydraulic pressure.

Technical description

The pressure control solenoid 'E' is part of the transmission system and helps manage the hydraulic pressure used to engage the gears. If this solenoid fails or malfunctions, it can lead to improper gear shifts and transmission performance issues.

Symptoms

• Harsh or erratic shifting

• Transmission slipping

• Check engine light is on

Common Causes

• Faulty pressure control solenoid 'E'

• Transmission fluid is dirty or low

• Wiring issues or poor connections in the solenoid circuit

Glossary

Solenoid: An electromechanical device that controls fluid flow in the transmission.

Hydraulic Pressure: The pressure of fluid in the transmission system used to engage gears.

Diagnosis steps

• Use an OBD-II scanner to confirm the code

• Check transmission fluid level and condition

• Inspect wiring and connections to the solenoid

Repair procedures

• Replace the faulty pressure control solenoid 'E'

• Change the transmission fluid and filter

• Repair or replace damaged wiring or connectors

Tools required

• OBD-II scanner

• Multimeter

• Wrench set

Estimated repair cost

$200 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Dodge Ram 1500

• Chevrolet Silverado

Preventive measures

• Regularly check and change transmission fluid

• Inspect wiring and connectors periodically

• Avoid aggressive driving habits

Error code type

Transmission Performance

User experience recommendations

• Avoid driving the vehicle until repaired to prevent further damage.

• Consult with a professional mechanic for accurate diagnosis.

Warranty information

Check if your vehicle's transmission is still under warranty, as repairs might be covered.

Historical data

This code has been commonly reported in vehicles with higher mileage or those that have not had regular transmission maintenance.

Urgency level

High – Addressing this issue promptly can prevent further transmission damage.

Testing conditions

• Vehicle at operating temperature

• Transmission in drive mode

Component location

The pressure control solenoid 'E' is located inside the transmission, typically accessible by removing the transmission pan.

FAQs

Q: Can I drive with a P1745 code?
A: It's not recommended to drive with this code as it can lead to further transmission damage.

Q: How can I prevent a P1745 code?
A: Regular transmission maintenance, including fluid changes, can help prevent this issue.

Optional diagnostic gear

Tools that may help diagnose P1745

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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