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Code P2755

Quick reference

P2755 at a glance

Plain-language meaning
This code means that the car's computer thinks there's a problem with the system that helps keep the transmission fluid cool. It's like the car's brain is saying the cooler isn't working right.
Urgency
Moderate – Should be addressed soon to avoid transmission damage.
Difficulty
Moderate
System
Sensor Issue
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 the car's computer thinks there's a problem with the system that helps keep the transmission fluid cool. It's like the car's brain is saying the cooler isn't working right.

Explanation

The P2755 code indicates that the transmission fluid cooler control circuit is sending a high voltage signal to the vehicle's computer, which is outside the normal range.

Technical description

The Transmission Fluid Cooler Control Circuit is responsible for managing the temperature of the transmission fluid by controlling the cooler. A high signal in this circuit suggests an issue such as a short circuit, faulty wiring, or a defective control module.

Symptoms

• Check Engine Light is on

• Transmission overheating

• Poor fuel economy

Common Causes

• Faulty transmission fluid cooler control solenoid

• Short circuit in the wiring

• Defective transmission control module

Glossary

Transmission: A system in a vehicle that transmits power from the engine to the wheels.

Solenoid: An electromechanical device used to control the flow of fluid.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage.

• Test the transmission fluid cooler control solenoid for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the transmission fluid cooler control solenoid.

• Reprogram or replace the transmission control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Wrench set

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford F-150

Preventive measures

• Regular maintenance of the transmission system

• Check and replace transmission fluid as needed

• Inspect wiring and connectors periodically

Error code type

Sensor Issue

User experience recommendations

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

• Consult with a professional mechanic for accurate diagnosis.

Warranty information

Check vehicle warranty for coverage on transmission components.

Historical data

This code has been associated with vehicles that have had issues with transmission cooling systems, often due to poor maintenance or faulty components.

Urgency level

Moderate – Should be addressed soon to avoid transmission damage.

Testing conditions

• Vehicle at operating temperature

• Transmission in gear

Component location

The transmission fluid cooler is typically located near the front of the vehicle, often integrated with the radiator.

FAQs

Q: Can I drive with a P2755 code?
A: It's not recommended to drive with this code as it can lead to transmission overheating and damage.

Q: How do I reset the P2755 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.

Optional diagnostic gear

Tools that may help diagnose P2755

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.

View on Amazon
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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