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Code P1769

Quick reference

P1769 at a glance

Plain-language meaning
The car's computer that controls the transmission got too hot and is now waking up after cooling down.
Urgency
Moderate – Addressing this issue promptly can prevent further damage to the transmission.
Difficulty
Moderate
System
Transmission Control Issue
Tools mentioned
OBD-II scanner, Multimeter, Transmission fluid tester

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

Laymans terms

The car's computer that controls the transmission got too hot and is now waking up after cooling down.

Explanation

This code indicates that the Transmission Control Module (TCM) experienced an over-temperature condition and has now returned to normal operation.

Technical description

The P1769 code is triggered when the TCM detects that its internal temperature exceeded a certain threshold, causing it to enter a protective 'hot mode'. Once the temperature returns to a safe level, the TCM resumes normal operations, but the code is stored to indicate the event.

Symptoms

• Transmission may shift erratically

• Check Engine Light is on

• Reduced transmission performance

Common Causes

• Overheating of the transmission

• Faulty TCM

• Poor cooling system performance

Glossary

TCM: Transmission Control Module

OBD-II: On-Board Diagnostics, Second Generation

Diagnosis steps

• Check for other related codes

• Inspect the transmission fluid level and condition

• Test the TCM for proper operation

Repair procedures

• Replace or repair the TCM if faulty

• Flush and replace transmission fluid

• Ensure cooling system is functioning properly

Tools required

• OBD-II scanner

• Multimeter

• Transmission fluid tester

Estimated repair cost

$200 - $1000

Difficulty level

Moderate

Commonly affected vehicles

• Chrysler 300

• Dodge Charger

• Jeep Grand Cherokee

Preventive measures

• Regularly check transmission fluid levels

• Ensure cooling system maintenance

• Avoid excessive towing or heavy loads

Error code type

Transmission Control Issue

User experience recommendations

• Avoid driving aggressively until the issue is resolved

• Consult a professional mechanic for a thorough inspection

Warranty information

Check vehicle warranty for coverage on transmission components

Historical data

This code has been associated with overheating issues in certain vehicle models, especially those with high mileage or inadequate maintenance.

Urgency level

Moderate – Addressing this issue promptly can prevent further damage to the transmission.

Testing conditions

• Engine at operating temperature

• Vehicle in drive mode

Component location

The TCM is usually located near the transmission or in the engine bay.

FAQs

Q: Can I drive with a P1769 code?
A: It's not recommended to drive for long periods with this code as it may lead to transmission damage.

Q: How can I prevent P1769 from occurring?
A: Regular maintenance of the transmission and cooling system can help prevent this issue.

Optional diagnostic gear

Tools that may help diagnose P1769

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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