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Code P1724

Quick reference

P1724 at a glance

Plain-language meaning
This code means that the computer inside your car that controls the transmission is having trouble counting properly. It's like when you're trying to count to 10, but you keep skipping a number.
Urgency
High – This issue can affect vehicle drivability and should be addressed promptly.
Difficulty
Moderate
System
Transmission Control Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

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

Laymans terms

This code means that the computer inside your car that controls the transmission is having trouble counting properly. It's like when you're trying to count to 10, but you keep skipping a number.

Explanation

The Transmission Control Module (TCM) has detected an error in the AliveCounter, which is a mechanism used to ensure the TCM is functioning correctly.

Technical description

The P1724 code indicates that the Transmission Control Module (TCM) has identified a fault with the TPU (Time Processing Unit) AliveCounter. This counter is used to monitor the TCM's operation and ensure that it is processing signals correctly. An error in this counter suggests a possible malfunction in the TCM's internal processes.

Symptoms

• Check Engine Light is on

• Transmission may not shift properly

• Vehicle may enter limp mode

Common Causes

• Faulty Transmission Control Module (TCM)

• Software glitch in the TCM

• Electrical issues such as poor connections or damaged wiring

Glossary

Transmission Control Module (TCM): A computer that controls the transmission system in a vehicle.

AliveCounter: A mechanism within the TCM that ensures it is functioning correctly by counting operations.

Diagnosis steps

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

• Inspect the TCM and its connections for any visible damage.

• Check for updates or recalls related to the TCM software.

Repair procedures

• Reprogram or update the TCM software.

• Repair or replace damaged wiring or connectors.

• Replace the Transmission Control Module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$200 - $1000

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly update vehicle software.

• Ensure all electrical connections are secure.

• Perform routine maintenance checks.

Error code type

Transmission Control Issue

User experience recommendations

• Avoid driving the vehicle until repairs are made to prevent further damage.

• Consult with a professional mechanic for an accurate diagnosis.

Warranty information

Check with your vehicle manufacturer for warranty coverage on the TCM.

Historical data

This code has been reported in vehicles with aging TCMs or those with known software issues.

Urgency level

High – This issue can affect vehicle drivability and should be addressed promptly.

Testing conditions

• Vehicle should be at operating temperature.

• Transmission should be in a driveable state.

Component location

The Transmission Control Module is typically located near the transmission or under the vehicle's dashboard.

FAQs

Q: Can I drive with a P1724 code?
A: It's not recommended to drive with this code as it can affect your vehicle's ability to shift gears properly.

Q: How can I reset the TCM?
A: Disconnecting the battery for a few minutes can reset the TCM, but this is a temporary fix and the issue should be properly diagnosed.

Optional diagnostic gear

Tools that may help diagnose P1724

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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