AutoCodes – Jeep – U1460 Jeep

U1460 Jeep Code - Engine Idle Speed Message Rationality

Quick Answer

This diagnostic checks the availability and rationality of the Engine Idle Speed signal which is sent by the Engine Control Module (ECM) via a Controller Area Network (CAN) message. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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: U1460 Jeep indicates Engine Idle Speed Message Rationality.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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 1,063

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1460 Jeep Description

This diagnostic checks the availability and rationality of the Engine Idle Speed signal which is sent by the Engine Control Module (ECM) via a Controller Area Network (CAN) message. The diagnostic determines the availability by checking the received value is not equal to the Signal Not Available (SNA) default value. Then the diagnostic checks the rationality by confirming the signal value is within the range defined by a lower and upper threshold. When the CAN signal value is below a calibratable lower threshold or it exceeds a calibratable upper threshold or the signal is not available, the Powertrain Control Module (PCM) sends a Signal Not Available (SNA) default value to the PCM. When the PCM reads one of these conditions then the Diagnostic Trouble Code (DTC) U1460 is set.

OBDII Code U1460 Jeep - Engine Idle Speed Message Rationality - AutoCodes.com — U1460 Jeep Code - Engine Idle Speed Message Rationality

What does this mean?

What are the Possible Causes of the DTC U1460 Jeep?

Faulty Transmission Control Module (TCM)
Transmission Control Module (TCM) harness is open or shorted
Transmission Control Module (TCM) circuit poor electrical connection

How to Fix the DTC U1460 Jeep?

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 U1460 Jeep 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.

Need more information about the U1460 Jeep code?

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Need Help with the Code?

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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 U1460 Jeep Code

What does the OBDII code U1460 indicate in a Jeep?

The OBDII code U1460 indicates an issue with the Engine Idle Speed Message Rationality, meaning there is a problem with the communication between the engine control module and other modules related to idle speed control.

What are some common symptoms of the U1460 code?

Common symptoms include erratic idle speed, stalling, poor acceleration, and possible illumination of the check engine light.

What causes the U1460 code to trigger?

Causes can include faulty wiring or connectors, issues with the throttle body, a malfunctioning engine control module (ECM), or problems with the idle air control valve.

Can I drive my Jeep with the U1460 code?

While it might be possible to drive your Jeep, it is not recommended, as the vehicle may experience poor performance, stalling, or other driveability issues.

How can I diagnose the U1460 code?

To diagnose the U1460 code, use an OBDII scanner to confirm the code and check for any related codes. Inspect wiring and connectors for damage, test the throttle body and idle air control valve, and monitor live data for irregularities.

What repairs might be necessary for the U1460 code?

Repairs may include fixing or replacing damaged wiring or connectors, cleaning or replacing the throttle body, replacing the idle air control valve, or reprogramming or replacing the ECM.

How can I prevent the U1460 code from returning?

Regular maintenance of the throttle body and idle air control system, as well as ensuring all electrical connections are secure and free of corrosion, can help prevent the U1460 code from recurring.

Is it safe to clear the U1460 code without repairs?

Clearing the U1460 code without addressing the underlying issue is not advisable, as it may lead to recurring problems and unsafe driving conditions.

What should I do if the U1460 code keeps coming back?

If the code keeps returning, itâ€™s best to consult a professional mechanic who can perform a thorough diagnosis and repair the underlying issue causing the code.