AutoCodes – Jeep – U1426 Jeep

U1426 Jeep Code - Implausible TCC Slip Request Signal Received

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Transmission Control Module (TCM) receives an implausible Torque Converter Clutch (TCC) slip request Electronically-Modulated Converter Clutch (EMCC) from the Powertrain Control Module (PCM). Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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: U1426 Jeep indicates Implausible TCC Slip Request Signal Received.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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 664

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1426 Jeep Description

OBDII Code U1426 Jeep - Implausible TCC Slip Request Signal Received - AutoCodes.com — U1426 Jeep Code - Implausible TCC Slip Request Signal Received

What does this mean?

What are the Possible Causes of the DTC U1426 Jeep?

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

How to Fix the DTC U1426 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 U1426 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 U1426 Jeep 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 U1426 Jeep Code

1. What are the common symptoms of OBDII code U1426 in a Jeep?

- Common symptoms include erratic shifting, harsh transmission engagement, and potential stalling of the vehicle.

2. What does the OBDII code U1426 "Implausible TCC Slip Request Signal Received" in a Jeep mean?

- This code indicates that the Transmission Control Module (TCM) has detected an implausible signal related to the Torque Converter Clutch (TCC) slip request.

3. What are some possible causes of the U1426 OBDII code in a Jeep?

- Possible causes include faulty TCC solenoid, damaged wiring or connectors, TCM software issues, or a malfunctioning TCC system.

4. How can I diagnose the U1426 code in my Jeep?

- Diagnosing this code typically involves inspecting the TCC solenoid, checking the wiring and connectors for damage, and using a scan tool to analyze TCM data.

5. Can I continue driving my Jeep with the U1426 code present?

- It is not recommended to continue driving with this code as it can lead to further transmission issues and potential damage if left unresolved.

6. How can I repair the U1426 code in my Jeep?

- Repair options may include replacing the TCC solenoid, repairing damaged wiring or connectors, updating TCM software, or addressing any other identified issues with the TCC system.

7. Will resetting the fault codes make the U1426 code disappear temporarily?

- Resetting the fault codes may temporarily clear the code, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. Is it possible to prevent the U1426 code from appearing in my Jeep?

- Regular maintenance, such as checking and servicing the transmission components, can help prevent issues that may trigger the U1426 code.

9. Can a DIY enthusiast fix the U1426 code in a Jeep, or is professional help recommended?

- While some may attempt to diagnose and repair the U1426 code themselves, it is often recommended to seek professional help, especially for complex transmission issues.

10. How much should I expect to pay to repair the U1426 code in my Jeep?

- Repair costs for the U1426 code can vary depending on the exact cause of the issue, but it's advisable to budget for potential TCC solenoid replacement or wiring repairs.