AutoCodes – Chrysler – U1400 Chrysler

U1400 Chrysler Code - Implausible TPS Signal Received

Quick Answer

The purpose of the diagnostic is to monitor the Controller Area Network (CAN) BUS, the transmitted messages on the CAN BUS and the validity of the CAN signals. Common causes include Check for Powertrain Control Module (PCM) codes, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted. 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: U1400 Chrysler indicates Implausible TPS Signal Received.
Common causes: Common causes include Check for Powertrain Control Module (PCM) codes, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted.
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 9,649

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1400 Chrysler Description

The purpose of the diagnostic is to monitor the Controller Area Network (CAN) BUS, the transmitted messages on the CAN BUS and the validity of the CAN signals. Several control units are connected to the CAN BUS which send their messages cyclically in a defined time window. The messages contain multiple signals representing vehicle information. The Diagnostic Trouble Code (DTC) sets when the Transmission Control Module (TCM) detects an incorrect CAN ID from the Powertrain Control Module (PCM).

OBDII Code U1400 Chrysler - Implausible TPS Signal Received - AutoCodes.com — U1400 Chrysler Code - Implausible TPS Signal Received

What does this mean?

What are the Possible Causes of the DTC U1400 Chrysler?

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

How to Fix the DTC U1400 Chrysler?

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 U1400 Chrysler 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.

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Need more information on how to fix the U1400 Chrysler code? Get Access to Factory Service Manuals

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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 U1400 Chrysler Code

1. What are common symptoms of the U1400 OBDII code in a Chrysler vehicle?

- Common symptoms include engine stalling, rough idling, decreased fuel efficiency, and issues with acceleration.

2. What can cause the U1400 OBDII code to appear in a Chrysler vehicle?

- The U1400 code typically indicates an implausible Throttle Position Sensor (TPS) signal, which may be caused by a faulty TPS, wiring issues, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the U1400 code in my Chrysler vehicle?

- Diagnosing the U1400 code usually involves using an OBDII scanner to retrieve the code, checking the TPS wiring and connections, testing the TPS voltage, and inspecting the ECM for any signs of damage.

4. Is it safe to continue driving with the U1400 code present in a Chrysler vehicle?

- It is not recommended to continue driving with the U1400 code, as it can lead to further damage to the vehicle and potentially unsafe driving conditions.

5. How can I repair the U1400 OBDII code in my Chrysler vehicle?

- Repairing the U1400 code may involve replacing the TPS sensor, repairing any damaged wiring, or reprogramming the ECM. It is recommended to consult a professional mechanic for proper diagnosis and repair.

6. Can a DIY enthusiast fix the U1400 code issue in a Chrysler vehicle?

- While some experienced DIY enthusiasts may be able to diagnose and repair the U1400 code, it is recommended to seek professional help due to the complexity of the system and the importance of proper diagnosis and repair.

7. What are the potential long-term effects of ignoring the U1400 code in a Chrysler vehicle?

- Ignoring the U1400 code can lead to decreased engine performance, increased fuel consumption, and potential damage to other engine components over time.

8. How much does it typically cost to repair the U1400 code in a Chrysler vehicle?

- The cost of repairing the U1400 code can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

9. Can weather conditions affect the appearance of the U1400 code in a Chrysler vehicle?

- Extreme weather conditions such as high humidity or temperature fluctuations can sometimes cause temporary issues with the TPS signal, leading to the appearance of the U1400 code.

10. How often should I check the TPS sensor in my Chrysler vehicle to prevent the U1400 code from appearing?

- It is recommended to have the TPS sensor checked during regular maintenance intervals or if you experience any symptoms of TPS-related issues to prevent the U1400 code from appearing.