AutoCodes – Chrysler – U142A Chrysler

U142A Chrysler Code - Implausible PRNDL Signal Received

Quick Answer

There are two qualifying states that the Occupant Restraint Control (ORC) Module uses to modify a Active Headrest (AHR) deployment. Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted, Powertrain Control Module (PCM) 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: U142A Chrysler indicates Implausible PRNDL Signal Received.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted, Powertrain Control Module (PCM) 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 558

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 U142A Chrysler Description

There are two qualifying states that the Occupant Restraint Control (ORC) Module uses to modify a Active Headrest (AHR) deployment. One is the PRNDL state signal over the CAN C Bus network. The other is the actual transmission gear state. The ORC utilizes multiple vehicle data bus network communication to support modification of the AHR when it is established the gear state is reverse. The PRNDL data (status and reverse gear state) shall be stored in the Event Data Recorder (EDR). This Diagnostic Trouble Code (DTC) will set disabling AHR activation only for the amount of time the transmission position indicates a reverse state. The supply voltage is 9 to 16 volts. Airbag warning light (AWL) will be illuminated due to no PRNDL message DTC. The PRNDL message is required by the ORC to disable the active headrests when in reverse. An active fault takes 6 seconds to set and indicates the message is not being received by the ORC. Receiving 2 valid PRNDL state and Reverse gear messages will change the fault to Stored. The AWL shall be on for a minimum of 12 seconds.

OBDII Code U142A Chrysler - Implausible PRNDL Signal Received - AutoCodes.com — U142A Chrysler Code - Implausible PRNDL Signal Received

What does this mean?

What are the Possible Causes of the DTC U142A Chrysler?

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

How to Fix the DTC U142A 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 U142A 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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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 U142A Chrysler Code

1. What are the common symptoms of OBDII code U142A Chrysler?

The common symptoms of OBDII code U142A Chrysler include issues with shifting gears, the transmission not engaging properly, and the dashboard displaying incorrect gear information.

2. What are the possible causes of the U142A code?

The U142A code, indicating an Implausible PRNDL Signal Received, can be caused by faulty transmission position sensors, wiring issues, software glitches, or a malfunctioning transmission control module.

3. How can I diagnose the U142A code on my Chrysler vehicle?

Diagnosing the U142A code usually involves using an OBDII scanner to retrieve the code, checking the transmission position sensors for proper operation, inspecting the wiring for any damage, and performing a thorough visual inspection of related components.

4. Can I continue driving my Chrysler with the U142A code present?

It is not recommended to continue driving your Chrysler with the U142A code present, as it can lead to further damage to the transmission or other related components. It is best to address the issue promptly.

5. How can I repair the U142A code on my Chrysler?

Repairing the U142A code typically involves replacing faulty transmission position sensors, repairing damaged wiring, updating software if necessary, or replacing the transmission control module in more severe cases.

6. Are there any DIY tips for fixing the U142A code?

While some basic troubleshooting steps can be done by DIY enthusiasts, fixing the U142A code often requires specialized tools and knowledge. It is recommended to consult a professional mechanic for proper diagnosis and repair.

7. How much does it cost to fix the U142A code on a Chrysler?

The cost of fixing the U142A code on a Chrysler can vary depending on the underlying issue, parts required for repair, and labor costs. It is advisable to get a few quotes from different mechanics to compare prices.

8. Can a faulty battery or alternator trigger the U142A code?

While a faulty battery or alternator can cause electrical issues in a vehicle, they are not typically direct triggers for the U142A code. However, it is essential to ensure that the electrical system is in good working condition to prevent related problems.

9. Is the U142A code specific to Chrysler vehicles only?

The U142A code related to an Implausible PRNDL Signal Received is commonly found in Chrysler vehicles, but similar codes may exist for other car manufacturers with their unique definitions. It is essential to check the specific code definitions for each vehicle model.

10. Can a software update fix the U142A code issue?

In some cases, a software update provided by Chrysler may address the U142A code issue, especially if it is related to a known software glitch. It is advisable to consult a Chrysler dealership or authorized service center for guidance on software updates.