AutoCodes – Chrysler – U146D Chrysler

U146D Chrysler Code - Implausible Data Received From Left B-Pillar Impact Acceleration Sensor

Quick Answer

Six side impact sensors are used on vehicles equipped with side curtain airbags, three on each side of the vehicle. Common causes include Faulty Left Side Impact Pressure Sensor 1, Left Side Impact Pressure Sensor 1 harness is open or shorted, Left Side Impact Pressure Sensor 1 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: U146D Chrysler indicates Implausible Data Received From Left B-Pillar Impact Acceleration Sensor.
Common causes: Common causes include Faulty Left Side Impact Pressure Sensor 1, Left Side Impact Pressure Sensor 1 harness is open or shorted, Left Side Impact Pressure Sensor 1 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 551

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 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U146D Chrysler Description

Six side impact sensors are used on vehicles equipped with side curtain airbags, three on each side of the vehicle. One acceleration-type sensor is located behind the B-pillar trim near the base of each B-pillar, and one acceleration-type sensor is located behind the quarter panel trim near the base of each C-pillar. One pressure-type sensor is located on each front poor hardware carrier panel, concealed behind each front door inside the trim panel. The Left Side Impact Sensor 1 is mounted to the passenger rear door opening. The impact sensors perform their own self-test using power supplied by the Occupant Restraint Controller (ORC) then communicate this status back to the ORC with periodic updates. The repair of this fault condition involves verifying the integrity of the wiring between the ORC and the sensor.
This code will set, if the ORC and the Left Side Impact Sensor 1 do not establish and maintain valid data communications. The Diagnostic Trouble Code (DTC) will become active after the fault has set for a minimum of 2.5 seconds. The DTC will go to Stored after the ORC to Left Side Impact Sensor 1 communication fault has been removed or the suspect sensor has been replaced for 2.5 seconds. The Airbag Warning Lamp (AWL) will set in the instrument cluster.

OBDII Code U146D Chrysler - Implausible Data Received From Left B-Pillar Impact Acceleration Sensor - AutoCodes.com — U146D Chrysler Code - Implausible Data Received From Left B-Pillar Impact Acceleration Sensor

What does this mean?

What are the Possible Causes of the DTC U146D Chrysler?

Faulty Left Side Impact Pressure Sensor 1
Left Side Impact Pressure Sensor 1 harness is open or shorted
Left Side Impact Pressure Sensor 1 circuit poor electrical connection
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC U146D 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 U146D 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.

Need more information about the U146D Chrysler code?

Need more information on how to fix the U146D Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U146D Chrysler code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 U146D Chrysler Code

1. What are the common symptoms of OBDII code U146D in a Chrysler vehicle?

- Common symptoms include the illumination of the Check Engine Light, airbag warning light, and potential issues with the vehicle's airbag system.

2. What does the OBDII code U146D Chrysler mean?

- The code U146D indicates that the vehicle's onboard diagnostic system has detected implausible data from the left B-pillar impact acceleration sensor.

3. What are the possible causes of code U146D in a Chrysler vehicle?

- Possible causes include a faulty left B-pillar impact acceleration sensor, wiring issues, loose connections, or a malfunction in the airbag control module.

4. How can I diagnose the U146D code in my Chrysler?

- Diagnosing the U146D code typically involves checking the left B-pillar impact sensor for proper connection, wiring integrity, and sensor functionality using a diagnostic scanner.

5. Can I continue driving my Chrysler with the U146D code?

- It is not recommended to drive the vehicle with the U146D code present, as it may indicate potential issues with the airbag system, compromising safety in the event of an accident.

6. How can I repair the U146D code in my Chrysler?

- Repair options may include checking and repairing wiring connections, replacing the left B-pillar impact acceleration sensor, or addressing any issues with the airbag control module.

7. Is it safe to reset the U146D code without addressing the underlying issue?

- It is not advisable to simply reset the code without addressing the root cause, as the problem may persist and compromise the proper functioning of the airbag system.

8. Will the U146D code affect the overall performance of my Chrysler vehicle?

- While the U146D code may not directly impact the vehicle's performance, it signifies a potential safety issue with the airbag system that should be addressed promptly.

9. Can a DIY enthusiast fix the U146D code issue in a Chrysler?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address simple causes such as wiring issues, but complex repairs may require professional assistance.

10. How can I prevent the U146D code from recurring in my Chrysler?

- Regular maintenance checks, ensuring proper wiring connections, and addressing any issues promptly can help prevent the U146D code from recurring in your Chrysler vehicle.