U146D Jeep 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 Jeep 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.
Code U146D Jeep Description
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.
What are the Possible Causes of the DTC U146D Jeep?
- 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 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 U146D 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 U146D Jeep code?
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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.
Frequently Asked Questions about U146D Jeep Code
1. What does the OBDII code U146D mean on a Jeep?
The U146D code indicates "Implausible Data Received From Left B-Pillar Impact Acceleration Sensor," meaning the sensor is sending data that the vehicle’s control module considers invalid.
2. What are common symptoms of the U146D code on a Jeep?
Common symptoms include an illuminated airbag warning light, malfunctioning airbag system, or no noticeable symptoms depending on the severity of the fault.
3. What causes the U146D code to appear on a Jeep?
The code can be caused by a faulty left B-pillar impact acceleration sensor, wiring issues, poor electrical connections, or a malfunction in the airbag control module.
4. Can I drive my Jeep with the U146D code active?
Driving with this code is possible, but it’s not recommended because it may indicate a compromised airbag system, which could fail to deploy in an accident.
5. How do I diagnose the U146D code on my Jeep?
Diagnosing the code involves using an OBDII scanner to confirm the fault, inspecting the left B-pillar impact acceleration sensor, checking wiring and connections, and testing the airbag control module.
6. How can I fix the U146D code on my Jeep?
Repairs may include replacing the left B-pillar impact acceleration sensor, repairing or replacing damaged wiring, cleaning connectors, or reprogramming the airbag control module.
7. How much does it cost to repair the U146D code on a Jeep?
Repair costs can vary but typically range from $100 to $500, depending on whether the sensor or wiring needs replacement or if advanced diagnostics are required.
8. Can a U146D code be cleared without repairs?
You may be able to clear the code temporarily, but it will likely return unless the underlying issue is resolved.
9. Is the U146D code covered under warranty on my Jeep?
It depends on your Jeep’s warranty. Airbag-related components may be covered under a longer-term safety warranty, so check with your dealership.
10. What tools do I need to troubleshoot the U146D code?
You’ll need an OBDII scanner, a multimeter to check electrical connections, and possibly wiring diagrams for your Jeep model to locate the impacted sensor and circuits.
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