AutoCodes – Fiat – U0173 Fiat

U0173 Fiat Code - Lost Communication With Left Side Satellite Acceleration Sensor 2

Quick Answer

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. Common causes include Faulty Left Side Impact Sensor 2, Left Side Impact Sensor 2 harness is open or shorted, Left Side Impact Sensor 2 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: U0173 Fiat indicates Lost Communication With Left Side Satellite Acceleration Sensor 2.
Common causes: Common causes include Faulty Left Side Impact Sensor 2, Left Side Impact Sensor 2 harness is open or shorted, Left Side Impact Sensor 2 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 560

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 Apr 03, 2020

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code U0173 Fiat Description

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 Diagnostic Trouble Code (DTC) sets when the ORC no longer receives the notification of the status update from the side impact sensor. Once set, this DTC is latched for the entire ignition cycle.

OBDII Code U0173 Fiat - Lost Communication With Left Side Satellite Acceleration Sensor 2 - AutoCodes.com — U0173 Fiat Code - Lost Communication With Left Side Satellite Acceleration Sensor 2

What does this mean?

What are the Possible Causes of the DTC U0173 Fiat?

Faulty Left Side Impact Sensor 2
Left Side Impact Sensor 2 harness is open or shorted
Left Side Impact Sensor 2 circuit poor electrical connection
Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC U0173 Fiat?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0173 Fiat 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 U0173 Fiat code?

Need more information on how to fix the U0173 Fiat code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0173 Fiat 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 U0173 Fiat Code

1. What are the common symptoms of OBDII code U0173 in a Fiat indicating lost communication with the left side satellite acceleration sensor 2?

The common symptoms include the illumination of the check engine light, poor vehicle performance, and potential issues with stability control systems.

2. What are the possible causes of OBDII code U0173 in a Fiat?

Possible causes of this code include a faulty left side satellite acceleration sensor 2, damaged wiring or connectors, communication network issues, or a problem with the powertrain control module (PCM).

3. How can I diagnose the source of the lost communication with the left side satellite acceleration sensor 2 in my Fiat?

Diagnosing the issue typically involves using a diagnostic scanner to retrieve the specific fault codes, checking the wiring and connectors for damage, testing the sensor for functionality, and ensuring proper communication within the vehicle's network.

4. Can I continue driving my Fiat if OBDII code U0173 is present?

It is not recommended to drive the vehicle with this code present, as it can affect the stability and performance of the vehicle. It is best to address the issue promptly to avoid further complications.

5. Is it possible to reset the OBDII code U0173 in a Fiat without repairing the issue?

While you can clear the code using a diagnostic scanner, the underlying issue causing the lost communication with the left side satellite acceleration sensor 2 will persist until repaired. Clearing the code without fixing the problem may lead to recurring issues.

6. What are some repair tips for addressing OBDII code U0173 in a Fiat?

Repair tips may include checking and repairing damaged wiring or connectors, replacing the left side satellite acceleration sensor 2 if faulty, ensuring proper communication network connections, and resetting the fault codes after completing repairs.

7. How much does it typically cost to repair OBDII code U0173 in a Fiat?

The cost of repairing this code can vary depending on the specific issue causing the communication loss. Costs may include parts, labor, diagnostic fees, and any additional services required to resolve the problem.

8. Can a DIY enthusiast fix OBDII code U0173 in a Fiat, or is professional help recommended?

While some enthusiasts may have the skills to diagnose and repair this issue, it is recommended to seek professional help, especially when dealing with complex electrical systems and sensors to ensure the problem is properly addressed.

9. Are there any recalls or technical service bulletins related to OBDII code U0173 in Fiat vehicles?

It is advisable to check with Fiat dealerships or online resources for any recalls or technical service bulletins related to OBDII code U0173 in your specific Fiat model, as manufacturers may provide assistance for known issues.

10. How can I prevent OBDII code U0173 from occurring in my Fiat in the future?

Regular maintenance, including checking the vehicle's electrical system, ensuring proper wiring connections, and addressing any warning signs promptly, can help prevent issues like lost communication with the left side satellite acceleration sensor 2 and related fault codes.