AutoCodes – Generic – U1193

U1193 Code - Lost Communication With Driver Side Blind Spot Sensor

Quick Answer

The Blind Spot Monitor (BSM) system used in this vehicle has two control modules. Common causes include Faulty Left Blind Spot Sensor (LBSS), Left Blind Spot Sensor harness is open or shorted, Left Blind Spot Sensor 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: U1193 indicates Lost Communication With Driver Side Blind Spot Sensor.
Common causes: Common causes include Faulty Left Blind Spot Sensor (LBSS), Left Blind Spot Sensor harness is open or shorted, Left Blind Spot Sensor 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 5,797

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 Apr 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code U1193 Description

The Blind Spot Monitor (BSM) system used in this vehicle has two control modules. One control module is dedicated to each side of the vehicle. The blind spot modules are each integral to the blind spot sensor for the same side of the vehicle. If the sensor detects a vehicle in the blind spot path, the module will send a Controller Area Network (CAN) bussed message to the corresponding door module for a LED blind spot warning light request. The Diagnostic Trouble Code (DTC) sets when the Right Blind Spot Sensor (RBSS) does not receive messages from the Left Blind Spot Sensor (LBSS).

OBDII Code U1193 - Lost Communication With Driver Side Blind Spot Sensor - AutoCodes.com — U1193 Code - Lost Communication With Driver Side Blind Spot Sensor

What does this mean?

What are the Possible Causes of the DTC U1193?

Faulty Left Blind Spot Sensor (LBSS)
Left Blind Spot Sensor harness is open or shorted
Left Blind Spot Sensor circuit poor electrical connection

How to Fix the DTC U1193?

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 U1193 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 U1193 code?

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Information for Specific Makes

U1193 Buick — Loss Of Vehicle Immobilizer Module Communications
U1193 Cadillac — Loss Of Vehicle Immobilizer Module Communications
U1193 Chevrolet — Loss Of Vehicle Immobilizer Module Communications
U1193 Chrysler — Lost Communication With Driver Side Blind Spot Sensor
U1193 Dodge — Lost Communication With Driver Side Blind Spot Sensor
U1193 GMC — Loss Of Vehicle Immobilizer Module Communications
U1193 Jeep — Lost Communication With Driver Side Blind Spot Sensor
U1193 RAM — Lost Communication With Driver Side Blind Spot Sensor

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.