AutoCodes – Generic – U1117

U1117 Code - Lost Communication With ABS

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the ignition switch is ON, Transmission Control Module (TCM) is unable to receive the CAN communications signal from Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit) continuously for 2 seconds or more. Common causes include Faulty Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit), ABS Control Unit harness is open or shorted, ABS Control Unit 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: U1117 indicates Lost Communication With ABS.
Common causes: Common causes include Faulty Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit), ABS Control Unit harness is open or shorted, ABS Control Unit 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 29,484

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 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code U1117 Description

OBDII Code U1117 - Lost Communication With ABS - AutoCodes.com — U1117 Code - Lost Communication With ABS

What does this mean?

What are the Possible Causes of the DTC U1117?

Faulty Anti-Lock Brake System (ABS) Actuator and Electric Unit (Control Unit)
ABS Control Unit harness is open or shorted
ABS Control Unit circuit poor electrical connection

How to Fix the DTC U1117?

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 U1117 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 U1117 code?

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Need Help with the Code?

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Information for Specific Makes

U1117 Chrysler — Lost Communication With Right Rear Tire Pressure Trigger Module
U1117 Dodge — Lost Communication With Right Rear Tire Pressure Trigger Module
U1117 Infiniti — Lost Communication With ABS
U1117 Jeep — Lost Communication With Right Rear Tire Pressure Trigger Module
U1117 Lexus — Lost Communication with Accessory Gateway
U1117 Nissan — Lost Communication With ABS
U1117 RAM — Lost Communication With Right Rear Tire Pressure Trigger Module
U1117 Toyota — Lost Communication with Accessory Gateway

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.