AutoCodes – Generic – U1212

U1212 Code - Lost Communication With Ultrasonic Alarm Module Missing Message

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Body Control Module (BCM) does not receive information from the Ultrasonic Alarm Module (UAM). Common causes include Faulty Ultrasonic Alarm Module (UAM), Ultrasonic Alarm Module harness is open or shorted, Ultrasonic Alarm Module 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: U1212 indicates Lost Communication With Ultrasonic Alarm Module Missing Message.
Common causes: Common causes include Faulty Ultrasonic Alarm Module (UAM), Ultrasonic Alarm Module harness is open or shorted, Ultrasonic Alarm Module 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 7,175

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 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code U1212 Description

The Diagnostic Trouble Code (DTC) sets when the Body Control Module (BCM) does not receive information from the Ultrasonic Alarm Module (UAM).

OBDII Code U1212 - Lost Communication With Ultrasonic Alarm Module Missing Message - AutoCodes.com — U1212 Code - Lost Communication With Ultrasonic Alarm Module Missing Message

What does this mean?

What are the Possible Causes of the DTC U1212?

Faulty Ultrasonic Alarm Module (UAM)
Ultrasonic Alarm Module harness is open or shorted
Ultrasonic Alarm Module circuit poor electrical connection

How to Fix the DTC U1212?

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 U1212 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 U1212 code?

Need more information on how to fix the U1212 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1212 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1212 Chrysler — Lost Communication With Ultrasonic Alarm Module Missing Message
U1212 Dodge — Lost Communication With Ultrasonic Alarm Module Missing Message
U1212 Jeep — Lost Communication With Ultrasonic Alarm Module Missing Message
U1212 RAM — Lost Communication With Ultrasonic Alarm Module Missing Message

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.