Engine-CodesGeneric – U1212

U1212 Code - Lost Communication With Ultrasonic Alarm Module Missing Message

Quick Answer

The U1212 diagnostic trouble code (DTC) indicates that there is a communication problem between the vehicle's onboard computer system and the Ultrasonic Alarm Module. Common causes include Wiring issues or loose connections, Faulty Ultrasonic Alarm Module, Malfunctioning onboard computer system. 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 Wiring issues or loose connections, Faulty Ultrasonic Alarm Module, Malfunctioning onboard computer system.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code U1212 Description

The U1212 diagnostic trouble code (DTC) indicates that there is a communication problem between the vehicle's onboard computer system and the Ultrasonic Alarm Module. The Ultrasonic Alarm Module is responsible for detecting objects around the vehicle and triggering the alarm if necessary. When communication is lost with this module, it can lead to a malfunction in the alarm system, impacting the vehicle's overall safety and security.

OBDII Code U1212 - Lost Communication With Ultrasonic Alarm Module Missing Message
U1212 Code - Lost Communication With Ultrasonic Alarm Module Missing Message

Common Causes of U1212

  1. Wiring issues or loose connections
  2. Faulty Ultrasonic Alarm Module
  3. Malfunctioning onboard computer system
  4. Software glitch in the vehicle's system

Symptoms of U1212

  1. Alarm system not functioning properly
  2. Dashboard warning lights illuminated
  3. Lack of communication with the Ultrasonic Alarm Module
  4. Increased risk of theft or accidents due to disabled alarm system

How to Fix U1212

  1. Begin by conducting a thorough inspection of the wiring and connections related to the Ultrasonic Alarm Module to check for any damage or loose connections.
  2. Test the Ultrasonic Alarm Module to determine if it is functioning correctly or if it needs to be replaced.
  3. Check the onboard computer system for any faults or errors that could be causing the communication issue with the Ultrasonic Alarm Module.
  4. If a software glitch is suspected, reprogramming or updating the vehicle's software may be necessary to resolve the U1212 code.
  5. After identifying and addressing the root cause of the issue, clear the DTC and test the system to ensure proper communication with the Ultrasonic Alarm Module.

Cost to Fix U1212

The typical repair costs for resolving the U1212 code can vary depending on the specific cause of the issue. In general, the cost of parts for a faulty Ultrasonic Alarm Module can range from $200 to $500, while labor costs can vary between $100 and $200 per hour. Additionally, diagnostic time and labor rates at auto repair shops can fluctuate based on factors such as location, vehicle make and model, and engine type. It's advisable to inquire about local rates to obtain a more accurate estimate for addressing the U1212 code.

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Code U1212 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.

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