AutoCodes.com | All About OBDII Engine Codes
AutoCodes - Generic - U18AB

U18AB Code - Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus

- Code Popularity: 408 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC U18AB?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Chassis Control Module
  • Chassis Control Module harness is open or shorted
  • Chassis Control Module circuit poor electrical connection
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC U18AB?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for U18AB Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U18AB code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code U18AB Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. The Diagnostic Trouble Code (DTC) will set a supervised periodic message that includes the transmitter device availability that has not been received.

OBDII Code U18AB - Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus - AutoCodes.com
U18AB Code - Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus

Need More Information on the Code?

Need more information on how to fix the U18AB code? Get Access to Factory Service Manuals

Information for Specific Makes

  • U18AB Buick Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus
  • U18AB Cadillac Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus
  • U18AB Chevrolet Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus
  • U18AB GMC Transmission Range Control Module Lost Communication With Chassis Control Module On High Speed CAN Bus

Need Help with the Code?

Get the U18AB code diagnosed by a professional: Find a repair shop in your area

Code U18AB comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the U18AB code? Have you replaced any parts?
Any information is appreciated. Thanks