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U240A Code - Transmission Range Control Module Chassis Expansion CAN Bus Off

- Code Popularity: 324 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
By AutoCodes.com - Updated Jun 17, 2020
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|U240A code possible causes

  • Faulty Transmission Range Control Module
  • Transmission Range Control Module harness is open or shorted
  • Transmission Range Control Module circuit poor electrical connection

|How do I fix code U240A code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing U240A code

Labor: 1.0

The cost of diagnosing the U240A code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are U240A code possible symptoms?

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

|U240A code description

The chassis high-speed General Motors Local Area Network (GMLAN)serial data circuits are serial data buses used to communicate information between the devices. The chassis high speed GMLAN serial data circuits also connect directly to the X84 Data Link Connector (DLC) for programming purposes. If this serial data system is inoperative, the devices will still communicate with the scan tool due to other serial data systems but not with each other. The device setting the Diagnostic Trouble Code (DTC) has attempted to establish communications on the chassis high-speed GMLAN serial data circuits more than 3 times.

OBDII Code U240a - Transmission Range Control Module Chassis Expansion CAN Bus Off - AutoCodes.com
U240A Code - Transmission Range Control Module Chassis Expansion CAN Bus Off

|Need more information with the U240A code?

Need more information on how to fix the U240A code?
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|Information for specific makes

  • U240A BUICK Transmission Range Control Module Chassis Expansion CAN Bus Off
  • U240A CADILLAC Transmission Range Control Module Chassis Expansion CAN Bus Off
  • U240A CHEVROLET Transmission Range Control Module Chassis Expansion CAN Bus Off
  • U240A GMC Transmission Range Control Module Chassis Expansion CAN Bus Off

|Need help with a U240A code?

Get the U240a code diagnosed by a professional: Find a repair shop in your area

|U240A code comments

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