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U2178 Cadillac Code - Lost Communication With Trailer Interface Control Module

- Code Popularity: 513 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Jun 15, 2020
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|Code U2178 Cadillac Possible Causes

  • Faulty Trailer Interface Control Module
  • Trailer Interface Control Module harness is open or shorted
  • Trailer Interface Control Module circuit poor electrical connection

|How do I Fix the Code U2178 Cadillac?

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.

Does your Cadillac have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code U2178 Cadillac?

Labor: 1.0

The cost of diagnosing the U2178 Cadillac 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 Code U2178 Cadillac Possible Symptoms?

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

|Code U2178 Cadillac 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. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2178 Cadillac - Lost Communication With Trailer Interface Control Module - AutoCodes.com
U2178 Cadillac Code - Lost Communication With Trailer Interface Control Module

|Need More Information on the U2178 Cadillac Code?

Need more information on how to fix the U2178 Cadillac code? Get Access to Factory Service Manuals

|Need Help with the U2178 Cadillac Code?

Get the U2178 Cadillac code diagnosed by a professional: Find a repair shop in your area

|Code U2178 Cadillac comments

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