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U1901 Cadillac Code - Lost Communication With Infotainment Multifunction Switch Module

- Code Popularity: 361 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By - Updated Jun 09, 2020
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|Code U1901 Cadillac Possible Causes

  • Faulty Infotainment Multifunction Switch Module
  • Infotainment Multifunction Switch Module harness is open or shorted
  • Infotainment Multifunction Switch Module circuit poor electrical connection

|How do I Fix the Code U1901 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 U1901 Cadillac?

Labor: 1.0

The cost of diagnosing the U1901 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 U1901 Cadillac Possible Symptoms?

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

|Code U1901 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. The Diagnostic Trouble Code (DTC) will set a supervised periodic message that includes the transmitter device availability that has not been received.

OBDII Code U1901 Cadillac - Lost Communication With Infotainment Multifunction Switch Module -
U1901 Cadillac Code - Lost Communication With Infotainment Multifunction Switch Module

|Need More Information on the U1901 Cadillac Code?

Need more information on how to fix the U1901 Cadillac code? Get Access to Factory Service Manuals

|Need Help with the U1901 Cadillac Code?

Get the U1901 Cadillac code diagnosed by a professional: Find a repair shop in your area

|Code U1901 Cadillac comments

Help us improve 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 U1901 Cadillac code? Have you replaced any parts?
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