AutoCodes - Cadillac - U1548 CADILLAC

U1548 CADILLAC Code - Body Control Module Lost Communication With Left Rear Window Switch On LIN Bus

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|U1548 CADILLAC code possible causes

  • Faulty Left Rear Window Switch
  • Left Rear Window Switch harness is open or shorted
  • Left Rear Window Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

|How do I fix the U1548 CADILLAC 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 the U1548 CADILLAC code

Labor: 1.0

The cost of diagnosing the U1548 CADILLAC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are U1548 CADILLAC code possible symptoms?

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

|U1548 CADILLAC code description

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. The serial data is transmitted over a LIN circuit between a master control module and other LIN devices within a particular subsystem. If serial data communication is lost between any of the LIN devices on the LIN bus network, the master control module will set a no communication code against the non-communicating LIN device. The Diagnostic Trouble Code (DTC) will set when a supervised periodic message to the Body Control Module (BCM) from the Left Rear Window Switch has not been received.
OBDII Code U1548 Cadillac - Body Control Module Lost Communication With Left Rear Window Switch On LIN Bus - AutoCodes.com

|Need more information with the U1548 CADILLAC code?

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|U1548 CADILLAC code comments

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