Engine-Codes - Cadillac - B1543 CADILLAC

B1543 CADILLAC Code - Oil Temperature Circuit Open

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B1543 CADILLAC code possible causes

  • Faulty Oil Temperature Sensor
  • Oil Temperature Sensor harness is open or shorted
  • Oil Temperature Sensor circuit poor electrical connection
  • Faulty Instrument Panel Cluster (IPC)

|How is the B1543 CADILLAC code repair?

Start by checking 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.

|What is the cost to diagnose the B1543 CADILLAC code

Labor: 1.0

The cost to diagnose the B1543 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 B1543 CADILLAC code possible symptoms?

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

|What is B1543 CADILLAC code meaning?

The Instrument Panel Cluster (IPC) supplies a 5-volt reference signal to Oil Temperature Sensor. When engine oil is cold, sensor resistance will decrease, and IPC reference voltage level will drop. IPC measures reference voltage change and displays the calculated value on the oil pressure gauge.

|Need more information with the B1543 CADILLAC code?

Need more information on how to fix the B1543 CADILLAC code?
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|Need help with a B1543 CADILLAC code?

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