AutoCodes - OBDII Code List - B1543 BUICK

B1543 BUICK - Oil Temperature Circuit Open

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

B1543 BUICK 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 do I fix code B1543 BUICK?

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.
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Cost of diagnosing the B1543 BUICK code

Labor: 1.0

The cost of diagnosing the B1543 BUICK 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.

Possible Symptoms

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

B1543 BUICK Description

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.
OBDII Code B1543 Buick - Oil Temperature Circuit Open - AutoCodes.com

More Information

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