Engine-Codes - Lexus - B1503 LEXUS

B1503 LEXUS - Exhaust Heat Management Warning Detected

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

B1503 LEXUS Possible Causes

  • Faulty Engine Coolant Temperature Sensor
  • Engine Coolant Temperature Sensor harness is open or shorted
  • Engine Coolant Temperature Sensor circuit poor electrical connection
  • Faulty Combination Meter Assembly

How do I fix code B1503 LEXUS?

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 B1503 LEXUS code

Labor: 1.0

The cost of diagnosing the B1503 LEXUS code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

B1503 LEXUS Meaning

This Diagnostic Trouble Code (DTC) is stored when the Combination Meter Assembly (meter circuit plate) detects a malfunction in the Engine Coolant Temperature Sensor that is connected to the Combination Meter Assembly (meter circuit plate) via a direct line.

B1503 LEXUS More Information

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