Engine-Codes - Lexus - P1520 LEXUS

P1520 LEXUS - Stop Lamp Switch Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1520 LEXUS Possible Causes

  • Faulty Stop Light Switch
  • Stop Light Switch harness is open or shorted
  • Stop Light Switch circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How is the P1520 LEXUS 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 P1520 LEXUS code

Labor: 1.0

The cost to diagnose the P1520 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.
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Possible Symptoms

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

P1520 LEXUS Meaning

This signal is used to detect when the brakes have been applied. The STP signal voltage is the same as the voltage supplied to the stop lights. The STP signal is used mainly to control the fuel cut–off engine speed (The fuel cut–off engine speed is reduced slightly when the vehicle is braking).

More Information

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