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P0504 2002 Toyota Highlander Code - Brake Switch Circuit 'A' / 'B' Correlation

- Code Popularity: 4,475 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 1/3
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What are the Possible Causes of the DTC P0504 2002 Toyota Highlander?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty stop lamp switch
  • Blown stop lamp bulb
  • Brake switch harness open or shorted
  • Brake switch circuit poor electrical connection
  • ECM
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How to Fix the DTC P0504 2002 Toyota Highlander?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

Check the bulb and fuse first, if they are good replace stop lamp switch.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0504 2002 Toyota Highlander code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P0504 2002 Toyota Highlander Description

In addition to turning on the stop lamp, the stop lamp switch signals are used for a variety of engine, transmission, and suspension functions as well as being an input for diagnostic checks. It is important that the switch operates properly, therefore this switch is designed with two complementary signal outputs: STP and ST1.
The Engine Control Module (ECM) analyzes these signal outputs to detect malfunctions in the stop lamp switch.

OBDII Code P0504 2002 Toyota Highlander - Brake Switch Circuit 'A' / 'B' Correlation - AutoCodes.com
P0504 2002 Toyota Highlander Code - Brake Switch Circuit 'A' / 'B' Correlation

Need More Information on the Code?

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Code P0504 2002 Toyota Highlander comments

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