Brake Switch ‘A’ / ‘B’ Correlation
Table of contents
P0504 HYUNDAI Possible Causes
- Faulty Brake Lamp Switch
- Blown Brake Lamp Bulb
- Blown Brake Lamp Fuse
- Brake Lamp Switch harness open or shorted
- Brake Lamp Switch circuit poor electrical connection
How do I fix code P0504 HYUNDAI?
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.
Tech Notes
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Cost of diagnosing the P0504 HYUNDAI code
The cost of diagnosing the P0504 HYUNDAI 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)
P0504 HYUNDAI 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.