P0504Kia StingerYears: 1996 - 2026
Brake Switch A/B Correlation
Reviewed by ASE Certified Technician
What does this mean?
Code P0504 indicates a problem with the idle air control system or brake switch.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Kia Stinger models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Dirty or faulty throttle body
Vacuum leak in intake system
Faulty brake light switch
Damaged, chafed, or broken wiring harness
Symptoms to Watch For
- Check Engine Light is illuminated
- Rough or unstable idle
- Abnormally high idle speed
- Abnormally low idle speed
- Engine stalling or dying unexpectedly
- Erratic or fluctuating idle speed