Question

2011 Hyundai Santa Fe 3.5L with the engine code P0504, what does the code mean?

Answer 1

Hi there,

This code basically is pointing to a problem with the stop lamp switch or the harness connection to the stop lamp switch. This is mounted to the brake pedal bracket under the dash. You can check the connections under the dash and if it looks good, the issue is likely the stop lamp switch itself. Also, be sure to check the stop lamp fuse as well.

Answer 2

P0504 Hyundai Code - Brake Switch 'A' / 'B' Correlation
Read more: https://www.autocodes.com/p0504_hyundai.html