Engine-Codes.com | All About OBDII Engine Codes
Engine-Codes.com | All About OBDII Engine Codes

P0504

P0504 - Brake Switch Circuit 'A' / 'B' Correlation

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P0504 Comments |  Add Comment
Possible causes
- Faulty stop lamp switch
- Blown stop lamp bulb
- Brake switch harness open or shorted
- Brake switch circuit poor electrical connection

Help with Possible causes What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0504 Description

The Engine Control Module (ECM) has detected a fault in correlation between the two brake switch circuits

P0504 Information for specific makes
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