P0504
P0504 - Brake Switch Circuit 'A' / 'B' Correlation
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Possible causes
- Faulty stop lamp switch
- Brake switch harness open or shorted
- Brake switch circuit poor electrical connection
- Brake switch harness open or shorted
- Brake switch circuit poor electrical connection
Help with thisP0504 Description
The Engine Control Module (ECM) has detected a fault in correlation between the two brake switch circuits
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