P0504
Brake Switch Circuit A / B Correlation
Generic code
Vehicle Speed and Idle Control System
High severity
Easy repair
Free on OBD DashX
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What P0504 means
- The fault code P0504 indicates that there is a correlation error between the A and B circuits of the brake switch. This may cause issues with the brake lights and may affect the operation of the brake system.
Possible symptoms
- Inoperative brake lights
- Illuminated brake warning light on the dashboard
- Issues with the operation of the brake system
Possible causes
- Faulty brake switch
- Wiring or connection issues in the brake switch circuit
- Failed brake control module
Related parts
- Brake Switch Circuit: Brake switch is responsible for engaging and disengaging the brakes on the tires when brakes are applied. Problems lead to inefficient braking
Possible solutions
- Replace the faulty brake switch
- Check and repair any damaged wiring or connections in the brake switch circuit
- Replace the brake control module if necessary
Free on OBD DashX
P0504 on OBD DashX
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