Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is not getting the right signal from a switch connected to the brake pedal. It's like when a light switch is broken and the light won't turn on.
The P0719 code is triggered when the Engine Control Module (ECM) detects a low voltage signal from the brake switch circuit B.
The brake switch is a critical component that informs the ECM when the brake pedal is pressed. Circuit B refers to a specific part of the brake switch system. A low signal indicates that the ECM is receiving a voltage lower than expected, which could be due to a malfunctioning switch, wiring issues, or a fault in the ECM itself.
• Brake lights not working
• Cruise control not functioning
• Check Engine Light illuminated
• Faulty brake switch
• Damaged wiring or connectors
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Check the brake lights for proper operation.
• Inspect the brake switch for physical damage.
• Test the wiring and connectors for continuity and proper voltage.
• Replace the faulty brake switch.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• Multimeter
• Screwdriver set
• OBD-II scanner
$100 - $300
Moderate
• Honda Accord
• Toyota Camry
• Ford F-150
• Regularly inspect brake lights and switches.
• Ensure all electrical connections are secure.
• Perform routine vehicle maintenance.
Sensor Issue
• Avoid driving with a malfunctioning brake light.
• Have the issue diagnosed by a professional mechanic.
Check with the vehicle manufacturer for warranty coverage on electrical components.
This code has been a common issue in vehicles with aging brake switch components or those exposed to harsh conditions.
Moderate – While the car may still be drivable, brake light issues can be a safety hazard.
Driving with non-functional brake lights can be illegal and unsafe. Immediate attention is recommended.
• Vehicle in park with engine running.
• Press and release the brake pedal to test the switch.
The brake switch is typically located near the brake pedal assembly.
Q: Can I drive with the P0719 code?
A: It's not recommended to drive with this code because your brake lights may not work, which is a safety hazard.
Q: How do I know if the brake switch is faulty?
A: If your brake lights don't illuminate when you press the pedal, the switch may be faulty.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
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