Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This means there's a problem with the part of the car that helps control the brakes. It's like when a toy's battery is low and it doesn't work right.
The P25EF code indicates that the vehicle's computer has detected a problem with the performance of the vacuum pump control circuit, specifically Circuit B.
The vacuum pump is used to assist with brake boosting and other systems that require vacuum. The control circuit ensures the pump operates within specified parameters. If the circuit's performance is outside the expected range, this code is triggered.
• Reduced braking performance
• Check engine light on
• Unusual noises from the engine bay
• Faulty vacuum pump
• Wiring issues in the control circuit
• Defective control module
Vacuum Pump: A device that removes air to create a vacuum, often used to assist brake systems.
Control Circuit: An electrical circuit that manages the operation of a component.
• Check for any additional codes
• Inspect the vacuum pump and associated wiring
• Test the control module for proper operation
• Replace or repair the vacuum pump
• Fix any damaged wiring
• Replace the control module if necessary
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks
• Inspect wiring for wear
• Ensure proper vacuum pump operation
Sensor Issue
• Do not ignore the check engine light
• Get the brakes checked as soon as possible
Check with your vehicle manufacturer for specific warranty coverage on the vacuum pump and related components.
This code has been associated with issues in vehicles that use electric vacuum pumps for brake assistance.
High – This issue can affect braking performance, which is critical for vehicle safety.
Driving with impaired brakes can be dangerous and may violate traffic safety laws.
• Engine running
• Vehicle stationary
The vacuum pump is typically located near the engine bay, often mounted on or near the engine.
Q: Can I drive with a P25EF code?
A: It's not recommended as it may affect braking performance. Get it checked soon.
Q: How do I know if my vacuum pump is failing?
A: You may hear unusual noises or notice reduced braking efficiency.
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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Universal · Torque wrench
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Universal · Drive-on ramps
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