Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the sensor that checks how hard you're pressing the brake pedal. It's like when a video game controller button doesn't work right, so the game can't tell if you're pressing it.
The brake booster pressure sensor is responsible for monitoring the pressure within the brake booster. This code indicates that the sensor readings are not plausible, meaning they don't make sense based on expected values.
The C1025 code is triggered when the brake booster pressure sensor provides readings that are inconsistent with expected values. This could be due to a fault in the sensor itself, wiring issues, or problems with the brake booster system.
• Brake warning light on the dashboard
• Reduced braking performance
• Unusual brake pedal feel
• Faulty brake booster pressure sensor
• Damaged or corroded wiring/connectors
• Malfunctioning brake booster
Brake Booster: A device that uses vacuum to help apply force to the brakes.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use an OBD-II scanner to confirm the code.
• Inspect the brake booster pressure sensor and its wiring for damage.
• Test the sensor with a multimeter to ensure proper functionality.
• Replace the brake booster pressure sensor if faulty.
• Repair or replace damaged wiring/connectors.
• Replace the brake booster if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Dodge Charger
• Jeep Grand Cherokee
• Chrysler 300
• Regularly inspect brake system components.
• Ensure brake fluid is at the correct level.
• Address any brake system warnings promptly.
Sensor Issue
• Do not ignore the brake warning light.
• Have the brake system inspected by a professional.
• Avoid driving the vehicle until the issue is resolved.
Check with the vehicle manufacturer for specific warranty coverage on brake components.
This code has become more common as vehicles have incorporated more electronic sensors in the braking system.
High – Brake system issues should be addressed immediately to ensure vehicle safety.
Driving with a malfunctioning brake system is unsafe and may be illegal in some jurisdictions.
• Vehicle parked on a level surface
• Engine off and cool
The brake booster pressure sensor is typically located near the brake master cylinder or integrated within the brake booster.
Q: Can I drive with a C1025 code?
A: It's not recommended to drive with this code active, as it indicates a potential issue with the brake system.
Q: How can I reset the C1025 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
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Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
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