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 helps your car's brakes work properly. It's like when a toy's battery is low and it doesn't work right.
The C1012 code is triggered when the vehicle's computer detects an electrical issue with the brake booster pressure sensor circuit.
The brake booster pressure sensor monitors the pressure within the brake booster to ensure proper braking performance. The sensor sends this information to the vehicle's electronic control unit (ECU). If the ECU detects an abnormal signal or no signal from the sensor, it will set the C1012 code.
• Illuminated check engine light
• Reduced braking performance
• Unusual brake pedal feel
• Faulty brake booster pressure sensor
• Damaged wiring or connectors in the sensor circuit
• Faulty ECU
ECU: Electronic Control Unit
OBD-II: On-Board Diagnostics II
• Inspect the brake booster pressure sensor and its wiring for damage.
• Test the sensor's electrical connector for proper connection.
• Use a multimeter to check the sensor's output signal.
• Replace the brake booster pressure sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECU if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Dodge Charger
• Jeep Grand Cherokee
• Chrysler 300
• Regularly inspect brake system components.
• Ensure electrical connections are secure.
• Perform routine vehicle maintenance.
Sensor Issue
• Do not ignore the brake warning light.
• Have your brakes checked by a professional if you notice any issues.
Check with your vehicle manufacturer for warranty coverage on brake components.
This code has been reported in various models, often related to sensor wear or electrical issues.
High – Brake issues can affect vehicle safety and should be addressed immediately.
Driving with impaired brakes can be dangerous and may violate traffic safety laws.
• Vehicle parked on a level surface
• Engine off
The brake booster pressure sensor is typically located near the brake booster assembly, which is usually found on the driver's side of the engine compartment.
Q: Can I drive with the C1012 code?
A: It's not recommended to drive with brake-related issues as it can be unsafe.
Q: How do I reset the C1012 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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