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 thinks the brakes are being used too much or too hard, which might not be safe.
The vehicle's control system has detected that the brake torque is higher than expected, which could affect the vehicle's safety systems.
The P189B code is triggered when the vehicle's safety systems detect an abnormally high brake torque value. This could be due to a malfunction in the braking system or a sensor providing incorrect data. The control module monitors the brake torque to ensure the vehicle operates within safe parameters. If the torque exceeds these parameters, the code is set.
• ABS warning light on
• Reduced braking performance
• Unusual brake pedal feel
• Faulty brake pressure sensor
• Malfunctioning ABS module
• Hydraulic brake system issues
Brake Torque: The force applied by the brakes to slow down or stop the vehicle.
ABS Module: Anti-lock Braking System module that prevents the wheels from locking up during braking.
• Check for other related codes.
• Inspect the brake pressure sensor and wiring.
• Test the ABS module functionality.
• Replace the brake pressure sensor if faulty.
• Repair or replace damaged wiring.
• Service or replace the ABS module if needed.
• OBD-II scanner
• Multimeter
• Brake system tools
$200 - $600
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular brake system maintenance
• Check brake fluid levels frequently
• Inspect brake pads and rotors regularly
Brake System Issue
• Drive cautiously until the issue is resolved.
• Avoid hard braking if possible.
Repairs may be covered under the vehicle's powertrain or brake system warranty. Check with the manufacturer or dealer.
This code has been associated with brake system issues in vehicles with advanced safety features. It is relatively uncommon but can indicate serious braking problems.
High – This issue can affect vehicle safety and should be addressed promptly.
Driving with this code active may compromise vehicle safety and could be illegal in some jurisdictions.
• Vehicle at operating temperature
• Perform braking tests in a safe environment
The brake pressure sensor is typically located near the master cylinder or within the ABS module.
Q: Can I drive my car with this code?
A: It's not recommended, as it can affect braking performance and safety.
Q: Will this code clear itself?
A: The code may clear if the issue is resolved, but it's best to have it checked by a professional.
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.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.