C1256 on Toyota
Manufacturer-Specific Chassis Code (commonly ABS/Brake Pressure or Wheel Circuit)
C1256 on Toyota vehicles indicates manufacturer-specific chassis code (commonly abs/brake pressure or wheel circuit). Au7o has documented this code across 2 Toyota models — most commonly on 4Runner, Camry. C1256 is a manufacturer-specific chassis code whose exact meaning varies by automaker, typically within the ABS, traction control, or brake hydraulic system. It generally indicates the ABS/stability control module detected an abnormal signal or circuit fault for a pressure sensor, solenoid, or wheel circuit. Since it involves braking/stability systems, warning lamps usually light and the affected function can be temporarily limited. Confirm the specific component with make-specific service information before replacing parts. Typical repair costs on Toyota range from $1,200 to $3,000, depending on the specific model and root cause.
Common Causes of C1256
- •Faulty brake/ABS pressure or wheel speed sensor
- •Damaged or corroded wiring/connector in the ABS circuit
- •Open or short in the affected sensor/solenoid circuit
- •Failing ABS/EBCM control module
- •Low system voltage or poor ground
- •Hydraulic modulator internal fault
C1256 on Toyota by Model
Toyota 4Runner(1 issue)
- Brake Booster / Master Cylinder Internal Leak Causing Hard Pedal and Reduced Braking Assist2003-2009
Multiple 4th-generation 4Runner owners report the brake pedal becoming hard, requiring excessive effort to stop, often accompanied by ABS/VSC/TRAC warning lights and a buzzing or continuously running brake actuator. Toyota issued service information for brake booster pump/master cylinder concerns on related platforms, and owner complaints frequently describe internal accumulator or actuator failure rather than simple pad/rotor wear. Repairs are expensive because the booster/master/actuator assembly is typically replaced as a unit.
Toyota Camry(1 issue)
- Brake Actuator / ABS Module Internal Failure Causing Warning Lights and Loss of Assist2007-2017
A well-documented issue on many Camry and Camry Hybrid models is failure of the brake actuator/ABS pump assembly, often accompanied by ABS, brake, traction, and master warning lights. Owners report the pump running frequently or continuously, a buzzing noise from the engine bay, hard pedal feel, and reduced brake assist. On hybrids, this can become especially expensive because the actuator and booster assemblies are complex and labor-intensive to replace.
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View C1256 across all makes →Frequently Asked Questions
What does C1256 mean on Toyota?▼
C1256 stands for "Manufacturer-Specific Chassis Code (commonly ABS/Brake Pressure or Wheel Circuit)." C1256 is a manufacturer-specific chassis code whose exact meaning varies by automaker, typically within the ABS, traction control, or brake hydraulic system. It generally indicates the ABS/stability control module detected an abnormal signal or circuit fault for a pressure sensor, solenoid, or wheel circuit. Since it involves braking/stability systems, warning lamps usually light and the affected function can be temporarily limited. Confirm the specific component with make-specific service information before replacing parts. On Toyota specifically, this code is documented across 2 models.
What causes C1256 on Toyota vehicles?▼
Common causes on Toyota: Faulty brake/ABS pressure or wheel speed sensor, Damaged or corroded wiring/connector in the ABS circuit, Open or short in the affected sensor/solenoid circuit, Failing ABS/EBCM control module, Low system voltage or poor ground. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C1256 on a Toyota?▼
Repair costs on Toyota range from $1,200 to $3,000, depending on the specific model and root cause.
Which Toyota models have C1256 documented?▼
Au7o has documented C1256 on 2 Toyota models: 4Runner, Camry.