The OBD code C1256 for Toyota indicates an issue with the Accumulator Pressure Sensor circuit in the Skid Control Electronic Control Unit (ECU).
Symptoms include the ABS warning light and engine light being illuminated.
This is usually caused by a faulty sensor, wiring issues, or a problematic ECU.
It is a serious issue that affects the vehicle’s braking system.
To fix it, inspect the sensor, wiring harness, and connectors for any damage or poor connections.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the Toyota c1256 OBD Code
The ABS warning light illuminates on the dashboard in Toyota vehicles with fault code C1256.
- Symptoms: AntiLock Brake System (ABS) Warning Light ON.
- Engine Light ON (or Service Engine Soon Warning Light).
- Possible loss of AntiLock Brake System (ABS) functionality.
- Brake pedal may feel different than usual.
- Unusual noises coming from the ABS system.
Causes of the Toyota c1256 OBD Code
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Possible issues with Toyota C1256 include ABS pump motor circuit malfunction or low brake fluid level.
- C1256 can be caused by a Faulty Accumulator Pressure Sensor.
- An open or shorted Accumulator Pressure Sensor harness.
- Poor electrical connection in the Accumulator Pressure Sensor circuit.
- A Faulty Skid Control ECU.
Fixing Toyota Error Code c1256 Step By Step
Address the issue by inspecting the brake fluid level and quality, and checking for leaks.
- To fix Toyota OBDII code C1256, start by reviewing the possible causes mentioned above.
- Visually examine the wiring harness and connectors related to the ABS system.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Perform a thorough inspection of the wheel speed sensors and tone rings for any damage or debris.
- Test the wheel speed sensor signals using a scan tool to identify any faulty sensors.
- Replace any faulty wheel speed sensors or repair damaged wiring as necessary.
- Clear the fault codes and perform a road test to ensure the issue has been resolved.
Cost Of Fixing Toyota c1256 Fault Code
The repair for Toyota fault code C1256 typically involves diagnosing and fixing issues with the ABS system.
The cost to diagnose and fix Toyota OBD code C1256 typically ranges from $75 to $150 per hour for labor rates.
With an estimated repair time of 1. 0 hour, the total cost can be around $75 to $150, depending on shop rates and the complexity of the issue.
Details of the Toyota c1256 OBD Code
Toyota fault code C1256 relates to a malfunction in the ABS hydraulic pump motor circuit.
OBD code C1256 for Toyota vehicles indicates a malfunction in the ABS pump motor relay circuit.
This code is triggered by the ABS control module when it detects an issue with the relay circuit for the ABS pump motor.
The ABS pump motor relay is responsible for controlling the operation of the ABS pump motor, which is a critical component of the vehicle’s antilock braking system.
When this circuit malfunctions, it can affect the proper operation of the ABS system, potentially compromising vehicle safety.
Mechanic’s Tech Notes
For Toyota C1256, this section provides detailed diagnostic and repair information for the fault code.
To diagnose and fix OBDII code C1256 in a Toyota, start by checking the ABS actuator power and ground using a voltmeter.
Verify the communication between the ABS actuator and the TCM using a scan tool over the CAN network.
If communication issues are detected, reprogramming or reflash may be necessary.
Visually inspect the wiring harness and connectors for any damage, and ensure connector pins are not broken, bent, or corroded.
This thorough inspection can help identify and resolve the root cause of the C1256 fault code.
FAQ
OBD code C1256 in a Toyota means an issue with the Accumulator Pressure Sensor circuit. Check sensor, wiring, and connectors for faults to resolve ABS warning lights.
Common symptoms of code C1256 in a Toyota include ABS warning light on, engine light on, caused by faulty accumulator pressure sensor or wiring issues. Fix: Inspect and repair sensor and wiring.
Diagnose and fix OBD code C1256 in a Toyota: Symptoms include ABS and Engine lights on. Check accumulator pressure sensor, harness, and Skid Control ECU for faults.
Wrap Up
If your Toyota is displaying OBDII code C1256 along with ABS warning lights, it may indicate a malfunction in the accumulator lowpressure sensor circuit.
This could be caused by a faulty accumulator pressure sensor, damaged wiring, or poor connections in the ABS system.
To address Toyota OBDII code C1256, start by inspecting the wiring harness and connectors related to the accumulator pressure sensor.
Check for any signs of damage, corrosion, or loose connections.
Test the sensor itself for proper operation and replace if necessary to restore ABS system functionality.
