OBD code C1256 indicates a fault in the Electronic Brake Control Module (EBCM) system.
Symptoms include the ABS warning light and engine light being illuminated.
This is usually caused by a faulty EBCM, open/shorted EBCM harness, or poor electrical connection.
It is a serious issue that affects braking performance.
To fix, inspect the wiring harness, connectors, and EBCM for any damage or corrosion.
| 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 c1256 OBD Code
The vehicle may exhibit ABS warning light illumination and possible loss of ABS function with code C1256.
- Symptoms: AntiLock Brake System (ABS) Warning Light ON.
- Engine Light ON (or Service Engine Soon Warning Light).
- Possible loss of ABS functionality.
- Brake pedal may feel different than usual.
- Unusual noises coming from the ABS system.
Causes of the c1256 OBD Code
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Possible issues related to fault code C1256 include ABS pump motor circuit malfunction.
- C1256 can be caused by a faulty Electronic Brake Control Module (EBCM).
- An open or shorted Electronic Brake Control Module (EBCM) harness.
- A poor electrical connection in the Electronic Brake Control Module (EBCM) circuit.
Fixing Error Code c1256 Step By Step
Address the ABS pump motor relay circuit malfunction indicated by fault code C1256.
- To fix OBDII code C1256, first, review the possible causes related to this fault code.
- Visually inspect the wiring harness and connectors associated with the ABS system.
- Check for any damaged components or signs of wear.
- Inspect the connector pins for any issues like being broken, bent, pushed out, or corroded.
- Ensure all connections are secure and free of debris.
- If no visible issues are found, consider performing a diagnostic scan tool ABS module reset.
- If the problem persists, it may be necessary to replace the ABS module with a new one.
Cost Of Fixing c1256 Fault Code
Diagnosing and repairing fault code C1256 typically involves inspecting and servicing the vehicle’s ABS system.
The cost to diagnose and fix OBD code C1256 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the general cost could be between $75 and $150. Factors like shop rates and the complexity of the issue can influence the final cost.
Details of the c1256 OBD Code
C1256 pertains to a malfunction in the ABS pump motor circuit.
OBD code C1256 means Accumulator Low Pressure.
This code is triggered by the ABS (Antilock Braking System) module when it detects that the brake fluid pressure in the accumulator is lower than the specified threshold.
The accumulator is a component of the ABS system that stores hydraulic pressure for rapid brake application.
When the pressure in the accumulator is low, it can affect the performance of the ABS system, potentially leading to decreased braking effectiveness during emergency stops or slippery road conditions.
Mechanic’s Tech Notes
Code C1256 relates to a malfunction in the ABS pump motor circuit.
OBDII code C1256 typically indicates an issue with the ABS pump motor relay circuit.
To diagnose, use a multimeter to check the power and ground connections to the Transmission Control Module (TCM).
Utilize a scan tool to confirm TCM communication over the Controller Area Network (CAN) network.
Visually inspect the wiring harness and connectors for any damage, focusing on broken, bent, or corroded pins.
If no visible issues are found, consider reprogramming the TCM.
FAQ
OBD code C1256 indicates an issue with the Electronic Brake Control Module (EBCM). Check for wiring harness faults and connector issues to resolve.
Common symptoms of OBD code C1256 include ABS warning light and engine light on. Causes may be faulty EBCM or related wiring issues. Inspect and repair as needed.
Diagnose and fix OBD code C1256 by checking EBCM for faults. Inspect wiring harness, connectors for damage, corrosion. Repair as needed to resolve ABS warning light.
Wrap Up
If your ABS warning light is on and you see OBDII code c1256, it may indicate a problem with the accumulator low pressure.
This could be caused by a faulty brake fluid level sensor, a leak in the brake system, or a malfunctioning brake fluid pressure switch.
To address OBDII code c1256, check the brake fluid level, inspect the brake fluid pressure switch and sensor for any damage, and ensure the brake system is free of leaks.
Test the components for proper operation and replace any faulty parts as needed.
