OBD code C1440 indicates an issue with the Hydraulic Control Unit (HCU) in the AntiLock Brake System (ABS).
Symptoms include the ABS warning light and engine light being illuminated.
This is usually caused by a faulty HCU, open/shorted HCU harness, or poor electrical connection.
It is a serious issue that requires immediate attention.
To fix it, inspect the wiring harness and connectors 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) |
Symptoms of the c1440 OBD Code
The vehicle displays a warning light indicating an issue with the ABS hydraulic pump motor circuit (C1440).
- 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 c1440 OBD Code
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Possible triggers for fault code C1440 include issues with the vehicle’s brake pressure sensor.
- C1440 can be caused by a faulty Hydraulic Control Unit (HCU).
- A Hydraulic Control Unit (HCU) harness that is open or shorted.
- A Hydraulic Control Unit (HCU) circuit with a poor electrical connection.
Fixing Error Code c1440 Step By Step
To address fault code C1440, inspect the ABS module and wheel speed sensors for potential issues.
- To fix OBDII code C1440, 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.
- Test the wheel speed sensors for proper operation and signal output.
- Inspect the ABS control module for any signs of damage or malfunction.
- Reset the ABS module using a professional scan tool if necessary.
- Replace the ABS control module if all other components check out fine and the issue persists.
Cost Of Fixing c1440 Fault Code
The repair for fault code C1440 may involve replacing the ABS hydraulic pump motor.
The cost to diagnose and fix OBD code C1440 depends on the estimated 1. 0hour repair time.
Labor rates range from $75 to $150 per hour.
The total cost will vary based on shop rates, complexity of the issue, and any additional parts or services needed.
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Details of the c1440 OBD Code
C1440 indicates an issue with the vehicle’s brake pressure sensor circuit.
OBD code C1440 means the ABS hydraulic pump motor relay circuit is malfunctioning.
This code is triggered by the ABS control module when it detects an issue with the relay circuit for the hydraulic pump motor.
The ABS control module monitors this circuit to ensure proper operation of the ABS hydraulic pump motor.
Mechanic’s Tech Notes
Code C1440 indicates an issue with the vehicle’s brake pressure sensor circuit.
OBDII code C1440 relates to an issue with the traction control module (TCM).
To diagnose, check TCM power and ground using a multimeter.
Verify TCM communication over the CAN network with a scan tool.
Visually inspect wiring harnesses and connectors for damage, and ensure connector pins are intact and free of corrosion.
Reflashing the TCM software may be necessary.
FAQ
OBD code C1440 indicates an issue with the Hydraulic Control Unit (HCU) in the AntiLock Brake System (ABS). Check HCU components and wiring for faults.
Common symptoms of OBD code C1440 include ABS warning light and engine light on. Causes may be faulty HCU or related wiring issues. Inspect and repair as needed.
Diagnose and repair OBD code C1440 by checking for faulty HCU, open/shorted harness, or poor electrical connection. Inspect wiring harness and connectors for damage or corrosion.
Wrap Up
If your ABS warning light is on and you see OBDII code c1440, it may indicate a fault in the brake pressure sensor circuit of the AntiLock Braking System (ABS).
This could be caused by a malfunctioning brake pressure sensor, damaged wiring, or poor connections at the sensor or ABS control module.
To address OBDII code c1440, start by inspecting the wiring harness for any visible damage or corrosion.
Check the connectors at the brake pressure sensor and ABS control module for proper fit and cleanliness.
If no issues are found, consider testing the brake pressure sensor
