OBD code C1406 indicates an issue with the Front Speed Sensor Left circuit in the AntiLock Brake System (ABS).
Symptoms include the ABS warning light and engine light being illuminated.
This is commonly caused by a faulty front speed sensor, wiring harness issues, or a faulty Skid Control ECU.
It is a moderate issue that should be addressed promptly.
To fix it, inspect the front speed sensor, wiring harness, and connectors for any faults or damage.
| 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 c1406 OBD Code
The vehicle displays an ABS warning light on the dashboard.
- 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 during braking.
- Unusual noises from the ABS system.
Causes of the c1406 OBD Code
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Possible triggers for fault code C1406 include issues with the vehicle’s speed sensor circuit.
- C1406 can be caused by a Faulty Front Speed Sensor Left.
- A Front Speed Sensor Left harness that is open or shorted.
- A Front Speed Sensor Left circuit with a poor electrical connection.
- A Faulty Skid Control ECU (Brake Actuator Assembly).
Fixing Error Code c1406 Step By Step
To address fault code C1406, inspect the ABS sensor and wiring for potential issues.
- To fix OBDII code C1406, first, review the possible causes related to this fault code.
- Visually examine the wiring harness and connectors associated with the wheel speed sensor circuit.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Test the wheel speed sensor using a multimeter to ensure it is functioning correctly.
- Replace the wheel speed sensor if it is faulty.
- Clear the fault code using an OBDII scanner and test drive the vehicle to verify the repair.
Cost Of Fixing c1406 Fault Code
Diagnosing and repairing fault code C1406 typically involves inspecting and possibly replacing the vehicle’s speed sensor.
The cost to diagnose and fix OBD code C1406 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
The total cost depends on labor rates, shop fees, and the complexity of the repair.
Details of the c1406 OBD Code
C1406 indicates an issue with the vehicle’s traction control system.
OBD code C1406 means the ABS system has detected a problem with the Front Left Speed Sensor Circuit.
This code is triggered by the ABS control module when it detects an issue with the signal coming from the front left wheel speed sensor.
The ABS control module monitors the speed of each wheel using sensors to ensure proper operation of the ABS system.
When it detects a discrepancy or fault in the signal from the front left wheel speed sensor, it will trigger code C1406.
Mechanic’s Tech Notes
Code C1406 indicates an issue with the vehicle’s front right sensor circuit.
To diagnose and fix OBDII code C1406, start by checking the Transmission Control Module (TCM) power and ground using a multimeter.
Verify TCM communication over the Controller Area Network (CAN) using a scan tool.
If the TCM does not respond, reprogramming or reflashing may be necessary.
Visually inspect the wiring harness and connectors for any damage, and check connector pins for signs of being broken, bent, pushed out, or corroded.
This thorough inspection can help identify and address the root cause of the C1406 fault code.
FAQ
OBD code C1406 indicates an issue with the Front Speed Sensor Left circuit. Check sensor, wiring, and connections for faults to resolve ABS and engine light warnings.
Common symptoms of OBD code C1406 include ABS warning light on, engine light on, caused by faulty front left speed sensor or wiring issues. Fix: Inspect and repair affected components.
Diagnose OBD code C1406 by checking the Front Speed Sensor Left and its wiring for faults. Inspect connectors for damage or corrosion.
Wrap Up
If your ABS warning light is on and you see OBDII code c1406, it may indicate a fault in the front right wheel speed sensor circuit.
This could be caused by a damaged sensor, faulty wiring, or poor connections.
To address OBDII code c1406, start by inspecting the front right wheel speed sensor and its wiring harness for any visible damage.
Test the sensor’s resistance and check the connector for corrosion or loose pins.
Replace the sensor if necessary and ensure all connections are secure.
