OBD code C0120 indicates a fault with the Front Inlet Solenoid Valve Left in the AntiLock Brake System (ABS).
Symptoms include the ABS warning light and engine light being illuminated.
The issue is typically caused by a faulty solenoid valve, wiring harness issues, or poor electrical connections.
This is a serious problem that affects the vehicle’s braking system.
To fix it, inspect and repair any damaged components, wiring harness, or connectors related to the Front Inlet Solenoid Valve Left.
| 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 c0120 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.
- Strange noises from the ABS system.
- Brake pedal may feel different than usual.
Causes of the c0120 OBD Code
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Possible triggers for fault code C0120 include issues with the ABS pump motor circuit.
- C0120 can be caused by a faulty Front Inlet Solenoid Valve Left.
- A Front Inlet Solenoid Valve Left harness that is open or shorted.
- A Front Inlet Solenoid Valve Left circuit with poor electrical connection.
Fixing Error Code c0120 Step By Step
Repairing fault code C0120 involves inspecting and potentially replacing the front left wheel speed sensor circuit.
- To fix OBDII code C0120, first, review the possible causes related to this code.
- Visually examine the wiring harness and connectors associated with 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 the issue persists, consider replacing the ABS control module with a new one.
Cost Of Fixing c0120 Fault Code
The repair for fault code C0120 may involve replacing the ABS pump motor circuit.
The cost to diagnose and fix OBD code C0120 depends on the estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150. Factors like shop rates and complexity can affect the final cost.
Details of the c0120 OBD Code
Code C0120 indicates a malfunction in the ABS hydraulic pump motor circuit.
OBD code C0120 indicates a fault with the ABS Pump Motor Circuit.
This code is triggered by the Antilock Brake System (ABS) control module when it detects an issue with the pump motor circuit.
The ABS pump motor is responsible for building hydraulic pressure in the ABS system to assist with braking.
When this code is set, it typically points to a problem with the ABS pump motor itself, the wiring harness, or the connections associated with the motor circuit.
Mechanic’s Tech Notes
Code C0120 indicates a malfunction in the ABS hydraulic pump motor circuit.
To diagnose and fix OBDII code C0120, start by checking the ABS/TCS control module power and ground using a voltmeter.
Verify communication between the module and other control modules over the CAN network using a scan tool.
If communication issues are detected, reprogramming or reflashing the module may be necessary.
Visually inspect the wiring harness and connectors for any damage, and ensure connector pins are not broken, bent, pushed out, or corroded.
Address any issues found during the inspection to resolve the C0120 fault code.
FAQ
OBD code C0120 indicates an issue with the Front Inlet Solenoid Valve Left in the AntiLock Brake System. Check valve, harness, and connectors for faults.
Common symptoms of OBD code C0120 include ABS warning light on, engine light on, caused by faulty front inlet solenoid valve left or related wiring issues. Fix: Inspect and repair as needed.
Diagnose and repair OBD code C0120 by checking the Front Inlet Solenoid Valve 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 c0120, it may indicate a faulty front left wheel speed sensor, damaged wiring harness, or poor electrical connection at the sensor.
This can lead to inaccurate speed readings and affect ABS system performance.
To address OBDII code c0120, inspect the front left wheel speed sensor and its wiring for any visible damage.
Test the sensor’s resistance and check for proper voltage supply.
Ensure connectors are clean, secure, and free of corrosion.
Replace the sensor if necessary.
