C1412: LF Traction Control Valve Short to Ground
The C1412 code indicates that the ABS control module has detected a short to ground in the left front traction control valve circuit. This fault disables the traction control and ABS functions for that wheel, causing the corresponding warning lights to illuminate on the dashboard.
1. Commonly Affected Makes
2. Most Common Causes
- Wiring harness for the LF valve shorted to ground (damaged insulation, chafing)
- LF traction control solenoid valve internally shorted
- LF valve connector corroded, loose, or with bent pins
- Faulty hydraulic control unit (HCU) or ABS module (EBCM)
3. Symptoms You Will Notice
- ABS warning light on
- Traction control warning light on
- Loss of traction control function on left front wheel
- Possible loss of ABS function on left front wheel
4. Step-by-Step Diagnosis
Scan for codes and verify C1412 is present
Visually inspect LF valve wiring and connector for damage, corrosion, or loose pins
Measure resistance between LF valve circuit and ground; a short indicates a fault
Test the LF solenoid valve by applying battery voltage and listening for a click; if no click, replace valve
If wiring and valve are good, suspect HCU or EBCM failure
5. Frequently Asked Questions
Is it safe to drive?▼
Driving is not recommended because the ABS and traction control are compromised, increasing the risk of wheel lockup or loss of control during braking or acceleration, especially on slippery surfaces.
How much does it cost to fix?▼
Repair costs typically range from $150 to $600, depending on whether the issue is a simple wiring repair, a solenoid valve replacement, or a more expensive HCU/EBCM replacement.