What Does C1413 Mean?
The ABS module has detected a short-to-battery (B+) condition in the left front (LF) traction control valve solenoid circuit. Unwanted positive voltage is present on the solenoid control line from an external source, preventing the module from properly controlling the valve. Traction control is disabled with the warning light illuminated.
Common Causes
40%
Harness damage allowing contact between solenoid wires and power supply wires
25%
Improper previous wiring repair or aftermarket wiring cross-feeding voltage
20%
Connector pin damage or misalignment causing cross-contact with power pin
15%
ABS module internal failure with backfeed voltage on driver output
Diagnostic Steps
1
Disconnect the ABS HCU connector. Measure voltage on the LF solenoid circuit pins with a voltmeter referenced to ground — should read 0V. Voltage present indicates an external power backfeed.
2
If voltage is found, disconnect the solenoid at the valve end and re-measure to determine if the backfeed is in the harness or from the solenoid side.
3
Trace the wiring and inspect for insulation damage, especially where solenoid wires share routing with power supply circuits (relay feeds, pump motor circuits).
4
Inspect the ABS connector body for melted or deformed pin guides, contamination, or corrosion that could bridge solenoid pins to adjacent power pins.
5
If no external fault is found, reconnect the harness and monitor the solenoid driver output while commanding activation — constant B+ regardless of command state indicates an internal module failure.
Estimated Repair Cost
$100 - $1,200
Parts + labor, varies by vehicle and location
The ABS module has detected a short-to-battery (B+) condition in the left front (LF) traction control valve solenoid circuit. Unwanted positive voltage is present on the solenoid control line from an external source, preventing the module from properly controlling the valve. Traction control is disa...
The most common cause of C1413 (Traction Control Valve LF Circuit Short To Battery) is: Harness damage allowing contact between solenoid wires and power supply wires
Typical repair costs for C1413 range from $100 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
LF traction control is disabled. The short-to-battery may keep the solenoid energized, potentially causing left front brake drag. Monitor for pulling to the left, unusual brake heat, or premature pad wear. Have the system repaired promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1413 to identify the root cause.
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Quick Info
Category
Chassis
System
ABS / Traction Control
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
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