C1205
ABS Outlet Valve Coil Rear Circuit Short To Ground
Chassis Chassis/Safety ABS System 🔴 Serious — Stop or limit driving
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What This Actually Means
In plain language — no jargon

The ABS system's rear outlet valve coil has shorted to ground, meaning electricity is taking an unintended path instead of flowing through the valve properly. Think of it like water leaking out of a hose instead of spraying from the nozzle.

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Symptoms You May Notice
3 known symptoms for this code
ABS warning light illuminated on dashboard
Reduced or no ABS functionality during braking
Vehicle may pull to one side during heavy braking
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Embedded Systems Insight
What the ECU/ECM is actually computing

The ABS module monitors the resistance and current draw of the rear outlet valve solenoid coil. When a short to ground occurs, resistance drops significantly and current exceeds safe operating thresholds. The module detects this anomaly within milliseconds and sets the fault code.

Voltage & Parameter Thresholds

Parameter Normal Range Fault Condition
Coil Resistance 4-8 ohms < 2 ohms or near 0 ohms
Circuit Current 0.5-2.0 amps > 3 amps (short condition)
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
Wiring harness connector
Inspect the rear outlet valve connector for corrosion, moisture, or damaged pins and reseat firmly.
2
ABS wiring harness
Check the wiring from ABS module to rear valve for cuts, abrasions, or pinches that expose the conductor.
3
Rear outlet valve solenoid assembly
Replace the solenoid coil if wiring is intact, as internal coil insulation has likely failed.