C1247
ABS Outlet Valve Coil RR Circuit Open
Chassis Chassis/Safety ABS Hydraulic Control 🔴 Serious — Stop or limit driving
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What This Actually Means
In plain language — no jargon

The ABS system's rear-right outlet valve coil has an electrical break in its circuit, like a light switch that won't turn on. The ABS module can't signal the valve to release brake pressure during anti-lock braking.

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Symptoms You May Notice
3 known symptoms for this code
ABS warning light illuminated on dashboard
Loss of ABS function; brakes may lock up during emergency stops
Possible extended stopping distance or wheel skidding on slippery surfaces
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Embedded Systems Insight
What the ECU/ECM is actually computing

The ABS module continuously monitors coil resistance and circuit continuity for the rear-right outlet valve solenoid. During operation, it expects to detect a complete circuit with measurable coil resistance. An open circuit breaks current flow entirely, preventing valve activation.

Voltage & Parameter Thresholds

Parameter Normal Range Fault Condition
RR Outlet Valve Coil Resistance 4–12 ohms Infinite ohms (open circuit)
Coil Circuit Current Draw 0.5–1.5 amps when energized No current detected
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
RR outlet valve solenoid coil connector
Inspect and reseat the connector at the ABS module; dirt or corrosion may block continuity.
2
ABS wiring harness (RR outlet valve circuit)
Check for damaged, pinched, or corroded wiring between the ABS module and rear-right wheel; repair or replace as needed.
3
RR outlet valve solenoid assembly
If connector and wiring are intact, replace the solenoid coil or entire valve unit.